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Normally, if you set the damping coefficient of a spring force to 0 and run a simulation, harmonic oscillation is expected to occur. However, the analysis result shows damped oscillation rather than harmonic oscillation. This unexpected result is caused by the numerical damping parameter used in the numerical analysis.
Numerical damping is a parameter used to minimize oscillation, instability, and divergence problems that may occur in the numerical analysis of a dynamic model.
In MBD for ANSYS, you can define the numerical damping by performing the following steps:
- In the Outline window and select the Analysis Settings object.
- In the Details View window of Analysis Settings, click in the Numerical Damping field and type the 0 (zero).
- Run Solve.
