altair - innovation intelligence · 2019. 6. 4. · a tire model suitable for rough roads free...
TRANSCRIPT
![Page 1: Altair - Innovation Intelligence · 2019. 6. 4. · A Tire Model Suitable For Rough Roads Free alternative to more complex and costly models Computes vertical & longitudinal forces](https://reader036.vdocument.in/reader036/viewer/2022071610/6148f4929241b00fbd673f60/html5/thumbnails/1.jpg)
MotionSolve 2019.0
Altair Korea
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MotionSolve
HyperWorks → MotionSolve SolidThinking → Inspire Motion
4: IMPROVE2: SOLVE 3: EVALUATE1: ASSEMBLE
Model Building Numerical Solution Post-Processing Optimization & DOE
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The MotionSolve Examples Library
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What We Will Discuss Today…
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SystemOptimization
Solutions
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a
a
Why
How
Who
Accelerate product innovation and improve product performance
Use the new optimization wizard to define and optimize your system
Engineers & analysts in all industries. Sweet spot – Mechanism optimization
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System Optimization In MotionSolve
The Problem
Find the design parameters that permit a system to
perform its intended functions in some optimal way
The Solution
A 5-step wizard in the user interface manages the
optimization problem definition and solution
A gradient-based optimizer (SLSQP) finds the
optimal solution
MotionSolve computes the sensitivities analytically
to provide a robust and fast solution
Identify Design
Variables
Create Responses
Define Objectives + Constraints
SolveDesign
Problem
Review &Accept Results
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#1: Minimize The Energy Consumption Of A Delta Robot
Time
Inst
anta
neous
Pow
er
Energy/cycle reduction = 30%
Given a work cycle, what is the design that minimizes the energy used by the Delta robot?
Total CPU Time = 60 seconds
Original Design
Optimized Design
Delta Robot
gripper
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#2: Design An SLA Suspension To Obtain Desired Ride Quality
Design variables (All Point Coordinates)
UCA Inboard hard-points (Fore/Aft) XYZ
LCA Inboard hard-points (Fore/Aft) XYZ
Upper Ball Joint hard-point XYZ
Lower Ball Joint hard-point XYZ
Tie rod Inner & Outer XYZ
Spindle Alignment Point Location XZ
26 Design Variables
Ride Steer @ Design = -4°/m
Ride Steer @ Full Jounce = -4°/m
Ride Camber @ Design = +5°/m
Ride Camber @ Full Jounce = +5°/m
Ride Caster @ Design = -8°/m
Ride Caster @ Full Jounce = -8°/m
6 Objectives
→ -4.1°/m
→ -4.0°/m
→ +4.9°/m
→ +5.0°/m
→ -8.4°/m
→ -7.6°/m
Results
Total CPU Time = 147 seconds
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The Optimization Wizard
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MotionSolve vs. HyperStudy – SLA Suspension Optimization
Kinematics Optimization through ride, roll and steer analyses
24 DVs and 6 Responses
Hard points HyperStudy MotionSolve
LCA front bush-left-x 930.03 930.11LCA front bush-left-y -396.83 -410.00LCA front bush-left-z 885.00 883.35LCA rear bush-left-x 1274.14 1266.70LCA rear bush-left-y -396.66 -410.00LCA rear bush-left-z 875.63 883.35UCA front bush-left-x 854.64 860.87… … …… … …Inner tie rod ball jt-left-y -396.25 -404.76Inner tie rod ball jt-left-z 905.17 906.07
Time used 92 mins 4.3 minsCost Reduction(%) 99.998 99.997
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MotionSolve vs. HyperStudy – Which Should We Use?
