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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.


Author

Mr. Frenzel is responsible for developing products for dynamic analysis. He also provides technical support for customers of Dlubal Software.

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