高速列车车厢壁异质金属曲面夹层板夹芯层力学性能及结构优化研究

Research on the mechanical performances and structural optimization of heterogeneous curved sandwich plate for high-speed train compartment wall

以夹芯层波纹板单元壁厚和波纹夹角作为变量,使用ANSYS静力结构分析软件计算异质金属曲面夹层板在静力作用下的弹性模量和弯曲挠度,并用响应面法对异质金属曲面夹层板进行多目标优化。结果表明:夹芯层随着波纹壁厚t的增大,力学性能综合比位移指标f1先减小后增大;在波纹壁厚较小时,综合比位移指标f1随着波纹顶角θ增大而增大;在波纹壁厚较大时,综合比位移指标f1随着波纹顶角θ增大而减小;波纹壁厚t为2.4mm、波纹顶角θ为80°时,夹芯层静力学性能最优。

Taking the thicknesses of sandwich and the corrugation angle as variables, it calculates the elasticity modulus and bending deflection of curved surface corrugated sandwich panel based on ANSYS, analyzes the response surface method for optimizing the multi-objective of heterogeneous curved sandwich plate.The result increases the comprehensive displacement ratio index of mechanical properties of the sandwich with the corrugated wall thickness, and also increases the comprehensive displacement ratio index with the corrugated corners increasing when corrugated thickness value is small, decreases the comprehensive displacement ratio index with the corrugated corners increasing when corrugated thickness value is large.The optimum structure of the sandwich is the corrugated thickness t is 2.4mm,the corrugation angle θ is 80°.