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Multi-Body SimulationSimpack Introduction

Your NameYour Title

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Simpack IntroductionAgenda

� SIMULIA Overview

� Simpack History

� What is Multi-body Simulation (MBS)

� Industry applications

� Simpack product highlights

� Conclusion

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Structures & Solids

+V R

Thermal Fluids Electrical Chemical Controls …

Functional

Logical

Physical

(MacroscaleContinuum)

Physical

(MicroscaleNon-Continuum)

SimpackMultiscale

Multiphysics DisciplineOur Technology

Vision

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DS Acquired SIMPACK in July 2014

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1993 SIEMENS and Bosch start using Simpack

2007 Vestas, Winergy, Hansen and FVA choose Simpack

2011 First release of Simpack 9

2013 JLR adopts Simpack 9

1987 DLR and MAN Technology starts developing Simpack

1998 BMW, Daimler, Land Rover start using Simpack

2005 Daimler and BMW use Simpack Engine

More than 30 years MBS experience, R&D and Engineering!

2003 Simpack Rail became worldwide market leader

2014 SIMPACK acquired by Dassault Systemes

SIMPACK History: Select Milestones

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MBS vs FEAHigher abstraction level enables MBS to be faster than FEA

Hydrodynamic bearing

Gear contact

Valve train componentsChain guides

� E.g. linear, nonlinear or frequency dependent bushing

� Rigid or modally reduced flexible bodies

� Special contact elements e.g. Gear Pair, Rail Wheel

� Special bearing elements, e.g. Rolling Bearing, Friction

Bearing (EHD)

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Focus of MBSMulti-Body Simulation

� Eigen frequencies

� Nonlinear motion

� Transients

� Chaotic behavior

� Flexible bodies

� System simulation

0.50 Hz

0.32 Hz 0.76Hz 1.27Hz

0.07 Hz

advance

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Focus of MBSVibration Analysis

� Analysis of non-linear system behavior

� Resonance analysis

� Determine maximum motion and loads

� Design of experiments (DOE)

� Optimization

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Focus of MBSSystem Behavior

� Coupled effects

� Internal and external excitations

� System behavior

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Focus of MBSSystem Behavior

� Coupled effects

� Internal and external excitations

� System behavior

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FEA / Durability

Abaqus

fe-safe

ANSYS

Nastran

PERMAS

FEMFAT

CACE-Programs

FMI (model exchange and co-simulation)

Dymola, Simulink, Amesim, SimulationX

CAD-Programs

CATIA

SOLIDWORKS

Pro/ENGINEER

Optimization

Isight

ModeFrontier

Matlab\

Real-Time

dSpace

Etas

Mathworks xPC

Etc.

Aerodynamics

AeroDyn

AeroModule

Flex5

vsAero

Flower

Etc.

Focus of MBS

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Simpack Highlights� Solver

� Fast, accurate, robust, versatile

� Flexible body integration

� Drivetrain applications

� High frequency analysis

� Almost zero numerical damping

� Multi-core support

� Real-time

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Simpack Highlights� Gear Pair element

� Helical, Ring, Bevel, Rack and Pinion

� Fast analytical contact

� Micro geometry corrections, profile and flank

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Simpack Highlights� Other elements/components

� Non-linear, amplitude and frequency dependent bushing, e.g. hydro mount

� Flexible valve springs

� Flexible chain guides

� Elasto hydrodynamic bearing

� And many more

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Simpack Highlights� Realtime for hardware in the loop (HiL),

software in the loop (SiL), and man in the loop (MiL)

� Many DOF (degrees of freedom) with higher frequency content

� Direct use of high-fidelity parameterized models, i.e. no model reduction

� Permits use of non-linear and frequency dependent bushings and mounts

� Not restricted to predefined template models

� Automatic parallelization

Model Fidelity

Look-up table

model

Basic component

model

High fidelity

component model

Low frequency model

testing

(static suspension)

Model correlation up to

high frequencies.

