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CAESAR II Users Guide

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CAESAR II
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CAESAR II Version
12

Provides the magnitude of the reactions for each load case. A typical entry is shown below.

NODE

FX

5

716

649

2X(1)

The first line for each node contains the maximum load that occurred at some time during the dynamic event. The second line for each node contains the maximum modal contribution to the load. The third line for each node tells the mode and loading that was responsible for the maximum. This form of the report permits easy identification of the culprit modes.

The mode identification line is broken down as follows:

2

X

(1)

mode

load direction

(load component)

For example, at node 5 the resultant dynamic load due to the shock was 716. The largest modal component (of the 716) was 649, due to mode 2, and produced by the first X direction component (either the first support motion set for displacement response spectrum analysis, or the first force set for force response spectrum analysis). This form of dynamic output report enables you to know if there is a problem. If there is a problem, it enables you to identify which mode of vibration and load component is the major contributor to the problem.

If the component shows up as a (P), then it was the pseudo-static (seismic anchor movement) contribution of the loading that resulted in the major component of the response. If the component shows up as an (M), it indicates a missing mass contribution. A typical restraint report is shown below.