驾驶室, 试验模态分析, 代理模型, 微型多目标遗传算法, 优化设计

Dynamic characteristics of the cab of a heavy commercial vehicle were analyzed using finite element mode analysis theory; it was proved to be right by the corresponding modal test. Some assembly thicknesses were chosen as design variables

using sensitivity analysis, and the optimization problem was built with torsion stiffness constrained, and the first order mode as well as lightweight designed.The surrogate models of radial basis function and micro multi-objective genetic algorithm were adopted,then model manage technique was used to update and strictly control the error from surrogates.

 At last, many non-dominated solutions with low errors were obtained, and many design schemes were offered. The first order mode is improved obviously and the weight is lighted.

cab, experiment modal analysis, surrogate model, micro multi-objective genetic algorithm, optimization design