Stiffness-mode optimization of cab based on joint sensitivity analysis
In this article,since the structural design of the joint for a commercial vehicle's cab is unreasonable,the stiff-ness-mode optimization of the cab is conducted based on the joint sensitivity analysis.Firstly,the required joint is intercepted from the cab's finite-element model.The finite-element analysis is conducted on the joint's mechanical properties,so as to find out the influencing factors of joint structure.Secondly,the joint sensitivity analysis in conducted with the elastic modulus as the design variable,so as to find out the joint which has great influence on the cab's stiffness and mode.Thirdly,the third-genera-tion-genetic-algorithm is used for multi-objective optimization.Finally,the TOPSIS algorithm is used to work out the scheme of cab mode-stiffness optimization,which is more line with user preference from the Pareto front.The results indicate that the cab's stiffness and mode greatly improve when the condition of the cab's mass remains unchanged.
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