With the orthotropic plastic material model in RFEM 5, you can calculate solids with plastic material properties and evaluate them according to the Tsai‑Wu failure criterion. The Tsai-Wu criterion is named for Stephen W. Tsai and Edward M. Wu, who published it in 1971 for plane stress states.
KB 000622 | Using Tsai-Wu Material Model (Orthotropic Plastic)
The results of solid stresses can be displayed as colored 3D points in the finite elements.
If the check box 'Number of load increments' is deactivated, the number of load increments will be determined automatically in RFEM to solve nonlinear tasks efficiently.
The method used is based on a heuristic algorithm.
With this function, it is possible to refine the FE mesh on surfaces automatically. The mesh refinement is gradual. In each step, the FE mesh is recreated based on an error comparison of the results in the previous calculation step. The numerical error is evaluated from the results of surface elements and is based on the energy formulation of Zienkiewicz-Zhu.
The error evaluation is carried out for a linear static analysis. We select a load case (or load combination) for which the FE mesh is generated. The FE mesh is then used for all calculations.
It is possible to access the TeamViewer directly by opening the Help menu of RFEM and RSTAB. Customers with Service Contract Pro can thus benefit from easy and quick online support via video conference.