Optimization design of bolt tensioner cylinder body based on response surface methodology
Bolt stretcher is a commonly used tool for pre tightening large-sized bolts,and its failure often occurs at the stress concentration of the cylinder body.To ensure its strength,in theoretical design,the size design margin is increased to ensure its safety.This will lead to increase the volume of the cylinder body,and thus it is necessary to optimum design of the cylinder body.However,traditional design methods are time-consuming and laborious.This article constructs a three-dimensional model of the cylinder body and conducts static finite element analysis.Then,the sizes of the cylinder body are parameterized by Solidworks and Ansys joint simulation,and key parameters that affect optimization objectives are screened out using parameter sensitivity.These parameters are used as input parameters for experimental design,after selecting sample points through optimal space filling design,fitting the response surface using Kriging method,and finally the optimal solution are obtained by multi-objective optimization algorithm.Kriging method is used to fit the response surface,and finally multi-objective optimization algorithm is applied to find the optimal solution.The optimization results show that the optimized structure meets the strength requirements,fatigue design requirements,and reduces quality by 10.7%.The optimal experimental method for optimizing the response surface of the cylinder block is also found,it provides a certain reference value for the lightweight design of the bolt tensioner cylinder block.
国家科技期刊平台
NSTL
万方数据
