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《Acta Aeronautica et Astronautica Sinica》 2011-05
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Parameters Inversion on Bird Constitutive Model Part Ⅱ:Study on Model Parameters Inversion

LIU Jun,LI Yulong,SHI Xiaopeng,LIU Yuanyong School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China  
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.
【Fund】: 国防科技工业民用专项科研技术研究项目
【CateGory Index】: V222
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