Engine Keyword Describes the initial stresses that will be imposed gradually.




  1. This keyword is used only for nonlinear implicit analysis and it is recommended to use when there is out-of balance at initial state due to initial stresses.

    Example: in /IMPL/SPRBACK, initial stresses will be added gradually (proportional to the time passed) to avoid high out-of-balance forces during each increment so that the convergence is better managed. When there is loading in the analysis, linear function (of time) is recommended for loading, if possible.

  2. When monitored volume type 3 is available in the model, the keyword is activated automatically.