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Add Event (Variable)

The Add Event (Variable) PropertyManager allows you to define a variable amplitude event for a fatigue study. You can define multiple fatigue events for one fatigue study. A variable amplitude fatigue event refers to one or more static studies, or to a particular solution step of a nonlinear or time history linear dynamic study.

  • Load

    • Get Curve. Opens the Load History Curve dialog to define the curve data. You can define the curve manually or load a predefined history.

The Simulation Curve library includes sample Load History curves from SAE.

    • View. Graphs the load history curve.

    • Study Association . Sets the reference static study.

      • No. Study counter. Only one study is allowed for each variable amplitude event.

      • Study. Sets the reference static study. Click in this cell to select a study from the drop-down menu. The list of studies includes the studies that are associated with the currently active configuration only.

The program uses linear theory. Scaling results is invalid if the static study includes nonlinear effects such as contact or large displacements.

      • Scale. Use this scale factor to relate the amplitudes of the variable load history curve to the load in the study. You cannot scale loads defined in a nonlinear study.

For example if the amplitudes are measured in volts, the scale factor must relate Volts to the load in the study.

The load history can represent strain values.

If the model is subjected to multiple loads, define multiple studies with one load in each study. You can then define one event for each load case with the proper scale factor.

  • Option.

    • Number of Repeats. Repeats the curve data the specified number of times.

    • Event Start Time. Use this entry to time the selected multiple events. This input is ignored if you define a single event for the study.

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