鸟体本构模型参数反演Ⅱ:模型参数反演研究

doi:CNKI:11-1929/V.20110328.1426.001

Abstract

Abstract: In order to determine the parameter value of the bird constitutive model in simulation, an optimization inversion method of constitutive model parameters of striking body materials is presented by using PAM-CRASH integrated with iSIGHT in the paper. The correctness of optimization inversion method of parameters is verified by a sample of projectile body striking on rigid plate. For three kinds of common constitutive model of bird materials that are used for different striking velocities, three groups of parameters of bird constitutive model are obtained using the optimization inversion method combined with the experimental results of bird striking on plate. A large number of numerical simulations on the bird striking on plate are made using the optimized parameters, and the simulation results are compared with experimental results. The good agreement between them indicates that the constitutive model parameters of bird materials optimized in the present paper are reasonable and reliable.

Key words: bird striking, constitutive model, numerical simulation, optimization inversion, iSIGHT

CLC Number:

LIU Jun, LI Yulong, SHI Xiaopeng, LIU Yuanyong. Parameters Inversion on Bird Constitutive Model PartⅡ: Study on Model Parameters Inversion[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(5): 812-821.

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Parameters Inversion on Bird Constitutive Model PartⅡ: Study on Model Parameters Inversion

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