Optimal Design of Upper Beam of 60MN Compression-Shear Testing Machine Based on Response Surface Method
In response to the requirements of large load capacity,small deformation and light weight of the compression-shear testing machine,the upper beam of the 60MN compression-shear testing machine was optimized by combining the finite element analysis and the response surface method.First,the Latin hypercube sampling method is used to generate the experimental design sample points,and according to the design results,a variety of fitting methods are used to fit and verify the accuracy.It is found that the Krigingmethod can be accurately generated with the Latin hyper-legislative experimental design method.The experimen-tal points are matched,and the fitted response surface model is efficient and accurate;then the stress,quality,and deformation of the above beam are the optimization targets.and the multi-objective genetic algorithm is used to optimize the design to obtain the optimal solution.And through sensitivity analysis,the optimized results are modified to make it more valuable in engineering applications.The optimized structure after verification is 11.8%lighter than the original structure.The optimization effect is sig-nificant,which saves production costs.It has important practical significance for the structural optimization design of the com-pression-shear testing machine,and it also has other similar structures.Provide reference for optimization analysis of parts.
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