cad analysis lab manual 2015 s6 mechanical

ST.THOMAS INSTITUTE FOR

SCIENCE AND TECHNOLOGY

(STIST) THIRUVANANTHAPURAM

DEPARTMENT OF MECHANICAL ENGINEERING

CAD ANALYSIS LAB LABORATORY MANUAL

2015

DEPARTMENT OF MECHANICAL ENGINEERING

ST.THOMAS INSTITUTE FOR SCIENCE AND TECHNOLOGY THIRUVANANTHAPURAM

08.607 CAD ANALYSIS LAB

LABORATORY MANUAL

2015

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CONTENTS

Title Page No.

Introduction to Solid Edge 1

PART 1: PART MODELING 6

Exercise 1 7

Exercise 2 7

Exercise 3 8

PART 2: ASSEMBLY MODELING 9

Exercise 4 10

Exercise 5 11

Exercise 6 12

Exercise 7 13

Exercise 8 14

Exercise 9 15

Exercise 10 16

Introduction to Femap 17

PART 3: ANALYSIS 20

Exercise 11 21

Exercise 12 21

Exercise 13 22

Exercise 14 22

Exercise 15 23

Exercise 16 23

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CAD Analysis Lab Manual S6 Mechanical DEPT OF MECHANICAL - STIST

INTRODUCTION TO SOLID EDGE

Solid Edge, a product of Siemens, is one of the world’s fastest growing solid modeling software. Solid Edge with Synchronous Technology combines the speed and flexibility of direct modeling with precise control of dimension-driven through precision sketching, region selection, face selection, and handle selection. Solid Edge ST4 integrates the synchronous modeling with the traditional modeling into a single environment. It is an integrated solid modeling tool, which not only unites the synchronous modeling with traditional modeling but also address every design-through-manufacturing process.

In Solid Edge, the 2D drawing views can be easily generated in the drafting environment after creating solid models and assemblies. The drawing views that can be generated include orthographic views, isometric views, auxiliary views, section views, detail views and so on. The user can use any predefined drawing standard file for generating the drawing views. The user can display model dimensions in the drawing views or add reference dimensions whenever he wants. The bidirectional associative nature of this software ensures that any modifications made in the model is automatically reflected in the drawing views.

To make the design process simple and efficient, the software package divides the steps of designing into different environments. This means, each step of the design process is completed in a different environment. Generally, a design process involves the following steps:

Sketching by using the basic sketch entities and converting them into features or parts. These parts can be sheet metal parts, surface parts or solid parts.

Assembling different parts and analyzing them

Generating drawing views of the parts and the assembly.

Solid Edge supports data migration from various CAD packages such as IDEAS, AutoCAD, Mechanical Desktop, Pro/E, Inventor, CATIA, and NX documents. As a result, all files and documents created in these software into a Solid Edge document.

Solid Edge Environments

To reduce the complications of a design, this software package provides you with various design environments.

a. Part Environment

This environment is used to create solid as well as surface models. The part environment consists of two environments namely Synchronous Part and Ordered Part. Synchronous is the default environment in ST4. In this environment, there is no separate environment to draw sketches; rather the sketching tools are available in the Synchronous Part environment itself.

b. Assembly Environment

This environment is used to create an assembly by assembling the components that were created in the Part environment. This environment supports animation, rendering, piping, and wiring.

c. Draft Environment

This environment is used for the documentation of the parts or the assemblies in the form of drawing views. The drawing views can be generated or created. All the dimensions added to

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the component in the part environment during its creation can be displayed in the drawing views in this environment.

d. Sheet Metal Environment

This environment is used to create sheet metal components.

e. Weldment Environment

This environment enables you to insert components from the part or the assembly environment and apply weld beads to the parts or the assembly. This environment is associative with the part and assembly environment.

User Interface of Solid Edge

Prompt Line: If the user invoke a tool, the prompt line is displayed below the command bar. This line is very useful while creating a model, because it provides the user with the prompt sequences to use a tool.

PathFinder: The PathFinder is present on the left of the drawing area. It lists all occurences of features and sketches of a model in a chronicle sequences.

Docking Window: The docking window is available on the left of the screen and remains collapsed by default. It has different tabs on the top. These tabs can be used to activate the feature library, family of parts etc.

Ribbon: The Ribbon is available at the top of the solid edge window and contains all application tools. It is a collection of tabs. Each tab has different groups and each group is a collection of similar tools.

Quick Access toolbar: It is available on the top-left of the title bar of the solid edge window. It proves an access to the frequently used commands such as New, Open, Undo, Redo, Save and Print.

Application Button: It is available on the top left corner of the solid edge window. It is present in all environments. On choosing this button, the Application menu containing the options for creating, opening, saving, and managing documents will be displayed.

Status Bar: It is available at the bottom of the solid edge window. It enables the user to quickly access all the view controls like Zoom Area, Zoom, Fit, Pan, Rotate, Sketch View, View Orientation, and View styles.

QuickBar: It provides the command options for the active tool.

