Application of the three-dimensional SPH-FEM coupling method in the unlocking process of the explosion bolt

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (23) : 197-202.

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Application of the three-dimensional SPH-FEM coupling method in the unlocking process of the explosion bolt

Chu Wenhua1, Zhang Aman1, Ming Furen1, Yang Wenshan

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Abstract

Explosion Bolt is widely applied for separation process in the aerospace and weapon fields. The impact excitation generated in the explosion separation process can bring great damage to the surrounding structures, besides making them separated. Based on the hydrodynamic governing equations considering materials strength, three-dimensional models of the explosion bolt and the structure connected by it are built using SPH method and finite-element software, respectively. Multiple link-list searching technique and SPH-FEM coupling method are developed in the process. The unlocking process of the explosion bolt is simulated and the response characteristic of the structure under explosion impact excitation is studied.

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SPH / FEM / multiple link-list searching technique / explosion bolt / response characteristic

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Chu Wenhua;Zhang Aman;Ming Furen;Yang Wenshan . Application of the three-dimensional SPH-FEM coupling method in the unlocking process of the explosion bolt[J]. Journal of Vibration and Shock, 2012, 31(23): 197-202