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| Analysis and Test Verification of Typical Structural Vibration Response of Internal Weapon Bay |
| Received:June 25, 2018 Revised:September 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.09.008 |
| KeyWord:internal bay vibration response vibration test |
| Author | Institution |
| SHEN Zhong |
Shenyang Aircraft Design & Research Institute, Shenyang , China |
| WANG Hu-yin |
Shenyang Aircraft Design & Research Institute, Shenyang , China |
| ZHAO Bin |
Shenyang Aircraft Design & Research Institute, Shenyang , China |
| CHEN Zhong-ming |
Shenyang Aircraft Design & Research Institute, Shenyang , China |
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| Abstract: |
| Objective To improve the internal bay of stealth aircraft and increase its service life in the environment of vibration and extremely high noise caused by the strong disturbance of air flow. Methods A typical structure of internal bayd was selected for random vibration response analysis. According to the result of the analysis; the location of the acceleration sensor and the strain sensor was determined; and the vibration test of the ground vibration station was verified. Results The result of frequency calculation was close to the result of sweep frequency. The maximum error of acceleration and test result was 23.2%. The average error of stress calculation and experimental results was basically less than 20%. Conclusion No destructive phenomena such as visual inspection cracks is found in the test before and after the test, and the required anti vibration ability was achieved. The results show that the reinforced structure adopted in the internal bay is reasonable, and the FEM calculation results can meet the accuracy requirement of dynamic strength in engineering. |
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