基于优化设计的门式卸车机结构可靠性分析
发布时间：2018-11-05 20:01
【摘要】：将优化设计与可靠性理论相结合进行门式卸车机的结构可靠性分析.利用ANSYS Workbench进行参数化实体建模,采用中心复合设计拟合响应面并进行参数灵敏度分析,在此基础上分别使用Screening,MOGA及NLPQL 3种算法对参数尺寸进行优化和对比分析,得到最佳设计方案,在保证满足强度要求的条件下,减小卸车机体积.再根据优化分析的结果,以最大等效应力不超过材料许用应力为可靠性评定指标,使用六西格玛分析技术比较模型优化前后的结构可靠性,优化后的结构可靠性有所提高.在分析结构轻量化问题的同时考虑了其安全可靠性要求,为卸车机的制造与优化改进提供了理论指导.
[Abstract]:The structural reliability analysis of the door unloader is carried out by combining the optimal design with the reliability theory. Parametric solid modeling is carried out with ANSYS Workbench, response surface is fitted by central composite design and parameter sensitivity analysis is carried out. On the basis of this, Screening,MOGA and NLPQL algorithms are used to optimize and compare the parameter size, respectively. The optimal design scheme is obtained, and the volume of the unloading machine is reduced under the condition of satisfying the intensity requirement. According to the results of optimization analysis, the maximum equivalent stress is not more than the allowable stress of the material as the reliability evaluation index, and the structural reliability before and after the optimization is compared by using six Sigma analysis technique, and the structural reliability after optimization is improved. The requirement of safety and reliability is taken into account when analyzing the structural lightweight problem, which provides theoretical guidance for the manufacture and optimization improvement of the unloading machine.
【作者单位】： 大连交通大学交通运输工程学院;大连交通大学机械工程学院;
【基金】：国家自然科学基金资助项目(11272070) 辽宁省自然科学基金资助项目(2014028020) 辽宁省教育厅科学研究资助项目(JDL2016001) 大连市科技开发资助项目(2015A11GX026)
【分类号】：TH24
本文编号：2313236
[Abstract]:The structural reliability analysis of the door unloader is carried out by combining the optimal design with the reliability theory. Parametric solid modeling is carried out with ANSYS Workbench, response surface is fitted by central composite design and parameter sensitivity analysis is carried out. On the basis of this, Screening,MOGA and NLPQL algorithms are used to optimize and compare the parameter size, respectively. The optimal design scheme is obtained, and the volume of the unloading machine is reduced under the condition of satisfying the intensity requirement. According to the results of optimization analysis, the maximum equivalent stress is not more than the allowable stress of the material as the reliability evaluation index, and the structural reliability before and after the optimization is compared by using six Sigma analysis technique, and the structural reliability after optimization is improved. The requirement of safety and reliability is taken into account when analyzing the structural lightweight problem, which provides theoretical guidance for the manufacture and optimization improvement of the unloading machine.
【作者单位】： 大连交通大学交通运输工程学院;大连交通大学机械工程学院;
【基金】：国家自然科学基金资助项目(11272070) 辽宁省自然科学基金资助项目(2014028020) 辽宁省教育厅科学研究资助项目(JDL2016001) 大连市科技开发资助项目(2015A11GX026)
【分类号】：TH24
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，本文编号：2313236
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