摘要
针对黄芪揉搓机在设计过程中揉搓机构强度和刚度不能满足设计要求的问题,采用一种结合灵敏度分析与响应面模型的多 目标优化设计方法,基于ANSYS WorkBench软件对机构进行静力分析,并以关键零部件尺寸参数为设计变量,应力和变形量为目标函数进行响应面多 目标优化设计,得出最优参数组合.优化后的静力分析表明:机构最大变形量为0.303 mm,最大应力为40.356 MPa,强度和刚度均满足设计要求.试验结果表明,优化后的零件使得整个揉搓机构的变形量减少了24.67％,最大应力减小了69.32％,进一步证明了运用响应面法多目标优化,对曲柄滑块揉搓机构进行优化设计可行且有效.
Abstract
For astragalus kneading machine in the design process of the kneading mechanism strength and stiffness can not meet the design requirements of the problem,a multi-objective optimal design method combining sensitivity analysis and response surface modelling was adopted.Based on ANSYS WorkBench software,the mechanism was subjected to static analysis and response surface multi-objective optimisation design was carried out with the dimen-sional parameters of the key components as design variables and the stresses and deformations as objective functions to derive the optimal parameter combinations.The static analysis after optimisation shows that the maximum deforma-tion of the mechanism was 0.303 mm,the maximum stress was 40.356 MPa,and the strength and stiffness meet the design requirements.The test results show that the optimised part reduces the deformation of the whole kneading mechanism by 24.67％and the maximum stress by 69.32％.The feasibility and effectiveness of using response surface methodology multi-objective optimisation to optimise the design of this crank-slider kneading mechanism are demonstrated by the results.
基金项目
2022年现代丝路寒旱农业科技支撑项目(GSLK-2022-12)
甘肃农业大学自列课题(GSAU-ZL-2020-03)
伊犁职业技术学院科技计划项目(yzyxm2024012)
维普
万方数据