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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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S.C
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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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14 Simpack and Isight
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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