Volume 34 Issue 09
Sep.  2008
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Hu Zhendong, Huang Hai, Jia Guanghuiet al. Identification method for the material parameters of Al alloy under the condition of hypervelocity impact[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(09): 999-1002. (in Chinese)
Citation: Hu Zhendong, Huang Hai, Jia Guanghuiet al. Identification method for the material parameters of Al alloy under the condition of hypervelocity impact[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(09): 999-1002. (in Chinese)

Identification method for the material parameters of Al alloy under the condition of hypervelocity impact

  • Received Date: 02 Aug 2007
  • Publish Date: 30 Sep 2008
  • In the research of hypervelocity impact, how to identify the metallic material’s parameters under the extreme distortions and high strain rate is a key problem. Steinberg strength model and Gruneisen equation of state were selected to describe the characteristics of Al6061 under the condition of hypervelocity. The SPH algorithm was applied to simulate the hypervelocity impact. The error between the results of experiment and simulation was defined as the optimization objective and 4 parameters in Steinberg strength model were defined as optimization variables. Four parameters were identified automatically by successive response surface method(SRSM). The optimized parameters have a better simulation results than the initial parameters when comparing with the experiments results.

     

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