Nonlinear Dynamic Analysis Solidworks

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  • เผยแพร่เมื่อ 27 ส.ค. 2024
  • Notes on Defining Nonlinear Studies
    When defining a nonlinear study, you can choose a static or dynamic study. Nonlinear studies are solved in the time domain.
    Nonlinear analysis requires specifying a solution control method. The interface uses the Force control method by default as it is the proper choice in most cases. The Force control method allows you to control each load and restraint individually by a time curve. The Displacement and Arc-Length control methods calculate a multiplier for all loads at each solution step. In other words, all loads are changed proportionally at each solution step.
    To select the Displacement or the Arc-Length control method, click the Advanced Options button in the Solution tab.
    The Start time and End Time specified in the Solution tab, in seconds, are not used by the Arc-Length control method. Time values are pseudo values unless:
    1) you are using material models with creep effects,
    2) you are considering thermal effects from a transient thermal study.
    Time values are always real for nonlinear dynamic studies.
    The time increment in the Solution tab is interpreted based on the control method selected. For the Force and Displacement control methods, it is used to progressively increment time from Start time to End Time. For the Arc-Length control method, it is used internally to estimate an initial incremental value for the arc length. The solution stops based on parameters specified in the Advanced Options tab.
    The Restart option allows you to continue a solution from the last successful solution step. To make a study restartable, you must select the Save data for restarting the analysis before running the study. To restart a problem for which restart information is available, select the Restart check box in the properties of the study before running.
    You must decide what control method to use. Force control is the most common and it is the only one available for dynamic nonlinear studies. However, the Displacement or Arc-Length control methods can be more appropriate to use for some class of problems. Contact is supported with the Force control method only.
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