Assembly Environment Tabs: There are several tabs in the Ribbon that can be invoked in the part environment.

i. Homeii. Features iii. PMI iv. Simulation v. Simulation Geometry

vi. Inspect vii. Tools viii. View

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Assembly Relationships

The assembly relationships are the logical operations that are performed on the component to assemble at their respective work in position in an assembly this relationship played to reduce the degrees of freedom of the components

Mate: This relationship is used to make the selected face of the different components coplanar. You can also specify some offset distance between the selected faces.

Planar Align: This relationship enables you to align a planar face with the other planar face.

Axial Align: This relationship enables you to make a cylindrical surface coaxial with the other cylindrical surface.

Insert: This relationship is used to mate the phases of two components that are actually symmetric and also to mate their axes coaxial.

Connect: This relationship enables you to connect two keypoints, line, or a face on two different parts.

Angle: This relationship is used to place the selected faces of different components at some angle with respect to each other.

Tangent: This relationship is used to make the selected face of a component tangent to the cylindrical, circular or conical faces of the other component.

Cam: This relationship applies the cam-follower relationship between a closed loop of tangent face and the follower face.

Parallel: The parallel relationship is used to force two edges, axes or an edge and an axis parallel to each other.

Gear: The gear a relationship allows you to apply rotation-rotation, rotation-linear, or a linear-linear relationship between two components.

Application Button

Quick Access toolbar Groups Ribbon

Base Coordinate System

PathFinder

View Orientation Triad

Status bar

Docking Window

Solid Edge ST4 Assembly environment

Quick Bar

Assembly Relationships

Tabs in Assembly Environment

PART 1: PART MODELING


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Exercise 1

Exercise 2

Φ19


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Exercise 3

PART 2: ASSEMBLY MODELING


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Exercise 4: FLANGED COUPLING (Protected Type)


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Exercise 5: UNIVERSAL COUPLING (Hook’s Joint)


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Exercise 6: SOCKET AND SPIGOT JOINT (Cotter Joint)


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Exercise 7: SLEEVE AND COTTER JOINT (Cotter Joint with Sleeve)


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Exercise 8: GIB AND COTTER JOINT (Strap Joint with Gib and Cotter)


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Exercise 9: CROSS HEAD (Horizontal Type)


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Exercise 10: KNUCKLE JOINT (Pin Joint)


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INTRODUCTION TO FEMAP

Femap (Finite Element Modeling And Postprocessing) is an engineering analysis program sold

by Siemens PLM Software that is used to build finite element models of complex engineering

problems ("pre-processing") and view solution results ("post-processing"). It runs

on Microsoft Windows and provides CAD import, modeling and meshing tools to create a

finite element model, as well as postprocessing functionality that allows mechanical

engineers to interpret analysis results. The finite element method allows engineers to virtually

model components, assemblies, or systems to determine behavior under a given set of

boundary conditions, and is typically used in the design process to reduce costly prototyping

and testing, evaluate differing designs and materials, and for structural optimization to reduce

weight.

Product simulation applications include basic strength analysis, frequency and transient

dynamic simulation, system-level performance evaluation and advanced response, fluid flow

and multi-physics engineering analysis for simulation of functional performance.

Femap is used by engineering organizations and consultants to model complex products,

systems and processes including satellites, aircraft, defense electronics, heavy construction

equipment, lift cranes, marine vessels and process equipment.

Features of FEMAP

CAD-Independent

Femap is CAD-independent and can access geometry data from all major CAD systems

including CATIA, Pro/Engineer, NX, Solid Edge, SolidWorks and AutoCAD. Once imported you

can prepare the model for analysis using the geometry locator to identify and display

potentially troublesome entities, such as slivers, and either remove them completely with the

geometry cleanup tools or suppress them. Femap also offers a wealth of geometry creation

and modification functions so you can make necessary model changes in preparation for finite

element model creation.

Finite Element Modeling

The full finite element model with underlying data is fully exposed by Femap, allowing you to

view, create or modify entities directly. Femap’s grouping, layering and visualization tools

help you to manage model display while creating and setting up the finite element model.

Femap includes specialized capabilities to help with modeling tasks including:

Mid-plane extraction of thin-walled structures to aid creation of more efficient and

accurate shell models

Weldment modeling that connects discrete solid welded parts together into a

contiguous model

Data surfaces that allow you to create complex loading conditions based on prior

analysis output for multi-physics applications

http://en.wikipedia.org/wiki/Engineering

http://en.wikipedia.org/wiki/Siemens_PLM_Software

http://en.wikipedia.org/wiki/Finite_element

http://en.wikipedia.org/wiki/Microsoft

http://en.wikipedia.org/wiki/Microsoft_Windows

http://en.wikipedia.org/wiki/Computer-aided_design


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Finite Element Meshing

Femap’s 3D solid and surface meshes are tuned to generate high-quality meshes, providing

well-shaped elements to ensure accurate results. Femap gives you full control over all mesh

generation parameters including mesh sizing, meshing of small features, growth factors, short

edge suppression, etc. With complex geometry, modification of the mesh is often required in

areas where greater accuracy is desired. For this situation Femap’s Meshing Toolbox allows

you to interactively modify mesh sizing parameters on the underlying geometry, and see the

mesh update automatically. You can also view element quality feedback live while modifying

the mesh, to ensure that a high-quality finite element model is created.

