Modal Time History Analysis - Advanced Options
The Advanced tab in the Modal Time History dialog box sets the numerical integration method and its parameters.
For a linear variation of acceleration between time-steps, select:
For a constant acceleration between time-steps, select:
Theta. The value of theta controls the numerical stability
For theta = 1, the solution formulation is similar to the Newmark's linear acceleration method.
For theta greater or equal to 1.37, the Wilson's method is unconditionally stable.
Related Topics
Modal Analysis