航空学报 > 2011, Vol. 32 Issue (5): 812-821   doi: CNKI:11-1929/V.20110328.1426.001

鸟体本构模型参数反演Ⅱ:模型参数反演研究

刘军, 李玉龙, 石霄鹏, 刘元镛   

  1. 西北工业大学 航空学院, 陕西 西安 710072
  • 收稿日期:2011-06-21 修回日期:2010-09-06 出版日期:2011-05-25 发布日期:2011-05-19
  • 通讯作者: Tel.:029-88494859 E-mail: liyulong@mail.nwpu.edu.cn E-mail:liyulong@mail.nwpu.edu.cn
  • 作者简介:刘军(1979- ) 男,博士,博士后。主要研究方向:冲击动力学及数值模拟。 Tel: 029-88494859 E-mail: liujun_top@126. com 李玉龙(1961- ) 男,博士,教授,博士生导师。主要研究方向:冲击动力学及动态破坏分析。 Tel: 029-88494859 E-mail: liyulong@mail.nwpu.edu.cn
  • 基金资助:

    国防科技工业民用专项科研技术研究项目

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

LIU Jun, LI Yulong, SHI Xiaopeng, LIU Yuanyong   

  1. School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China
  • Received:2011-06-21 Revised:2010-09-06 Online:2011-05-25 Published:2011-05-19

摘要: 为获得数值模拟中鸟体本构模型参数,提出了iSIGHT集成PAM-CRASH2006确定撞击体本构模型参数的优化反演方法,利用弹体撞击刚性平板算例验证了该参数优化反演方法的正确性。针对常见的适用于不同撞击速度的鸟体3种本构模型,结合鸟撞平板试验结果优化反演得到了3套鸟体本构模型参数。利用优化反演得到的鸟体本构模型参数进行了大量鸟撞平板数值模拟,并将模拟结果与试验结果进行了对比,二者良好的吻合性表明了本文优化反演得到的鸟体本构模型参数的合理性和可靠性。

关键词: 鸟撞, 本构模型, 数值模拟, 优化反演, iSIGHT

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

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