The lightweight design of automobiles is an important way to achieve energy saving and emission reduction.In order to de-sign excellent performance aluminum alloy sandwich truck anti-skid pedal,research has been carried out on aluminum alloy sand-wich plates with different core layer structures;three types of I type,V type and U type have been established.A core layer structure of aluminum alloy sandwich panel structure model;the use of finite element method to analyze the stress and displacement values of three core layer structures of I-type,V-type and U-type aluminum alloy plates under actual working conditions,and based on gray correlation The method establishes a comprehensive performance evaluation function with quality,maximum deflection,and maxi-mum stress as variables,and obtains that the V-shaped aluminum alloy sandwich panel is the optimal structure;the upper,lower,and core layer thicknesses are the optimization variables,and the quality minimization is the optimization goal.The global response surface method and the feasible direction method are used to optimize the size of the V-shaped aluminum alloy plate,and the optimi-zation results are compared and analyzed.It is found that the optimization methods of the two methods have better optimization re-sults,but the iteration time based on the feasible direction method is longer.Shorter and more efficient,the weight of the optimized aluminum alloy plate is reduced by29.5%,which has good application value.
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