摘要
建立了液压机机身的参数化有限元模型。通过正交试验模拟实际工况进行了应力和角变形的分析计算。从试验样本出发,采用基于最小二乘法的回归模型构建了机身最大应力及角变形与结构主参数间的映射关系。在库恩-塔克条件下构造了优化的数学模型,并通过仿真运算提出了合理的机身轻量化设计方案。结果表明,轻量化效果明显,改进后的方案能完全符合实际工况的要求。
The parametric finite element model of hydraulic pressure (HP) is built. Also, orthogonal experiment is used to simulate actual work condition for calculating stress and angular distortion. Using data from related experiments, the linear relation between HP’s main structural parameters and its maximal stress, maximal angular distortion and weight is get according to the regression model. The regression model is established based on least square method. Under Kurd-Tark condition, the optimal mathematic model...
出处
《工程图学学报》
CSCD
北大核心
2010年第1期20-25,共6页
Journal of Engineering Graphics
基金
国家科技攻关计划资助项目(2005BA201A83-01)
合肥市重点科研资助项目(2007(1007))
关键词
计算机应用
轻量化设计
最小二乘回归
液压机机身
computer application
lightweight design
least square method
hydraulic pressure
