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Static Structural Analysis

Chapter Four


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Linear Static Structural Analysis

Chapter Overview

In this chapter, performing linear static structural analysesin Simulation will be covered:

Geometry and Elements

Contact and ypes of Supported Assemblies

Environment, including !oads and Supports

Solving "odels

#esults and $ostprocessing

he capabilities described in this section are generally

applicable toANSYS DesignSpace Entralicenses and above% Some options discussed in this chapter may re&uire more

advanced licenses, but these are noted accordingly%

Free vibration, harmonic, and nonlinear structural analyses are

not discussed here but in their respective chapters%


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Basics of Linear Static Analysis

For a linear static structural analysis, the displacements '() are

solved for in the matri( e&uation below:

his results in certain assumptions related to the analysis:

*+ is essentially constant !inear elastic material behavior is assumed

Small deflection theory is used

Some nonlinear boundary conditions may be included

'F) is statically applied

-o time.varying forces are considered

-o inertial effects /mass, damping0 are included

It is important to remember these assumptions related to linear

staticanalysis% Nonlinear staticand dynamicanalyses are

covered in later chapters%

[ ]{ } { }FxK =


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A !eometry

In structural analyses, all types of bodies supported bySimulation may be used%

For surface "odies, thic1ness must be

supplied in the 23etails4 view of the2Geometry4 branch%

he cross.section and orientation of line "odiesare defined

within 3esign"odeler and are imported into Simulationautomatically%

For line bodies, only displacement results are available%

ANSYS License Availability

3esignSpace Entra x

3esignSpace x

$rofessional x

Structural x

"echanical5"ultiphysics x


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# $oint %ass

A $oint "ass is available under the Geometry branch tomimic weight not e(plicitly modeled

A point mass is associated with surface/s0 only

he location can be defined by either:

/(, y, 60 coordinates in any user.defined Coordinate System

Selecting vertices5edges5surfaces to define location he weight5mass is supplied under 2"agnitude4

In a structural static analysis, the point mass is affected by

2Acceleration,4 2Standard Earth Gravity,4 and 2#otational

7elocity4% -o other loads affect a point mass%

he mass is 8connected9 to selected surfacesassuming no stiffnessbetween them% his is

nota rigid&regionassumption but similar to a

distri"uted massassumption%

-o rotational inertial terms are present%ANSYS License Availability

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# $oint %ass

A point mass will be displayed as a round, grey sphere As noted previously, only inertial loads affect the point mass%

his means that the only reason to use a point mass in a linear

static analysis is to account for additional weight of a

structure not modeled% Inertial loads must be present%

-o results are obtained for the $oint "ass itself%


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# %aterial $roperties

he re&uired structural material properties are Young's%odulusand $oisson's (atiofor linear static structural

analyses

"aterial input is under the 2Engineering 3ata4 branch, and

material assignment is per part under the 2Geometry4 branch

%ass densityis re&uired if any inertial loads are present )hermal e*pansion coefficientand thermal conductivityare

re&uired if any thermal loads are present

hermal loading not available with anANSYS Structurallicense

-egative thermal e(pansion coefficient may be input /shrin1age0

Stress Limitsare needed if a Stress ool result is present +atigue $ropertiesare needed if Fatigue ool result is present

#e&uires +atigue %oduleadd.on license

Specific loading and result tools will be discussed later


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B Assem"lies , Solid Body Contact

hen importing assemblies of solid parts, contact regionsare automatically created between the solid bodies%

Surface.to.surface contact allows non.matching meshes at

boundaries between solid parts

olerance controls under 2Contact4 branch allows the user to

specify distance of auto contact detection via slider bar


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# Assem"lies , Solid Body Contact

In Simulation, the concept of contact and targetsurfacesare used for each contact region%

