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| Impact Response of Thermal Protection System under Explosive Bolt Separation Procedure |
| Received:June 25, 2018 Revised:September 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.09.005 |
| KeyWord:explosive bolt fluid-structure interaction impact response |
| Author | Institution |
| CHEN Yan |
AVIC Chengdu Aircraft Design& Research Institute, Chengdu , China |
| JIN Wei |
AVIC Chengdu Aircraft Design& Research Institute, Chengdu , China |
| WANG Yong-yan |
AVIC Chengdu Aircraft Design& Research Institute, Chengdu , China |
| HUANG Hu |
AVIC Chengdu Aircraft Design& Research Institute, Chengdu , China |
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| Abstract: |
| Objective To obtain the impact response of TPS (Thermal Protection System) during the separation process of explosive bolt, to evaluate whether it may suffer from damage and sequentially affect flight safety, and to have numerical analysis on the process. Methods A four step numerical analysis program was held out. First, based on the MSC. Dytran software and fluid-structure interaction method, the process of explosive bolt separation was simulated. Afterwards, FEM and analysis according to the ground test of separation process was held out and the response curve of the structure was extracted. Then, parameters on explosive and JWL equation were adjusted according to the ground test, so a proper model of explosive bolt was obtained. Finally, this model was applied to analyze and assess the dynamics of impact response of explosive bolts in the separation process in real structure and TPS (Thermal Protection System). Results By means of parameter adjustment, the response result from the simulation model had great agreements with the test result, which certified the validity of the model and the feasibility of the four step program. Conclusion The maximum impact acceleration response obtained from the true structure during explosive bolt’s separation process could offer important reference for the design of TPS (Thermal Protection System). |
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