Finite Element Model Updating Method of Airdrop Airbag

doi:10.3969/j.issn.1000-1093.2015.04.025

Abstract

Abstract: The finite element model of airdrop airbag should be updated to improve it simulation accuracy. Finite element model of payload-airbag is established. The sensitivity of the model parameters to the cushion characteristics of airbag is analyzed, and the coefficient of friction between airbag and ground and the flow coefficient of airbag are selected as the parameters to be modified. The response surface models of impact response vs. friction and flow coefficients are established. Based on the response surface models, the optimal solution is solved by genetic algorithm. The result indicates that the finite element model updating of airdrop airbag is efficient through the comparison of the simulated results before and after updating and the test results.

Key words: ordnance science and technology, airdrop airbag, finite element, response surface method, model updating

CLC Number:

V244.1⁺1

LI Jian-yang， WANG Hong-yan， RUI Qiang, HONG Huang-jie, ZHANG Fang. Finite Element Model Updating Method of Airdrop Airbag[J]. Acta Armamentarii, 2015, 36(4): 752-757.

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