Abstract
Heterogeneous metal sandwich plate is composed of high strength material face-sheets and low-density material core. In this paper, the crashworthiness property of the heterogeneous metal sandwich plate was investigated with combining the response surface method and finite element simulation. The specific absorption energy of sandwich plate is made as the crashworthiness performance index, and approximation written as a third-order function of the section parameters by means of the response surface method. According to the BB experiment design method, 29 groups of sandwich plate with different section structure parameters were selected and finite element numerical simulations were conducted to study on deformation behavior of sandwich plates during the collision process. Then, the coefficients of approximate specific absorption energy function were solved with regressive analysis. Consequently, the relationship between the crashworthiness performances of sandwich plate and the section parameters α, β, D, d was obtained.
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