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| Design and Dynamic Analysis of Vibration Test Expansion Table |
| Received:January 01, 2020 Revised:February 14, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.07.016 |
| KeyWord:plate-type fixture bowl-type fixture modal analysis dynamic test optimal design |
| Author | Institution |
| WANG Yi |
China Aerospace Science & Industry Corporation Defense Technology R&T Center, Beijing , China |
| PANG Jia-zhi |
China Aerospace Science & Industry Corporation Defense Technology R&T Center, Beijing , China |
| YANG Shi-chao |
China Aerospace Science & Industry Corporation Defense Technology R&T Center, Beijing , China |
| MA Lu-jun |
China Aerospace Science & Industry Corporation Defense Technology R&T Center, Beijing , China |
| OUYANG Hong-yu |
China Aerospace Science & Industry Corporation Defense Technology R&T Center, Beijing , China |
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| Abstract: |
| The paper aims to verify advantages and disadvantages of bowl-type and plate-type tooling structure in dynamic test. When the dynamic tests such as vibration, shock, acceleration, etc. were performed on missile cabin, it can not be directly installed on the mesa structure. Therefore, it is necessary to design and optimize the tooling for fixed installation. In this paper, the tooling for test of missile cabin was designed, and the frequency and vibration mode of the first six modes were obtained by FEM simulative analysis to discriminate the advantages and disadvantages of the bowl-type and plate-type structural design method. Meanwhile, the structure of the designed tooling was optimized to obtain the effect of stiffeners on modal parameters. The frequency of bowl-type structure in each order with the same quality was higher than that of plate-type structure. The optimization method of stiffener structure increased the frequency of the first three modes of bowl-type structure by about 25%. The bowl-type fixture structure can effectively transmit the mechanical signal and ensure the uniformity of signal transmission. The stiffener structure can effectively enhance the dynamic performance of the tooling structure |
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