Tag: Modal Analysis

Modal Analysis with Pre-stress Modal analysis with pre-stress is a technique that can be used to analyze the natural frequencies and mode shapes of a structure with non-linear material properties. Here are some of the pros and cons of using this method: Pros: Cons: Non-linear static analysis with a reduced-integration element: Harmonic balance method: Direct…

Modal Analysis using pre-stress from static nonlinear analysis It is possible to solve for the modal behavior of a structure with non-linear material properties using pre-stress options in some finite element software. However, the specific capabilities of the software and the ability to use pre-stress options for non-linear material modal analysis will depend on the…