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| Impact Response Analysis of Missile Sliding Blocks Connection Structure Based on Preload for Bolt |
| Received:April 26, 2024 Revised:July 16, 2024 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2024.11.008 |
| KeyWord:bolt sliding blocks bolt connection preload missiles impact response finite element model |
| Author | Institution |
| HUAN Guangzhou |
Shaanxi Zhongtian Rocket Technology Co., Ltd., Xi'an , China |
| HE Zhijie |
Shaanxi Zhongtian Rocket Technology Co., Ltd., Xi'an , China |
| ZHU Rui |
Xi'an Space Three Walter Mechanical and Electrical Equipment Co., Ltd., Xi'an , China |
| BAI Jing |
Shaanxi Zhongtian Rocket Technology Co., Ltd., Xi'an , China |
| XU Xiaoqiang |
Shaanxi Zhongtian Rocket Technology Co., Ltd., Xi'an , China |
| YANG Jiaojiao |
Xi'an Space Three Walter Mechanical and Electrical Equipment Co., Ltd., Xi'an , China |
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| Abstract: |
| The work aims to study the adaptability of the bolt connection structure to the impact environment, so as to solve the possible impact response issues between the specific model of the missile cabin section and the front slider under pre-tension. Firstly, based on the theory of bolted connections, the recommended preload and the minimum preload required ensuringthe structureintactness was calculated. Next, in order to verify the accuracy of the calculation model for bolted connection structures, the finite element analysis method was used, and the model was verified according to relevant standards. Subsequently, finite element simulations were conducted on the application of finite to three different front sliding blocks and cabin bolt connection structures, and the optimal connection structure configuration was found. Ultimately, the research focus shifted to the structural system of the entire missile and launch device. The results showed good consistency between the preload model of bolt and the experimental values, proving the accuracy of the selected parameters and model above mentioned. At the same time, the connection method of bolts and nuts could achieve the minimum stress level under the action of preload, so it was selected as the connection between the sliding blocks and the cabin section. In addition, bolts with a performance level of 12.9 could stand vertical impact loads. By analyzing the response of the system to vertical impact under preload, the adaptability of the sliding blocks connection structure under the combination of the spring frame to the impact environment in practical applications could be evaluated. This study provides a scientific basis for the design of this type of missiles, ensuring its reliability and safety in extreme impact environments, thereby improving overall combat effectiveness. |
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