Research on the Working Mechanism of Repetitive Shock Machine and Electro-Dynamic Shaker
In order to better apply the repetitive shock machine and meet the high reliability development and rapid screening requirements of subsequent products,this paper uses a certain repetitive shock machine and an electro-dynamic shaker to collect the time-domain signals of the two devices by using the data acquisition system,and carries out the frequency domain analysis.At the same time,the relationship between the monitoring root-mean-square value,the control root-mean-square value,the intake volume and the comprehensive adjustment parameters is also measured.The results show that although the repetitive shock machine can achieve three-direction simultaneous vibration,the root-mean-square acceleration values of the three directions are different,and the root-mean-square acceleration values of the X and Y directions are(60～70)%of the Z directions.Unlike the electro-dynamic shaker,the time-domain acceleration of which less than 3 times of the root mean square accounts for about 99%,the time-domain acceleration of the repetitive shock machine greater than 3 times the root mean square value accounts for about 25%;There is a quantitative relationship between monitoring root-mean-square value and control root-mean-square value and comprehensive adjustment parameters of repetitive shock machine.The above research results can provide theoretical basis for the application of repetitive shock machine and the subsequent model product test.
NETL
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