基于HS-DOE法的钢铝混合摩托车车架性能分析与优化

为了快速评估和提高新型钢铝混合摩托车车架的安全性能,以某款钢铝混合摩托车车架为研究对象,采用HyperMesh软件对其进行性能分析与优化.建立钢铝混合摩托车车架有限元模型,研究钢铝混合摩托车车架在水平载荷、垂直载荷和坐垫载荷3种工况下的最大应力和最大位移.提出一种以Hammersley采样方法改进传统试验设计方法的哈默...

The performance analysis and optimization of steel-aluminum hybrid motorcycle frame based on HS-DOE method

In order to quickly evaluate and improve the safety performance of the new steel-aluminum hybrid motorcycle frame,certain steel-aluminum hybrid motorcycle frame was considered as the research object,and its performance was analyzed and optimized by HyperMesh software.The finite element model of the motorcycle frame was established firstly and its maximum stress under three loading subcases of horizontal load,vertical load and cushion load,was extracted from the simulation results.Hammersley Sampling-Design of Experiment(HS-DOE)method was proposed to improve the traditional test design method by involving the Hammersley Sampling-Design of Experiment(HS-DOE)technique,in which the main section thickness of the frame was selected as the design variable,then its main effects on the maximum stress,maximum displacement,modal frequency and the frame mass were analyzed and sensitive design variables were determined by comparing their responses to the target.Based on this method,taking the frame strength and modal frequency as the constraints,and the maximum displacement of the cushion load condition as the optimization objective,multi-objective optimization design of the motorcycle frame structure was carried out using the OptiStruct solver.after which the optimization results were validated by simulation.The results shown that the HS-DOE method can create more uniform sample points.Under the premise of meeting the design requirements,the maximum stress of the motorcycle frame under the horizontal load condition was reduced by 41.44%,and the counterpart value under the vertical load condition was reduced.by 16.88%,while the frame mass was reduced by 1.88 kg,which was 10.23%less than the original front frame.