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

MotionSolve 2019.0

Altair Korea

June 4, 2019 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved.©

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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

Documents

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