【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%。更多还原

【Abstract】 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 KIc 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%.更多还原