Virtual component

analysis and testing

< 20

> 200

Attainable

Goals DoF

Other Solutions

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FE Model

• Nodes: 400,000

• DOF: 2,400,000

• File size: 60 MB

• Linear

MBS Flexible Body

• Modal representation

• DOF 5 (or more)

• File size: 0.8 MB

• Linear

Modal Reduction

MBS Model

• Complete system and environment

• Flexible and rigid bodies

• DOF: 100

• File size: 4.4 MB (CAD 40 MB)

• Non- linear

Flexible Bodies

0 5 10 15 20 250

0.5

1

1.5Seat rail acceleration, RHS

Frequency (Hz)

Acc

ele

ratio

n (m

/s2 )

SIMPACKTest

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14 � Deformation analysis in Simpack Post

�E.g. displacements, normal velocities

� Stress analysis in Simpack Post

�Superposition of modal stresses

�Less than 0.5% difference to FE-model

� Durability

�Export to fe-safe and other tools

� Co-simulation with Abaqus/Explicit,

planned for Simpack 9.9

Flexible Bodies

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� Simbeam

� Flexible structures using beam elements

� Euler-Bernoulli, Timoshenko

� Parameterization

� 2nd order bending and stiffening

� Non-linear Simbeam (large deformations)

Flexible Bodies

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Simpack Products� Simpack modules

� Simpack Pre, Post, Solve

� Application and industry specific add-ons

� Engine (Chain/Belt/Gear Drive, Crank/Valve Train)

� Automotive (Ride, Handling, Drive and Ride NVH, Transmission gearbox, etc.)

� Rail (comfort, rail wear, track interaction)

� Wind

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Simpack Products

� General Modules

� Realtime

� User routines

� Contact

� and more

� Interfaces

� CAD interfaces

� (FMU) import/export

� FEM interfaces

� Durability interfaces

� MATLAB/Simulink interfaces

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Simpack Pre

� Model creation and modification

� Icon driven Intuitive User Interface

� 2D/3D view

�Easy to understand regardless of

model complexity

� Rich element library

� Interfaces to industry standard

CAD/CAE applications

Model TreeModel Tree

Message LogMessage Log

View Control

ToolbarsToolbars

3D/2D Model View3D/2D Model View

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Simpack PostMBS model results

� Easy to navigate interface

�Data handling

�Export/import

�Curve data and filters

�Multi-model management

�Animation

�State Plots

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Simpack WizardScalable deployment

� Simpack Wizard

� Enables easy setup of standardized

models and analysis processes for

“deployment mode” of Simpack

� Non-expert Simpack users can carry out

company-specific standard analyses and

review the results without difficulty

� Based on standard Simpack model

databases which can be adapted using

Simpack Pre

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Simpack Automotive� Applications

�Suspension analysis

�Powertrain, gearbox and driveline

�Handling, ride and NVH

�SiL, HiL and MiL

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Simpack Engine� Applications

�Complete system simulation

�Valve train and crank train

analysis

�Timing mechanism

�Accessory drive

�NVH

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SIMPACK Drivetrain� Applications

�3D system behavior simulation

�Resonance analysis

�Stochastic and transient response

�Gear whine and rattle

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SIMPACK Rail

�Applications

�Simulation of forces on wheels and rails

�Derailment, profile wear

�Passenger comfort

�Switches and crossings

�Crosswind, gauging and crash

�Pantograph—catenary interaction

�Homologation

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SIMPACK Wind

�Application

�Load calculations

�Resonance analysis

�Simulation of extreme events,

e.g. wind gust, voltage dip,

emergency braking

�Detailed drivetrain analysis

�Offshore

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FEA Multiphysics

Simulation

Abaqus

Non-parametric Optimization

For Fluids and Structures

Tosca

Durability &

Fatigue

fe-safe

Process Integration &

Design Optimization

Isight

SIMULIA: The Power of the Portfolio

Multi-body Simulation

Simpack SLM

Simulation Lifecycle

Management

Note: Simpack and SLM not included in Extended Packaging

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Extending the “Power of the Portfolio”

� Simpack component model parameter identification using Isight

�Set up communication between Simpack testrig model and Isight

� Identify and optimize Simpack element parameters based on test data reference with

Isight

results with initial

element parameters

component element model

testrig optimized component within complete

system simulation

results with optimized

element parameters

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14 Structural Optimization – Simpack, Abaqus, Tosca

Extending the “Power of the Portfolio”

� Determine dynamic load with Simpack

� Apply load data to component model in Abaqus

� Define design space and optimization criteria in Tosca

� Optimize shape in Tosca

� Validate new design with Simpack dynamic load simulation

Simpack Abaqus Tosca Simpack

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ONE CLICK

All Relevant Links

� www.SIMPACK.com

� Conference and user meeting presentations

� Newsletter articles

� Users, videos

SIMPACK Website

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ConclusionMBS throughout the design process

� Solver - fast, accurate, robust, versatile

� Multi-physics coupled system behavior

� System dynamics

� “It’s fun to use”

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