- RFEM 6
- Stress-Strain Analysis for RFEM 6
- Structure Stability for RFEM 6
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- Stress Analysis
- Stability Analysis
Optimization and Safety with RFEM for Structures in Live Shows
Get a better understanding of the stress distribution within member cross-sections using clipping planes.
The modal relevance factor (MRF) can help you to assess to which extent specific elements participate in a specific mode shape. The calculation is based on the relative elastic deformation energy of each individual member.
The MRF can be used to distinguish between local and global mode shapes. If multiple individual members show significant MRF (for example, > 20%), the instability of the entire structure or a substructure is very likely. On the other hand, if the sum of all MRFs for an eigenmode is around 100%, a local stability phenomenon (for example, buckling of a single bar) can be expected.
Furthermore, the MRF can be used to determine critical loads and equivalent buckling lengths of certain members (for example, for stability design). Mode shapes for which a specific member has small MRF values (for example, < 20%) can be neglected in this context.
The MRF is displayed by mode shape in the result table under Stability Analysis → Results by Members → Effective Lengths and Critical Loads.
The deformation process of the global deformation components can be represented as a movement sequence.
The results of solid stresses can be displayed as colored 3D points in the finite elements.