LMS Virtual.Lab Vibration Fatigue
Traditionally, fatigue damage is associated with time-dependent loading from local stress or strain histories. In many situations, a description in the frequency domain is more practical.
For example, take the case of a randomly excited shaker table or an active wind turbine, where loading time signals are not easily determined, but described using stationary processes or, engine accessories which are excited by the engine and the loads are defined in small frequency bands. Another example would be simulating a complete sine sweep on a virtual shaker table usually handled in the time domain but, for efficiency reasons, the simulation is best completed in the frequency domain using a harmonic vibration approach.
LMS has solid experience in frequency-based solvers and both component-level and system-level load transfers. With its vibration fatigue solver, LMS combines its leadingedge knowledge with durability assessment methods using frequency-based solvers. Users can easily benefit from the simple and consistent set-up and highly efficient analysis methods, including random and deterministic loads in the frequency domain. The solver combines well-known methodology with technology breakthroughs like real multi-axial load and local stress behavior as well as seam and spot weld capabilities for highly accurate results. Post-processing features are adaptable to particular applications to quickly and efficiently identify critical regions and provide answers to the durability issue.
