Add-on Module for RFEM 5
RF -DYNAM Pro - Nonlinear Time History

• User-defined time diagrams as a function of time, in tabular form, or as harmonic loads
• Combination of the time diagrams with RFEM/RSTAB load cases or combinations (enables definition of nodal, member, and surface loads, as well as free and generated loads varying over time)
• Combination of several independent excitation functions
• Nonlinear time history analysis with the implicit Newmark analysis (RFEM only) or the explicit analysis
• Structural damping using Rayleigh damping coefficients or Lehr's damping
• Direct import of initial deformations from a load case or combination (RFEM only)
• Stiffness modifications as initial conditions; for example, axial force effect, deactivated members (RSTAB only)
• Graphical display of results in a time history diagram
• Export of results in user-defined time steps or as an envelope

RF-/DYNAM Pro - Nonlinear Time History is integrated in the structure of RF‑/DYNAM Pro - Forced Vibrations and extended by two nonlinear analysis methods (one nonlinear analysis in RSTAB).

Force-time diagrams can be entered as transient, periodic, or as a function of time. Dynamic load cases combine the time diagrams with the static load cases, which provides high flexibility. Furthermore, it is possible to define time steps for the calculation, structural damping, and export options in the dynamic load cases.

Due to the integration of RF‑/DYNAM Pro in RFEM or RSTAB, you can incorporate numeric and graphic results from RF‑/DYNAM Pro - Nonlinear Time History to the global printout report. Also, all RFEM and RSTAB options are available for a graphical visualization. The results of the time history analysis are displayed in a time history diagram.

The results are displayed as a function of time and the numerical values can be exported to MS Excel. Result combinations can be exported, either as a result of a single time step or the most unfavorable results of all time steps are filtered out.