MSC.Fatigue 2000 Wheels Module
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Transcript of MSC.Fatigue 2000 Wheels Module
MSC.Fatigue 2000Wheels Module
MSC.Fatigue 2000Wheels Module
DEVELOPED IN COLLABORATION WITH BFG AEROSPACE AND
nCODE
TireLoads Data
Apply BoundaryConditions
WheelSolid Model
Create FEA Mesh
WheelFEA
Model
StressSolutions
MSCFatigue
Program
FatigueLife
Predictions
FatigueSolutions
MSC.Fatigue- WheelsPROCEDURE
QSG - Demo ModelQSG - Demo Model
Multiple Results - TravelMultiple Results - Travel
N=36 Static Load Cases
Multiple solutions performed to
obtain stresses for each node at
various positions relative to the load.
Stress at Node n
1 2 ... 3635...
Stress-time history createdfor each load condition...
Stress-time history createdfor each load condition...
• Display Results
PROCEDUREPROCEDURE
• Extract stress histories and calculate fatigue lifes from stress data from multiple FEA solutions– User selects the FEA solution sets used to define
each load condition
• Determine plane of critical fatigue damage– Calculate stresses and fatigue damage in angular
increments about each node– Sum damage for each angular increment
FE-Based Wheel FatigueAnalysis Using MSC.Fatigue
FE-Based Wheel FatigueAnalysis Using MSC.Fatigue
MODIFICATIONSTO MSC.FATIGUE
Wheel Fatigue: General SetupWheel Fatigue: General Setup
Wheel Fatigue: Loading Info...Wheel Fatigue: Loading Info...
After selecting “full analysis” on the job control form, the software produces a stress-time history for each node
containing N points (extracted from the N load cases). It then conducts a rainflow cycle count and
calculates fatigue damage (a typical SN analysis).
Wheel Fatigue: Job Control & Results
Wheel Fatigue: Job Control & Results
Interactive
FE-Based Wheel FatigueAnalysis Using MSC.Fatigue
FE-Based Wheel FatigueAnalysis Using MSC.Fatigue
RESULTS
Fatigue Life Contours (log scale)Fatigue Life Contours (log scale)
SummarySummary
• MSC.FATIGUE provides benefits of an FE-based fatigue analysis design process.– Reduced development time– Reduced development cost– Improved product quality
• MSC.FATIGUE “Wheels” module developed is fully functional in core Fatigue.