Browse Publications Technical Papers 2019-01-1525

Blocked force determination on an engine cover 2019-01-1525

Blocked force determination is an alternative to the more customary method of using transfer path analysis to determine inverse forces. The primary advantage of the approach is that the source does not need to be detached from the machine. Results are valid so long as the source and machine are intact and the blocked forces are determined at the interface between the source and machine. In this research, an engine cover considered as receiver is bolted on a plastic source plate and electrical shaker is used to excite the plastic plate. Blocked forces are calculated on the bolts between engine cover and plastic plate and virtual blocked forces are also calculated on a virtual interface on engine cover. The accuracy of calculated blocked forces is assessed by comparing the predicted and simulated responses at selected receiver points which were not used for the inverse force analysis.


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