;ne side of the contact region is comprised of 2contact4

face/s0, the other side of the region is made of 2target4 face/s0%

he integration points of the contact surfaces are restricted

from penetrating through the target surfaces /within a given

tolerance0% he opposite is not true, however%

hen one side is the contact and the other side is the target, this is

called asymmetric contact% ;n the other hand, if both sides are

made to be contact < target, this is called symmetric contactsince

neither side can penetrate the other%

=y default, Simulation uses symmetriccontactfor solid assemblies%

ForANSYS $rofessional licenses and

above, the user may change to

asymmetric contact, as desired%


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Four contact types are available:

Bondedand No Separationcontact are basically

linear behavior and re&uire only > iteration

+rictionlessand (oughcontact are nonlinear

and re&uire multiple iterations% -owever. note

that small deflection theory is still assumed

hen using these options, an interface treatment

option is available, set either as 2Actual Geometry/and Specified ;ffset04 or 2Ad?usted to ouch%4

he latter allows the user to have A-S@S close the

gap to 8?ust touching9 position% his is available

forANSYS $rofessionaland above%

Contact Type Iterations Normal Behavior (Separation Tan!ential Behavior (Sli"in!

=onded # Close" Close"

-o Separation # Close" $pen

Frictionless %&ltiple $pen $pen

#ough %&ltiple $pen Close"


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For the advanced user, some of thecontact options can be modified

Formulation can be changed from 2$ure

$enalty4 to 2Augmented !agrange,4 2"$C,4 or

2-ormal !agrange%4

2"$C4 is applicable to bonded contact only

2Augmented !agrange4 is used in regular A-S@S

he pure $enalty method can be thought of as

adding very high stiffnessbetween interface of

parts, resulting in negligible relative movement

between parts at the contact interface%

"$C formulation writes constraint e/uations

relating movement of parts at interface, so norelative movement occurs% )his can "e an

attractive alternative to penalty method for

"onded contact


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Advanced options /continued0: As e(plained in Chapter , the pinball

region can be input and visuali6ed

he pinball region defines location of near&

field open contact% ;utside of the pinball

region is far&field open contact%

;riginally, the pinball region was meant tomore efficiently process contact searching,

but this is also used for other purposes,

such as bonded contact

+or "onded or no separation contact. if gap

or penetration is smaller than pin"all region.

the gap0penetration is automaticallye*cluded

;ther advanced contact options will be

discussed in Chapter >>%In this case, the gap between

the two parts is bigger than the

pinball region, so no automatic

gap closure will be performed%


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# Assem"lies , Surface Body Contact

ForANSYS $rofessionallicenses and above, mi(edassemblies of shells and solids are supported

Allows for more comple( modeling of assemblies, ta1ing

advantage of the benefits of shells, when applicable

"ore contact options are e(posed to the user

Contact postprocessing is also available /discussed later0


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# Assem"lies , Surface Body Contact

Edge contact is a subset of general contact For contact including shell faces or solid

edges, only bonded or no separation

behavior is allowed%

For contact involving shell edges, only

bonded behavior using "$C formulation is

allowed%

For "$C.based bonded contact, user can set

the search direction /the way in which the multi.

point constraints are written0 as either

the target normalorpin"all region%

If a gap e(ists /as is often the case with

shell assemblies0, thepin"all regioncan be

used for the search direction to detect

contact beyond a gap%


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# Assem"lies , Contact Summary

A summary of contact types and options available inSimulation is presented in the table below:

his table is also in the Simulation online help% $lease refer to

this table to determine what options are available%

-ote that surface body faces can only participate in bonded or no

separation contact% Surface body edges allow "$C.based bonded

contact only%

Contact 'eometry Solid =ody Face Solid =ody Edge Surface =ody Face Surface =ody Edge