Use MotionSolve optimization when:
• There are many Design Variables in your model
• Analysis type = Kinematics, Statics or Quasistatics
Use HyperStudy if:
• You wish to perform a design study
• You are doing multi-disciplinary optimization
HyperStudy & MotionSolve are
complementary to each other
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Durability Solutions
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a
a
Why
How
Who
Determine component fatigue life or driver comfort quickly
The N-Post test rig and Road Course Event mimic field/lab testing
The new durability tire is capable of producing accurate results
Engineers and analysts in durability and vehicle dynamics departments
Auto, Truck & Bus, Recreation, Military and Agriculture industries
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N-Post Shaker Event
Applications
• Road Loads
• Ride Comfort
• Controller Performance
Configurations
• Spindle Coupled, Tire Coupled
Input Types
• Disp. , Acc. , Force
File formats
• Csv, Dac, Rpc, Rsp
Auxiliary posts for aero/other loads
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Road Course Drive Event
D:\work-1010\Test\19build51\roads\Belgian-blocks.rdf
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A Tire Model Suitable For Rough Roads
Free alternative to more complex and costly models
Computes vertical & longitudinal forces for tires running over obstacles
Uses a multiple contact method described in Pacejka’s
Tire & Vehicle Dynamics Book. 3rd Edition (ISBN 978-0-08-097016-5)
Forc
e
Time
Point Follower Contact
Elliptical Cams Contact
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General Machinery Solutions
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General Machinery Solutions
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a
a
Why
How
Who
Make simulations simpler
Easily build and analyze complex system models
Engineers and analysts in all industries
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Higher Level Modeling Elements
Cables, winches, pulleys
Linear Actuators,
Struts, Rods
Gears and Cams
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Higher Level Modeling Elements
Aerodynamic loads: Steady and non-
steady state
Generalized joints with friction, compliance, limits & clearance
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Custom Analysis for Strength Analysis & Topology Optimization
(1) Generate the component loading input file automatically from a MotionSolve run
(2) Easily apply the loads to the component FE model in HyperMesh
Basic Joint & force loads
3D contact loads
Moving force loads
Modal loads
Static Analysis with inertia relief ✓ ✓ ✓ ✓
Dynamic Analysis with load time history ✓ ✓ ✓ ✓
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System Design
Solutions
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a
a
Why
How
Who
Allow casual users to create good designs for their mechanical systems
Easily build, analyze and improve complex system models
Designers in all industries (Analysts can start the modeling here)
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Inspire Motion
Given a package space, quickly MECHANIZE, OPTIMIZE and VALIDATE your system to
generate the ideal shape.Package
Space
Optimized
Structure
Improved
Geometry
Validated
Results
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Inspire Motion Improvements Since 2018.0 In A Nutshell
Flexible
Joints
Profile
Editor
Loads
Extraction
Force
Explorer
Save
Motion
Results
Friction in
Rigid JointsContacts
Faster
Meshing
Joint
Couplers
Analytical
Contacts
Enhanced
Plotting
Export
Motion
Animations
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FRICTION IN RIGID JOINTS
Geometric parameters
computed automatically
Can define stiction and
dynamic friction in joints.
LuGre model.
Can access via:
• Property Editor
• Joints table (right-click
column header)
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Contact Solution
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Couplers
Couple the motion of 2 or 3 joints
Couple translational and/or rotational motions
Automatic determination of coupler ratio for cylinders/gears
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GenericModeling
Improvements
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a
a
Why
How
Who
Assemble and solve models to evaluate product behavior faster
Reuse existing data more effectively using the new tools
Engineers and analysts in the ground transportation industry
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Excel Data Export/Import (SLK Format )
Parametric
relationships
in the data are
maintained
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Model Topology Viewer
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CDTire Morphing
Original tire+
property fileMorphingMorphing
New tire property file
New tire property file
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Leaf Spring Builder
New leaf types
• Hockey-Stick Leaf Springs
• Rounded Cross-Section Leaves
• Military-Wrap Spring Eyes
New testing procedures
• SAE J510 test procedure
Support for loaded leaf shapes
• Enter leaves shapes as under their design load
• Compute equivalent beam preloads
• Save the spring as an MV system
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Wrap-Up
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HW 2019.0
provides many new
& improved
solutions
01
Users in all
industries will find
these to be very
useful
02
Use the examples
library to learn
more about the
new capabilities
03