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MSC.ADAMS Flex & DurabilityMSC.ADAMS Flex & DurabilityTechnical WorkshopTechnical Workshop
Mike CollingridgeTechnical StaffMSC.Software Corp.
Agenda•Introduction•V2003 recap•V2005 highlights•Roadmap•Discussion
MSC.EASY5
MSC.ADAMS
MSC.Patran MSC.Marc
MSC.Nastran
MSC.Fatigue
Introduction
MSC.Dytran
MSC.Patran
Life/DamageCalculation
Load histories
Component Mode Synthesis
System-level Simulation
Mode shapes
Stress shapes
MSC.Nastran MSC.FatigueMSC.ADAMS
Geometry and Mesh
Introduction - Durability Process for Fatigue
Introduction - ADAMS Architecture
Horizontal Products
ADAMS/Solver
ADAMS/AutoFlex
AD
AM
S/C
ar
AD
AM
S/D
river
AD
AM
S/T
ire
ADAMS/View
AD
AM
S/E
ng
ine
AD
AM
S/R
ailADAMS/Flex ADAMS/Flex
ADAMS/Postprocessor
AD
AM
S/A
ircraft
Extends functionality of Solver and interface products
Supports all industry specific applications
ADAMS/Durability
Utilize existing FE models for modal stress recovery
• MSC.Nastran• MSC.Marc• ANSYS• ABAQUS• I-deas NX Series
Process - BuildCreate ADAMS/Flex body• Prepare FE model in MSC.Patran• Run MSC.Nastran to generate MNF• Replace rigid part with flexible body
� MNF imported automatically� Positioned automatically� Connected automatically
Simulate duty cycles• Static and quasi-static analyses• Transient and dynamic• Critical results automatically
extracted
Construct virtual test lab inputs and outputs• Import physical test data
• MTS Systems RPC® III file• nCode International DAC file
• Efficient spline interpolation• Add virtual measurements like
strain gauges
Process - Test With the ADAMS/Vibration plug-in you can perform forced-vibration
analyses to assess NVH attributes.
Process - Review� System or component animation� Animation of deformed FE mesh� Modal stress recovery� Contour plots� Vector plots� Powerful XY plotting� Hot spot tables� Report generation� Object measures� Export loads to FEA� Assess component life
Process - ImproveOptimize design• Easily exchange one flexible
body for another • Update component with local
mesh refinements• Utilize durability functions
• Maximum stress• Minimum life
• Design Study, DOE• System Optimization
You can also use ADAMS/Insight to
perform DOE studies
Recap – History12.0
� Flex• Improved control for damping thru
expression support (FXFREQ)
• Contour plots for MFORCE• Flex-body states from user-subs
• Flex-body support in C++ Solver
� Durability• FEA Modal Stress Recovery
• Stress or strain visualization
• FEA load export improvements• nCode FE-Fatigue interface
• Experimental data filtering
2003� Flex
• Faster simulations (Fortran solver)• Single precision MNF• Marker improvements (C++ solver)• Extended modeling element compatibility
(C++ Solver)• Stress modes support in I-DEAS
� Durability• Quasi-Static Stress Recovery• Stress & Life Functions• Hot Spot Report Generation• Contour probe• MSC.Fatigue Interface• Toolkit: res2dur• Improved post-processing
Recap - MSC.Nastran-ADAMS InterfaceSeamless Integration
Special Case
Control
Recap - Nastran-ADAMS Interface
MSC.Nastran msc2mnf MSC. ADAMS
MSC.ADAMS
op2 mnf
mnfx.alt
V2004 & V2005
mnf
op2
DBALL
MSC.Nastran
(optional)
V2001
BDF
BDF
xdb (optional)
Recap - Nastran-ADAMS -- Benefits• Nastran writes MNF directly• Support for SOL 103,111,112, and 106 (new)• Nastran orthonormalizes & computes invariants• Preload effects included• MNF Optimization via PLOT sets and PLOTELs• No DMAP alter required• Nastran & ADAMS can run on different platforms• Limited support for DMIGs• No superelement license required• Writes single or double precision MNFs• Support for Part SEs and residual structures• SE residual vectors (mode quality) improvements
V2005 – Improved MSC.Nastran Integration• “Rigid” MNF
� Geometry and rigid body mass properties only� Verify attachments before computing modes
� Quick exchange for system model debugging
• Stress or strain sets (shortened modes)
• XDB Support
� Interoperability� Flexibility & Scalability� Performance� Capacity� Collaborative� Ease of Learning & Use� Customizable & Extensible