All ty pes Bon"e" No Separation Bon"e" No Separation Bon"e" only

All )orm&lations All )orm&lations All )orm&lations %*C )orm&lation

Symmetry res pecte" Asymmetric only Symmetry respec te" Asymmetric only

Bon"e" No Separation Bon"e" No Separation Bon"e" only

All )orm&lations All )orm&lations %*C )orm&lation

Asymmetric only Asymmetric only Asymmetric onlyBon"e" No Separation Bon"e" only

All )orm&lations %*C )orm&lation

Symmetry respecte" Asymmetric only

Bon"e" only

%*C )orm&lation

Asymmetric only

Solid =ody Face

Solid =ody Edge

Surface =ody Face

Surface =ody Edge


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# Assem"lies , Spot 1eld

Spot welds provide a means of connecting shell

assemblies at discrete points

ForANSYS DesignSpacelicenses, shell contact is not

supported, so spotwelds are the only way to define a shell

assembly%

Spotweld definition is done in the CA3 software% Currently,

only 3esign"odeler and Bnigraphics define spotwelds in a

manner that Simulation supports%

Spotwelds can also be created in

Simulation manually, but only at

discrete vertices%

ANSYS License Availability3esignSpace Entra

3esignSpace x

$rofessional x

Structural x


3esign"odeler x

$ro5E-GI-EE#

Bnigraphics x

Solid:or1s

Inventor

Solid Edge

"echanical 3es1top

CAIA 7

CAIA 7D

ACIS /SA0$arasolid

IGES


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C Loads and Supports

here are four types of structural loads available:

Inertial loads

hese loads act on the entire system

3ensity is re&uired for mass calculations

hese are only loads which act on defined $oint "asses

Structural !oads hese are forces or moments acting on parts of the system

Structural Supports

hese are constraints that prevent movement on certain regions

hermal !oads

Structurally spea1ing, the thermal loads result in a temperaturefield, which causes thermal e(pansion on the model%


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)ime )ype

A time type option is available at certain license levels%

he default time type for loading is 2static4

2Se&uence4 and 2harmonic4 time types are available as

options /harmonic analysis is covered in the Advanced =

training0

Se&uence loading allows a series of static time steps to be

set up in advance and solved at once

Se&uenced results can be reviewed step by step


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)ime )ype

Specify the desired number of se&uence

steps in the details of the Environment%

Enter the value of the load for each step by

first highlighting the desired step in the

graphics window%

he chart in the graphics window displays thevariation of the load%


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)ime )ype

he wor1sheet view provides a

graphical representation of each

load9s se&uence%

#esults of a se&uenced simulation

can be reviewed by highlighting the

&uantity of interest and pic1ing the

desired se&uence from the graphics

window%


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# Acceleration 2 !ravity

An acceleration can be defined on the system

Acceleration acts on entire model in length5timeEunits%

Bsers sometimes have confusion over notation of direction% If

acceleration is applied to system suddenly, the inertia resists

the change in acceleration, so the inertial forces are in the

oppositedirection to applied acceleration

Acceleration can be defined by Components or 7ector

Standard Earth Gravity can also be applied as a load

7alue applied is %HD m5sE/in SI units0

Standard Earth Gravity direction can only be defined along

one of three orld Coordinate System a(es%

Since 2Standard Earth Gravity4 is defined as an acceleration,

define the direction as opposite to gravitational force, as noted

above%ANSYS License Availability

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# (otational 3elocity

#otational velocity is another inertial load available

Entire model spins about an a(is at a given rate

Can be defined as a vector, using geometry for a(is and

magnitude of rotational velocity

Can be defined by components, supplying origin and

components in orld Coordinate System -ote that location of a(is is very important since model spins

around that a(is%

3efault is to input rotational velocity in radians per second%

Can be changed in 2ools J Control $anel J "iscellaneous J

Angular 7elocity4 to revolutions per minute /#$"0 instead%


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# +orces and $ressures

$ressure loading:

$ressures can only be applied to surfaces and always act

normal to the surface

$ositive value acts into surface /i%e%, compressive0

negative value acts outward from surface /i%e%, suction0

Bnits of pressure are in force per area

Force loading:

Forces can be applied on vertices, edges, or surfaces%

he force will be distri"uted on all entities% his

means that if a force is applied to two identical

surfaces, each surface will have half of the forceapplied% Bnits are massKlength5timeE

A force is defined via vector and magnitude or by

components /in user.defined Coordinate System0ANSYS License Availability

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# Bearing Load

=earing !oad /was called 2=olt !oad4 in prior releases0:

=earing !oads are for cylindrical surfaces only% #adial

component will be distributed on compressive side using

pro?ected area% E(ample of radial distribution shown below%

A(ial component is distributed evenly on cylinder%

Bse only one bearing load per cylindrical surface% If the

cylindrical surface is split in two, however, be sure to selectboth halves of cylindrical surface when applying this load%

!oad is in units of force

=earing load can be defined

via vector and magnitude or

by components /in anyuser Coordinate System0%


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# %oment Load

"oment !oad:

For solid bodies, a moment can be applied on any

surface

If multiple surfaces are selected, the moment load

gets apportioned about those selected surfaces

A vector and magnitude or components /in user.definedCoordinate System0 can define the moment% he moment acts

about the vector using the right.hand rule

For surface bodies, a moment can also be applied to a verte(

or edge with similar definition via vector or components as

with a surface.based moment

Bnits of moment are in ForceKlength%


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# (emote Load

#emote !oad:

Allows the user to apply an offset force on a surface or edge

of a surface body

he user supplies the origin of the force /using vertices, a

cylinder, or typing in /(, y, 60 coordinates0% A user.defined

Coordinate System may be used to reference the location%

he force can then be defined by vector and magnitude or by

components /components for direction is in Global CS0

his results in an e&uivalent force on

the surface plus a moment caused by

the moment arm of the offset force

he force is distributed on the surface

but includes the effect of the moment

arm due to the offset of the force

Bnits are in force /massKlength5timeE0ANSYS License Availability

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# Supports 4!eneral5

Fi(ed Support:

Constraints all degrees of freedom on verte(, edge, or surface

For solid bodies, prevents translations in (, y, and 6

For surface and line bodies, prevents translations and

rotations in (, y, and 6

Given 3isplacement:

Applies 1nown displacement on verte(, edge, or surface

Allows for imposed translational displacement in (, y, and 6 /in

user.defined Coordinate System0

Entering 2H4 means that the direction is constrained

!eaving the direction blan1 means that the entity is free to

move in that direction


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# Supports 4Solid Bodies5

Frictionless Support:

Applies constraint in normal direction on surfaces

For solid bodies, this support can be used to apply a

8symmetry9 plane boundary condition since 8symmetry9 plane

is same as normal constraint

Cylindrical Constraint: Applied on cylindrical surfaces

Bser can specify whether a(ial, radial, or tangential

components are constrained

Suitable for small.deflection /linear0 analysis only


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# Supports 4Solid Bodies5

Compression ;nly Support:

Applies a compression.only constraint normal to any given

surface% )his prevents the surface to move in the positive

normal direction only%

A way to thin1 of this support is to imagine a 8rigid9 structure

which has the same shape of the selected surface% Note that

the contacting 4compressive5 areas are not 6nown "eforehand

Can be used on a cylindrical surface to model a

/referred to as 2$inned Cylinder4 L%>0

-otice the e(ample on the right,

where the outline of the undeformed cylinder

is shown% he compressive side retains the shapeof the original cylinder, but the tensile side is free to deform%

)his re/uires an iterative 4nonlinear5 solution


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# Supports 4Line0Surface Bodies5

Simply Supported:

Can be applied on edge or verte( of surface or line bodies

$revents all translations but all rotations are free

Fi(ed #otation:

Can be applied on surface, edge, or verte( of surface or line

bodies

Constrains rotations but translations are free


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# Summary of Supports

Supportsand Contact(egionsmay both be thought of as being

"oundary conditions%

Contact (egionsprovides a 8fle(ible9 boundary condition between

two e(isting parts e(plicitly modeled

Supportsprovide a 8rigid9 boundary condition between the modeled

part an a rigid, immovable part not e(plicitly modeled

If $art A, which is of interest, is connected to $art =, consider

whether both parts need to be analy6ed /with contact0 or

whether supports will suffice in providing the effect $art = hason $art A%

In other words, is $art = 8rigid9 compared to $art AM If so, a support

can be used and only $art A modeled% If not, one may need to

model both $arts A and = with contact%

Type o) S&pport +0&ivalent Contact Con"ition at S&r)aces o) *art

Fi(ed Support Bonded contact1ith a ri!i"( immovable part

Frictionless Support No Separation contact1ith a ri!i"( immovable part

Compression ;nly Support Frictionless contact1ith a ri!i"( immovable part


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# )hermal Loading

emperature causes thermal e(pansion in the model

hermal strains are calculated as follows:

where is the thermal e(pansion coefficient /CE0, )refis the

reference temperature at which thermal strains are 6ero, )is

the applied temperature, and this the thermal strain% hermal strains do not cause stress by themselves% It is the

constraint, temperature gradient, or CE mismatch that

produce stress%

CE is defined in 2Engineering 3ata4

and has units of strain per temperature he reference temperature is defined in the

2Environment4 branch

( )refz

th

y

th

x

th TT===


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# )hermal Loading

hermal loads can be applied on the model

Any temperature loading can be applied /see Chapter on

hermal Analysis for details0

Simulation will always perform a thermal solution first, then

use the calculated temperature field as input when solving the

structural solution%


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or1shop %> N !inear Structural Analysis

Goal:

A D part assembly representing an impeller type pump is

analy6ed with a >HH- preload on the belt%

D 1or6shop 78
http://workshops/AWS90_Workshop_04-1.ppthttp://workshops/AWS90_Workshop_04-1.ppt


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E Solution Options

Solution options can be set under the 2Solution4 branch

he A-S@S database can be saved if 2Save

A-S@S db4 is set

Bseful if you want to open a database in A-S@S

wo solvers are available in Simulation

he solver is automatically chosen, although some

informative messages may appear after solution

letting the user 1now what solver was used% Set

default behavior under 2ools J ;ptions O J

Simulation: Solution J Solver ype4

he 23irect4 solver is useful for models containing

thin surface and line bodies% It is a robust solver

and handles any situation%

he 2Iterative4 solver is most efficient when solving

large, bul1y solid bodies% It can handle large models

well, although it is less efficient for beam5shells%


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# Solution Options

ea1 springs can be added to stabili6e model

If 2$rogram Controlled4 is set, Simulation tries to

anticipate under.constrained models% If no

2Fi(ed Support4 is present, it may add wea1 springs

and provide an informative message letting the user

1now that it has done so

his can be set to 2;n4 or 2;ff4% o set the default

behavior, go to 2ools J ;ptions O J Simulation:Solution J Bse ea1 Springs4%

In some cases, the user e(pects the model to be in

e&uilibrium and does not want to constrain all

possible rigid.body modes% ea1 springs will help

by preventing matri( singularity%

It is good practice to constrain all possible rigid.body

motion, however%


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# Solution Options

Informative messages are also present:

he type of analysis is shown, such as 2Static

Structural4 for the cases described in this section%

If a nonlinear solution is re&uired, it will be indicated

as such% #ecall that for some contact behavior and

compression.only support, the solution becomes

nonlinear% hese type of solutions re&uire multiple

iterations and ta1e longer than linear solutions%

he solver wor1ing directory is where scratch files are

saved during the solution of the matri( e&uation% =y

default, the E"$ directory of your indows system

environment variable is used, although this can be

changed in 2ools J ;ptions O J Simulation: Solution

J Solver or1ing 3irectory4% Sufficient free spacemust be on that partition%

Any solver messages which appear after solution can

be chec1ed afterwards under 2Solver "essages4


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+ (esults and $ostprocessing

