LMS Virtual.Lab System-level Strength and Fatigue for NASTRAN is the solution for optimizing subsystems or whole systems, and tracing strength and fatigue of system parts using MSC.NASTRAN-based stress analysis cases. It uses the multibody simulation capabilities of LMS Virtual.Lab Motion to predict component loads from prescribed system motion, combines these component loads with structural stresses automatically derived from FE-meshes and applies material fatigue parameters to predict the component fatigue hotspots and corresponding fatigue life.
With the MSC.NASTRAN Analysis Driver there is no need to manually setup and launch the MSC.NASTRAN solver for static and dynamic analysis. This integrated approach eliminates time-consuming data handling and file transfer, makes the setup very straightforward, reduces the risk of making errors and highly increases productivity. Both rigid and flexible body based durability analyses are supported. The impact of the structural flexibility on the component loadings is evaluated by driving a MSC.NASTRAN based Craig-Bampton solution. In case the structural flexibility has no impact on the resulting component loadings, a rigid body based analysis case is used. The MSC.NASTRAN static unit load cases are derived from the defined IO Points. The resulting component loads are automatically transferred to Virtual.Lab Durability for detailed strength and fatigue analysis. No manual load transfer, no worries about local axis configurations – all information about each individual system part is kept together!
The LMS Virtual.Lab Durability based post-processing functions provide fast and critical insights into the strength and fatigue life of any component, allowing engineers to quickly investigate hotspots and rerun analyses for many design variants on system level. Design modifications are supported through the Virtual.Lab embedded mesh modification utilities
