紫铜三通管轴压胀形数值模拟及验证  

Simulation and validation of axial force and internal pressure bulging process for copper tri-branch tube

作　　者：张彦敏[1] 宋志真[1] 贺俊光[2] 孙爱学[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471003

出　　处：《锻压技术》2008年第4期136-139,共4页Forging & Stamping Technology

摘　　要：采用弹塑性变形理论分析了紫铜三通管轴压胀形过程中单位胀形力、轴向载荷及平衡力的计算,分析了支管平衡力对成形质量的影响,制定了胀形过程的轴压进给量;建立三通管轴压胀形三维弹塑性有限元模型,分析成形工艺特点,获取合理的工艺参数和模具结构;然后在自行研制的30 t轴压胀形试验机上进行工艺试验验证,并对试件进行分析。结果表明,理论分析、有限元数值模拟和试验结果相吻合。Based on the theory of plasticity, the internal pressure, axial force and balance force of bulging in the copper tri-branch tube forming process were studied. The influence of balance force in branch tube was analyzed and the axial feed was obtained. The finite element model of axial force and bulging process for copper tri-branch tube was set up. Through the simulation the reasonable parameters and die structure were found. According to the reasonable parameters experiment was done in the independently-established 30 ton test machine. The result shows that experiment consistent with theory analysis and numerical simulation.

关 键 词：紫铜 三通管 轴压胀形 数值模拟 

分 类 号：TG306[金属学及工艺—金属压力加工]