Lightweight design of ATV truss body based on mechanical performance safety
Aiming at the safety and lightweight requirements of all-terrain vehicle(ATV)truss body,a lightweight method of collaborative static and dynamic mechanical properties was proposed to carry out the lightweight design of the ATV truss body.The body structure's static and dynamic mechanical properties were obtained by finite element analysis,and the lightweight optimization model of the ATV truss body based on mechanical performance safety was established.Combined with sensitivity analysis and main effect analysis,the key design variables of the truss body were extracted,the sample points of lightweight design were obtained by experimental design,and the least square method(LSR)-radial basis function(RBF)hybrid surrogate model was constructed.The lightweight optimization strategy of collaborative static and dynamic mechanical properties was proposed,and the lightweight design scheme of ATV truss body was optimized by sequential quadratic programming(SQP)algorithm.The results show that the method can effectively reduce the mass of ATV truss body by 3.82%under the condition of ensuring static and dynamic mechanical properties.
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