连杆裂解加工力参数数值分析  

Numerical simulation of splitting force of connecting rod fracture splitting

作　　者：张志强[1] 金文明[2] 杨慎华[2] 赵勇[2] 郑祺峰[2] 

机构地区：[1]吉林大学材料科学与工程学院,长春130022 [2]吉林大学辊锻研究所,长春130022

出　　处：《吉林大学学报（工学版）》2009年第4期959-963,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50375066);国家科技攻关计划东北专项项目(2004BA907A19-1)

摘　　要：为了确定合适的连杆裂解工艺中裂解力参数,采用数值分析的方法建立了53d斜切口连杆裂解加工的数值模型。对裂纹尖端的节点采用了1/4节点技术用于模拟裂纹尖端应力场的奇异性,分析得到了裂解力与应力强度因子的关系曲线。根据连杆材料的临界应力强度因子KIc,确定了连杆裂解加工所需的裂解力。结果表明：裂纹1的裂解力为851 kN,裂纹2的裂解力818 kN。与实际生产中的裂解力860-880 kN相比,其误差小于10%。In order to obtain the splitting force for the connecting rod fracture splitting, a numerical model was established for the fracture splitting of the oblique split connecting rod 53d using the method of numerical analysis. The 1/4 node technique was used to the node at the crack pointed end to simulate the singularity of the stress field at the crack end, and a relation curve between the splitting force and the stress intensity factor K1c was obtained. The calculated splitting force is 818-851 kN, and the discrepancy against the practical value of 860-880 kN in production is below 10%.

关 键 词：材料合成与加工工艺 连杆 裂解加工 裂解力 数值分析 

分 类 号：TG316[金属学及工艺—金属压力加工]