Motion of Transverse Shock Tester Guided by Parallelogram Mechanism

摘要

The transverse shock tester is an important device to assess the shock resistance ability of ship equipments. Because of the shock point and the gravity center of the tester are not on the same horizontal, the device may generate huge overturning moment. We adopt the finite element method to do the dynamics analysis of the transverse shock tester, using the parallelogram mechanism as its guide device, to analysis its output waveform and other problems, and find: it will appear saw-tooth acceleration waveform result from the oscillation caused by the overturning moment during the impact process; the oscillation will greatly increases the hinge load - changed following the oscillation amplitude periodically - of the parallelogram mechanism; the hinge inner friction almost has no effect on the impact tester movement or the output waveform. From the above statements, we can see that the parallelogram mechanism can not only share the overturning moment generated by the transverse impact, but also can ensure to get the desired output waveform, thus it suits to be used as the guide device of the transverse shock tester.