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| Characteristics of Test Specimen and Fixture |
| Received:October 15, 2012 Revised:March 01, 2013 |
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| DOI： |
| KeyWord:random vibration test dynamic characteristics fixture force estimation |
| Author | Institution |
| LIU Qing-lin |
Institute of Systems Engineering, China Academy of Engineering Physics，Mianyang，China |
| ZHU Xue-wang |
Institute of Systems Engineering, China Academy of Engineering Physics，Mianyang，China |
| ZHANG Si-jian |
Institute of Systems Engineering, China Academy of Engineering Physics，Mianyang，China |
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| Abstract: |
| The influence of first order frequency of test specimen and fixture on the force of shaking table was analyzed. A method considering first order frequency of test specimen and fixture was put forward in order to estimate the force of shaking table during a random vibration test. The relationship between the force of shaking table and the first order frequencies of test specimen and fixture was obtained through simulation method. The accuracy of the method was proved by an application example. Compared with the traditional rigid assumptions method, this method is more close to the actual, and it can be reference of vibration test design for large-scale specimen. |
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