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Tengkey PSM SoftwarePrescribed Structure Motion

E-ATC 2017

CTSIM GmbH - Confidential information and/or copyright material

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Prescribed Structure Motion SoftwareContents


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1. CTSim Overview

2. PSM Introduction

3. Restraint systems overview in Side Impact

4. PSM Features & Application examples Basic Mapping Scaling Sled Motion

5. PSM Conclusion

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1. CTSim Overview

2. PSM Introduction



5. PSM Conclusion

CTSim - Brief


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Office LocationHeidelberg – Germany

Key featuresHas been in business since 2011Worldwide activities

Software Dev.FE Simulation - RadiossTengkey PSM SoftwareEtc.

Passive SafetyCrash Test BarriersEnergy Absorbers for ATD & Flex-Pli, CatapultsEtc.

Active SafetyECVT developmentEtc.

Passive Safety 60%Active Safety 20%Software Dev. 20%

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1. CTSim Overview

2. PSM Introduction



5. PSM Conclusion


CTSim is supporting:Software development done by TengkeySoftware distribution in Europe

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Prescribed Structures MotionDeveloped by Tengkey Auto Safety System Ltd.

PSM - introduction

Version 2.1Stand-alone softwareWorking with All Simulation codes: Radioss etc.

Options: Basic PSM / Mapping / Scaling

Side Impact simulationFrontal impact under development

Software objectiveOptimized dummy Occupant Safety Assess proposal to structure

How ?Reduce cpu timeStandardize input & consistency with CAE teamFacilitate exchange CAE / Testing Teams


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PSM is at the interface in between Simulation &

Testing

+Input: FEA Full Vehicle Impact

Output: Sub-structure PSM

Full vehicle test

After

Before

Output: Sub-structure Mapping/Scaling

TK-PSM Software

PSM - introduction


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Global Overview

PSM - introduction


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Simulation Overview Simplified & Optimized

“Occupant Safety”

PSM - introduction


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Testing Overview

Parameter studies & “Occupant Safety”

optimization within PSM

Run multiple TestsTime consuming

CostsEtc.

Run minimum tests

Save time & costs

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1. CTSim Overview

2. PSM Introduction



5. PSM Conclusion

Simulation within full vehicle model with:

Re-run full FE vehicle model in each caseDebug, modify and correlate the full structure model

Large model size & High CPU time cost

Impossible to parameterize the full vehicle structure and:

study the structure intrusion modestudy the effect on dummy response


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Restraint Sys. Simulation in Side ImpactMethod 1: Full Vehicle Model

Simulation within sub-system modelRe-run the sub-system model for restraint system design, cases study and optimizationModify and correlate the structure intrusion by using special tool, such as TK-PSMDefine PSM file as structure boundary

Reduced model size & Less CPU time cost

Parameterize the vehicle structure intrusion:

Study the structure intrusion modeFeedback to structure team to upgrade structure crashworthinessEtc.


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Restraint Sys. Simulation in Side ImpactMethod 2: Sub System Model

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1. CTSim Overview

2. PSM Introduction



5. PSM Conclusion

Output:Structures Motion

TK-PSM Software

Input: CAE results such as Radioss results

Repeat the FE structure intrusion by PSM & Include in sub-system side model

All structure motion can be input and output as included motion fileExample: side intrusion, MDB Barrier motion, etc.


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PSM – Basic FeatureOverview

PSM – Basic Feature

Prepare a sub-structure key fileExtract side intrusion data from d3plot filesMake PSM include file for sub-system simulation


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Example

Output:Sub-Structures PSM

Input: LS-Dyna full impact simulation

TK-PSM Software


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Mapping the full test data from crash test data into CAE simulation result

Finish the FE structure correlation directly and quickly

PSM – Mapping FeatureOverview

After mapping

Before mapping

Export: Structure motion

TK-PSM Software

FEA Structure

Crash Test

PSM – Mapping Feature

Mapping the test data into FE sub-structure intrusion data to correct the CAE data


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Example

After

Before

Output:PSM & Test data mapping

TK-PSM Software

PSM – Mapping Feature


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Example


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PSM – Mapping FeatureExample

Point 01 - Roof rail

Dis

pla

cem

ent

Time

Point 02 – BP Beltline Point 03 – BP Middle


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Parameterize the side structure & scale the side intrusion data

Scale the MDB barrier impact, Pole impact, etc.Study the intrusion difference & effect on dummy response (injury criteria's)

PSM – Scaling FeatureOverview

TK-PSM Software

FEA Structures

Scaled Structure motion

PSM – Scaling Feature

Parameterize side intrusion and scale the intrusion dataStudy the different intrusion & effect on dummy response


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Example

After

Before

PSM Scaling

TK-PSM Software


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To simulate the side sled motionEspecially for multi-points motion in side MDB Sled

PSM – Sled Motion feature (Testing)Overview

PSM – Sled Motion feature (Testing)

Make the multi-points sled motion data with input Crash test sensor data on side sub-structure


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Example

TK-PSM Software

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1. CTSim Overview

2. PSM Introduction



5. PSM Conclusion

PSM Software FeaturesBasic, Mapping, ScalingUser friendly interface

InputFull vehicle CAE simulation

LS-DYNA model (.key file)MADYMO PSM dataRADIOSS “On Demand”

Animation file (d3plot)Test Data’s

Sensor time history, etc.

Output Map side crash test data into FE sub-structureScale the sub-structure intrusion dataLS-DYNA PSM include file

Parameters for time and displacement switchEasily switch between units (S1, S2, S3)

MADYMO PSM include fileInternational unit (S1)

RADIOSS include file“On Demand”


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PSM - OutlookConclusion

PSM is independent and transparent

interface

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Any Questions…

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ContactDr. MALAK ArnauldManaging [email protected]


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https://www.linkedin.com/company/ct-sim-gmbh

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