Data Backplane� Leverage Existing
Knowledge & Investments
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ACMS Support� Faster MNF generation with domain
decomposition (DMP support)
� MDACMS – Support for lots of MPC sets (RBE*)
AUTOMSET� Automatically resolves dependent DOF conflicts
� No more need for “UM” option on RBE3
AUTOQSET� Superelement
definition easier and less error prone
� No longer need to specify QSET or define SPOINTs
V2005 – Improved MSC.Nastran Integration
� Interoperability� Flexibility & Scalability� Performance� Capacity� Collaborative� Ease of Learning & Use� Customizable & Extensible
Data Backplane� Leverage Existing
Knowledge & Investments
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V2005 – Improved MSC.Marc IntegrationMNF Generation• Directly from Marc
• Stress & Strain modes• Preloads• Mentat support
� Interoperability� Flexibility & Scalability� Performance� Capacity� Collaborative� Ease of Learning & Use� Customizable & Extensible
Data Backplane� Leverage Existing
Knowledge & Investments
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V2005 – Automatic Flex Body Exchange
� Interoperability� Flexibility & Scalability� Performance� Capacity� Collaborative� Ease of Learning & Use� Customizable & Extensible
Data Backplane� Leverage Existing
Knowledge & Investments
�
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V2005 - Faster Flex Body SimulationsNew Integrator - HHT Second Order
� High-frequencies numerically damped out� Lower frequencies accurately tracked� Step size can increase to gain speed� Jacobian unconditionally stable� No problems when time step is small� Fewer number of equations� 3 to 5X speedup for Durability simulations
� Interoperability� Flexibility & Scalability� Performance� Capacity� Collaborative� Ease of Learning & Use� Customizable & Extensible
Data Backplane� Leverage Existing
Knowledge & Investments
�
CPU Evals Steps CPU Evals StepsSI2 GSTIFF 7609 906021 346039 9302 1090749 350031I3 HHT 506 195722 81356 NA NA NA
Formulation IntegratorC++ Solver F77 Solver
15x faster !!
½ Suspension model on W2K
V2005 – Shortened Stress/Strain Modes• Define sub-regions in FEM (sets)• Smaller MNF• More efficient post-processing
� Interoperability� Flexibility & Scalability� Performance� Capacity� Collaborative� Ease of Learning & Use� Customizable & Extensible
Data Backplane� Leverage Existing
Knowledge & Investments
��
V2005 – Improved Hot Spot Calculations
� At least 3 times faster� Output directly from ADAMS/Solver� Smaller result files (3 -18x smaller)
� Interoperability� Flexibility & Scalability� Performance� Capacity� Collaborative� Ease of Learning & Use� Customizable & Extensible
Data Backplane� Leverage Existing
Knowledge & Investments
�
FEMDATA/id, STRESS, FLEX_BODY = fbid, HOTSPOTS = n, RADIUS = r, CRITERION = c
�
Roadmap Roadmap –– ADAMS/FlexADAMS/Flex
Short Term• Generalized Modal
Damping
• Attachment Mode Support
• Contact – Phase 0
• Automatic Mode Selection
• State Dependent Modal Force
Mid Term
• Contact – Phase I
• Test Data Correlation
•MAC
•Experimental MNF
• Flex-AutoFlex Merge Phase I
Long Term
• Contact – Phase II
• Flex-AutoFlex Merge Phase II
Roadmap Roadmap –– ADAMS/DurabilityADAMS/Durability
Short Term• MSR with Nastran
Toolkit
• Improved MSC.Fatigue Integration – Phase 0
• Frequency Domain MSR
• Hotspot Improvements
• QSSR Improvements
Mid Term
• QSSR with Nastran Toolkit
• Improved MSC.Fatigue Integration – Phase I
• Frequency Based Fatigue
• Automatic (A priori) Hot Spot Selection
Long Term
• Improved MSC.Fatigue Integration – Phase II
ADAMS/Flex ADAMS/Flex –– CurrentlyCurrentlyGeneralized Modal Damping
Nastran ComponentADAMS System
[K]
[C] – proportional damping
[M]
[D]**
**Note: Planned for 2006 Release
Nastran – ADAMS Generalized Damping
DiscussionDiscussionDo you understand our direction?
Do you agree with the direction?� Are your needs being met?� What is going well?� Are there things that could be better?
What did we miss?
Thank you for participating inthe Flex-Durability roundtable
–The Solver Team