Assembly Modeling

Femap with NX Nastran supports assembly modeling, including automatic contact detection

that determines the components initially in contact. The contact regions can be set to be

simply in contact (with or without friction) or glued together. The contact calculations

performed by NX Nastran are iterative and update during the solution, to take into account

deformation changes representing the true contact condition in the final results.

Other types of component assembly modeling techniques also supported include spot-weld,

fastener elements, and bolted joints with optional pre-loading.

Beam Modeling

Besides solid and shell element models Femap also supports beam modeling and meshing.

This technique allows models comprising long, slender components (for which a solid meshing

approach would create a large, unwieldy model) to be represented by one-dimensional

elements with associated properties.

Model visualization is key to beam modeling, and with Femap you can view these elements

as solid components and include offsets. Femap features a section property editor which

includes a library of standard cross-section shapes. You can also define your own sections,

and the built-in section property calculator automatically determines the required properties.

Also available are full beam visualization and results display options including shear and

bending moment diagrams.

Composite Modeling

The use of composite materials in designs has increased significantly in recent years, and

Femap can help you model and postprocess results on composite structures. With Femap’s a

laminate editor and viewer, you can update the laminate properties interactively as you

create and modify plies in the laminate.

You can also postprocess composite laminate results using Femap’s global composite ply

feature, which allows you to view results on continuous plies through the structural model.

Solver Neutral

Femap is solver-neutral and provides in-depth pre- and postprocessing support for all of the

main commercial solvers on the market, including NX Nastran, Ansys, LS-DYNA, Abaqus and

TMG. You can take full advantage of the advanced analysis capabilities of these solvers using


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Femap’s comprehensive modeling and analysis support, particularly for dynamic, geometric

and material nonlinear, heat transfer and fluid flow analyses.

Postprocessing

A wealth of visualization capabilities help you view and interpret the results to quickly

understand the model behavior. You’ll find everything you need to view and interpret the

output data, including:

Contour and criteria plots

Deformed shape animations

Dynamic cutting plane and iso-surfaces

Full output selection

XY plots

Free body diagrams and grid point force balance output

Time and frequency domain animations

Complete access to results data is provided through the Data Table pane, which you can use

to gather, sort and control the amount and type of data that is visible, to compile an analysis

report.

Scalable Simulation Solutions

The Velocity Series CAE products offer scalable solutions for design engineers in the form of

the CAD-embedded Solid Edge Simulation program, and Femap with NX Nastran for CAE

analysts.

The Femap with NX Nastran product line itself offers solution scalability, from the more

general simulation capabilities available in the base module to more advanced applications

including dynamics, optimization, advanced nonlinear, rotor dynamics, heat transfer and fluid

flow in add-on modules.

Customization

Femap’s open customization capability allows complete access to all Femap functions through

an OLE/COM object-oriented Application Programming Interface (API), which employs

standard, non-proprietary programming languages. Access to the API is through a

development environment within the user interface where you can create custom programs

that automate workflows and processes, and which can interact and exchange data with

third-party programs such as Microsoft Word and Excel.

Usability

Femap is an intuitive Windows-native application. Femap’s support of multiple graphics

windows and specialized panes, such as the Model Info Tree and Data Table, allow complete

access to the finite element model and results data and help promote efficient work flows.

You can modify the appearance of the interface to suit your requirements, including

repositioning panes, modifying the level of functionality exposed, and complete toolbar and

icon customization.

PART 3: ANALYSIS


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Exercise 11: Find out the total axial deflection and reaction force at the fixed end of an axial

member of cross section 100x100mm and 1000mm long subjected to an axial

load of 1000N at the free end. The axial member is made of 4340 steel.

Exercise 12: Find the maximum deflection of a cantilever beam having a length of 1m and

cross section of 200 x 100 mm (where, 200mm is height). The load applied is 10

kN. E = 210 GPa.


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Exercise 13: Find maximum deflection of a simply supported beam having a length of 1m and

cross section of 200 x 100 mm and 200mm is mean height. A centralized load of

10kN is applied. E= 210 GPa for steel.

Exercise 14: Find the deflection of each joint and reaction forces at the fixed ends under

loading as shown in fig. Cross sectional area is 5000mm2, E= 13GPa.


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Exercise 15: Determine the nodal deflection, reaction forces and maximum stress acting on

a truss as in figure. E=200Gpa, A=3500 mm 2.

Exercise 16: Determine the nodal deflection, reaction forces and maximum stress acting on

a truss as shown in the figure. E = 200 Gpa, A = 3500 mm2.

cad analysis lab manual 2015 s6 mechanical

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