7arious results are available for postprocessing:

3irectional and total deformation

Components, principal, or invariants of stresses and strains

Contact output

#e&uires A-S@S $rofessional and above

#eaction forces

In Simulation, results are usually re&uested "eforesolving,

but they can be re&uested afterwards, too%

If you solve a model then re&uest results afterwards, clic1 onthe 2Solve4 button , and the results will be retrieved% A

new solution is not re&uired if that type of result has "een

re/uested previously/i%e%, total deformation was re&uested

previously but now direction deformation is added0%


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# $lotting (esults

All of the contour and vector plots are usually shown on

the deformed geometry% Bse the Conte(t oolbar to change

the scaling or display of results to desired settings%


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# Deformation

he deformation of the model can be plotted:

otal deformation is a scalar &uantity:

he (, y, and 6 components of deformation can be

re&uested under 23irectional%4 =ecause there is

direction associated with the components, if a

2Coordinate System4 branch is present, users can

re&uest deformation in a given coordinate system%

For e(ample, it may be easier to interpret displacement for a

cylindrical geometry in a 8radial9 direction by using a cylindrical

coordinate system to display the result% 7ector plots of deformation are available%

#ecall that wireframe mode is the easiest

to view vector plots%

222

zyxtotal UUUU ++=


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# Deformation

3eformation results are available for line, surface, and solid

bodies

-ote that 2deformation results4 are associated with

translational 3;F only% #otations associated with the 3;F of

line and surface bodies are not directly viewable

=ecause deformation /displacements0 are 3;F which

Simulation solves for, the convergence behavior is well.behaved when using the Convergence tool

7ector deformation plots cannot use2Alert4 or 2Convergence4

tools because they are vector &uantities /(, y, 60 rather than a

uni&ue &uantity /( or y or 60% Bse Alert or Convergence tools

on 2otal4 or 23irectional4 &uantities instead% 2otal4 deformation is an invariant, so 2Coordinate Systems4

cannot be used on this result &uantity% Also, 27ector4

deformation is always shown in the world coordinate system%


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# Stresses and Strains

Stresses and strains can be viewed:

2Strains4 are actually elasticstrains

Stresses and /elastic0 strains are

tensors and have si( components

/(, y, 6, (y, y6, (60 while thermal

strains can be considered a vector

with three components /(, y, 60

For stresses and strains, components can be

re&uested under 2-ormal4 /(, y, 60 and 2Shear4

/(y, y6, (60% For thermal strains, /(, y, 60 components are under

2hermal%4

Can re&uest in different results coordinate systems hermal strains not available with an A-S@S Structural license

;nly available for shell and solid bodies% !ine bodies currently do

not report any results e(cept for deformation%

2E&uivalent $lastic4 strain output is covered in Chapter >>ANSYS License Availability

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# Stress )ools

Safety Factors can be calculated

based on any of failure theories:

3uctile heories:

"a(imum E&uivalent Stress

"a(imum Shear Stress

=rittle heories: "ohr.Coulomb Stress

"a(imum ensile Stress

ithin each stress tool safety factor,

safety margin and stress ratio can be

plotted

-ote: see appendi( and the

Simulation documentation for more

detailsANSYS License Availability

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Li S i S l A l i


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# Contact (esults

Contact #esults:

Contact results can be re&uested for selected

bodies or surfaces which have contact elements%

Contact elements in A-S@S use the concept of

contact and target surfaces% Only contact surfaces

report contact results "$C.based contact, the

target surfaces of any contact, and edge.based contact do notreport results% !ine bodies do not support contact%

