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| Design Modification of Unlocking Signal Output Device of Explosive Bolt |
| Received:March 30, 2024 Revised:June 26, 2024 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2024.08.013 |
| KeyWord:unlocking signal explosive bolt fault location virtual replay finite element simulation combined double-nut |
| Author | Institution |
| LI Weiwei |
Shanghai Electromechanical Engineering Institute, Shanghai , China |
| ZHANG Baogang |
Shanghai Electromechanical Engineering Institute, Shanghai , China |
| XU Bin |
Shanghai Electromechanical Engineering Institute, Shanghai , China |
| LIU Guang |
Shanghai Electromechanical Engineering Institute, Shanghai , China |
| XIA Jin |
Shanghai Electromechanical Engineering Institute, Shanghai , China |
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| Abstract: |
| The work aims to simulate the failure, locate the fault cause, and then put forward improvement schemes for the unlocking signal output device in the unlocking experiment of explosive bolts. A finite element model of the device was established with CREO software and ABAQUS software. The finite element calculation method was used to carry out dynamic simulation analysis. The high-speed operation process of the unlocking signal output device when the explosive bolt was unlocked was simulated. The stiffness and strength of the structure was evaluated, and the fault cause of the device was located. Based on the fault causes, a combined double-nut structure was proposed to improve the overall stress state of the unlocking signal output device and enhance the reliability of the structure under high impact load. Practical verification and effect evaluation were carried out through an explosive bolt unlocking test. The results show that the finite element calculation method can simulate the failure of the unlocking signal output device and the improved device structure is reasonable. |
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