Amplitude Curves

An amplitude curve:

  • allows arbitrary time (or frequency) variations of load, displacement, and other prescribed variables to be given throughout a step (using step time) or throughout the analysis (using total time);

  • can be defined as a mathematical function (such as a sinusoidal variation), as a series of values at points in time (such as a digitized acceleration-time record from an earthquake), as a user-customized definition via user subroutines, or, in Abaqus/Standard, as values calculated based on a solution-dependent variable (such as the maximum creep strain rate in a superplastic forming problem); and

  • can be referred to by name by any number of boundary conditions, loads, and predefined fields.

The following topics are discussed:

Related Topics
About Prescribed Conditions
In Other Guides
The Amplitude toolset