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MESYS Calculation Software

This element dynamic_forceallows the user to consider harmonic loads (moments or forces) on a shaft according to: all_img44. A factor h is multiplied to the shaft rotation frequency. In case that the frequency is not dependent on the shaft speed, then it can be manually specified by checking the box next to the "Frequency" at the software dialog. A phase shift can be defined for the force as well.

The dynamic force will only affect the results for the harmonic response. Bearing life, contact stress or safety factors for shaft strength will not change. Setting the option Consider dynamic loads in static equlibrium will lead to a change of bearing life or safety factors, but this is an approximation only.