If asymmetric or auto.asymmetric contact is used, then contact

results will be reported on the 8contact9 surfaces only% he 8target9

surfaces will report 6ero values, if re&uested%

If symmetric contact is used, then contact results will be reported

on both surfaces% For values such as contact pressure, the actual

contact pressure will be an average of both surfaces in contact%

Contact results are first re&uested via a 2Contact ool4 under

the Solution branch%ANSYS License Availability

3esignSpace Entra

3esignSpace

$rofessional x

Structural x


Li St ti St t l A l i


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# Contact (esults

he user can specify contact output under 2Contact ool4

he or1sheet view easily allows users to select which

contact regions will be associated with the 2Contact ool4

#esults on 8contact9 or 8target9 sides /or both0 can be selected

from the spreadsheet /symmetric vs% asymmetric contact0

Specific contact results chosen from Conte(t oolbar


3esignSpace Entra

3esignSpace

$rofessional x

Structural x


Select contact regions you want to

review /add more 2Contact ool4

branches to loo1 at contact region

output separately0%

#ight.clic1 on the wor1sheet to seeother available options%

For the 2Contact ool4, then

re&uest contact output results, and

those results will correspond to

selected contact regions%



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# Contact (esults

ypes of Contact #esults available:

Contact $ressureshows distribution of normal contact

pressure

Contact $enetrationshows the resulting amount of

penetration whereas contact !apshows any gap

/within pinball radius0%

Sliding Distanceis the amount one surface has slid with

respect to the other% +rictional Stressis tangential contact

traction due to frictional effects%

Contact Statusprovides information on

whether the contact is established /closed

state0 or not touching /open state0% For the open state, near.field means that it is

within pinball region, far.field means that it is

outside of pinball region%


3esignSpace Entra

3esignSpace

$rofessional x

Structural x


Contour results are plotted with the

rest of the model being translucent

for easier viewing%



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# Contact +orces

If 2#eactions4 are re&uested for 2Contact ool4, forces and

moments are reported for the re&uested contact regions

Bnder the 2or1sheet4 tab, contact forces for all re&uested

contact regions will be tabulated

Bnder the 2Geometry4 tab, symbols will show direction of

contact forces and moments%


3esignSpace Entra

3esignSpace

$rofessional x

Structural x




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# (eaction +orces at Supports

#eaction forces and moments are output for each support

For each support, loo1 under the 23etails4 view

after solution% #eaction forces and moments are

printed% P, y, and 6 components are with respect

to the world coordinate system% "oments are

reported at the centroid of the support%

he reaction force for wea1 springs, if used, isunder the 2Environment4 branch 3etails view

after solution% he wea1 spring reaction forces

should be small to ensure that the effect of wea1

springs is negligible%


3esignSpace Entra x

3esignSpace x

$rofessional x

Structural x


Linear Static Str ct ral Anal sis


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# (eaction +orces at Supports

he 2or1sheet4 tab for 2Environment4 branch has a

summary of reaction forces and moments

If a support shares a verte(, edge, or surface with another

support, contact pair, or load, the reported reaction forces may

be incorrect% his is due to the fact that the underlying mesh

will have multiple supports and5or loads applied to the same

nodes% he solution will still be valid, but the reported valuesmay not be accurate because of this%


3esignSpace Entra x

3esignSpace x

$rofessional x

Structural x




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# +atigue

If the Fatigue "odule add.on license is available, additional

post.processing involving fatigue calculations is possible

he 2Fatigue ool4 provides stress.based fatigue calculations

to aid the design engineer with evaluating the life of

components in the system

Constant or variable amplitude loading, proportional or non.

proportional loading is possible


Fatigue "odule x

3amage "atri( at Critical !ocation Contour of Safety Factor



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! 1or6shop 79 , 9D vs :D Analysis

or1shop % N Comparing 3 and 3 Structural Analysis

Comparing 3 and 3 structural analyses%

Shown here are the 3 sector model and the 3 a(isymmetric model%

$ressure Cap

#etaining #ing
http://workshops/AWS90_Workshop_04-2.ppthttp://workshops/AWS90_Workshop_04-2.ppt

ansys linear

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