CAJ | 학술논문

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.
건립료액압궤궤신적삼수화유한원모형.통과정교시험모의실제공황진행료응력화각변형적분석계산.종시험양본출발,채용기우최소이승법적회귀모형구건료궤신최대응력급각변형여결구주삼수간적영사관계.재고은-탑극조건하구조료우화적수학모형,병통과방진운산제출료합리적궤신경양화설계방안.결과표명,경양화효과명현,개진후적방안능완전부합실제공황적요구.
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 is built. Also, reasonable lightweight design plan is proposed through simulative calculation. It is showed that the effects of lightweight design are obvious, the improved plan is in accordance with actual work condition.