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2019-10-15

Nonlinear Material Behavior in Time History Analysis

Is it also possible to use nonlinear material behavior in a time history analysis?


Answer:

In order to consider nonlinearities in dynamics, the RF‑/DYNAM Pro – Nonlinear Time History add-on module is required in RFEM 5 or RSTAB 8. This module is different in RFEM 5 and RSTAB 8, depending on the type of nonlinearities to be applied.

RSTAB 8 – Nonlinear Time History Analysis
  • Nonlinear member types, such as tension and compression members, as well as cables
  • Member nonlinearities, such as failure, tearing, and yielding under tension or compression
  • Support nonlinearities, such as failure, friction, diagram, and partial activity
  • Hinge nonlinearities, such as friction, partial activity, diagram, and fixed if positive or negative internal forces
RFEM 5 – Nonlinear Time History Analysis

In addition to the nonlinearities mentioned above, it is also possible to use nonlinear material behavior.


References
  1. Handbuch RF-DYNAM Pro. Tiefenbach: Dlubal Software, Januar 2020.