MSC Nastran Embedded Fatigue
Most structural systems undergo cyclic loads during their service life and designers need to design them to ensure they do not fail early in life. Fatigue or durability studies are a critical part of product development, as early failures could raise warranty costs and loss of market share. While fatigue analysis is generally recognized as a key element of design, it is often done in either on ad hoc basis or in an inefficient sequential manner, with stress analysis followed by a durability analysis, adding to the development time and cost. Use of multiple products further adds to cost and analysis time.
MSC Nastran Embedded Fatigue (NEF) is an innovative durability analysis module that features the integration of fatigue calculations within MSC Nastran. In effect, stress and fatigue calculations can occur in one simultaneous operation. This is a significant step forward from GUI based fatigue processes, where fatigue studies are performed after stress studies are complete, and often by different analysis groups, and offers engineers a wealth of new opportunities to improve the life of products. Capabilities include:
- Stress life (S-N)
- Strain life (E-N)
- Multi-axial responses processed using the Critical Plane method
- Parallel processing up to 100 threads
- Multiple fatigue analysis in a single job submission
Fatigue analysis of a wheel carrier. Nodes:325k, Elements: 200k, 8 Load Sources
There are numerous reasons why fatigue analysis is faster with NEF, but 2 of the most notable are listed below:
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