# Dynamic Analysis

Dynamic analysis is required for the following types of geomechanical problems:

- seismic (i.e., earthquake) loading;
- explosive or impulsive loading;
- mining problems involving seismic release of energy (i.e., rockbursts); and
- flow of particles (angular or rounded) under gravity.

The fundamental assumption in all cases is that time is relevant. In almost all cases, the time of interest is less than one minute; in the case of explosive or impulsive loading, it is less than one second.

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