Time Step Integration on a Frame Construction

The calculation for an actual earthquake (El Centro, 1940) is demonstrated based on the following frame construction.

The acceleration spectrum that was recorded back then is transferred to the system, and a time step integration with 800 steps per 0.05 seconds is calculated.

After the calculation, the deformation, velocity, and acceleration as well as all internal forces of the system are available for each time step.
These values can be visualized or e.g. used for a reinforced concrete design.

Progression of the bending moment at a support location

System deformation

Load the animation of the 1st eigenmode (294 KB).