FAQ 004898 EN
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For plastic stresses of ductile materials such as steel, yielding effects occur where the increase in deformation comes along with hardening. They lead to permanent deformations and in extreme cases to the destruction of the structural component.
Stress-strain curve according to  for the compression range: a) for the nonlinear calculation; b) for the cross -section design
Stress-strain curve in the tension area according to  for the determination of internal forces and deformations in nonlinear methods
Most common performance classes L1 and L2 with the corresponding basic values of the centric post -cracking tensile strength
Stress-strain curve on the tension side according to  for the cross-section design in the ultimate limit state
Depending on stiffness, mass, and damping, structures react differently to wind action.
- How does the "Orthotropic Plastic" material model work in RFEM?
- When entering a new material using the Diagram definition type, the first row is locked. How can I define the material?
- What is the difference between the materials Isotropic Plastic 1D and Isotropic Nonlinear Elastic 1D?
- I have purchased the add-on module RF‑MAT NL, but I cannot find it anywhere.
- There are two different add-on modules for a response spectrum analysis in RF‑/DYNAM Pro. What can be the reasons for the different results of both add-on modules?
- When converting from the manual definition of reinforcement areas to the automatic arrangement of reinforcement according to Window 1.4, the result of the deformation calculation differs, although the basic reinforcement has not been modified. What is the reason for this change?
- I would like to define a line support with ineffective tension and apply the tension force on this line by using a nodal support instead. Why does the line support still receive a tension force?
- How is it possible to make factorized combinations of a dead load in the context of form‑finding?
- I obtain different results when comparing the deformation analysis in the RF‑CONCRETE add-on modules and another calculation program. What could be the reason for this?
- In a nonlinear structural system, some load cases do not converge. However, load combinations can be calculated without any problems. Why?
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements
Consideration of nonlinear material laws