三台阶轴内高压成形中轴向补料的有限元分析  

FEA of axial supplement in hydroforming three-diameter shaft

作　　者：李洪洋[1] 苑世剑[2] 王小松[2] 苗启斌[2] 王仲仁[2] 

机构地区：[1]上海交通大学塑性成形工程系,上海200030 [2]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001

出　　处：《材料科学与工艺》2006年第4期393-396,399,共5页Materials Science and Technology

基　　金：国家自然科学基金资助项目(59975021)

摘　　要：为研究内高压成形台阶轴过程中轴向补料参数对工艺的影响，利用大变形非线性塑性有限元方法对内高压成形三台阶轴工艺进行了分析，讨论了补料量在理论值的80％～120％变化时零件的壁厚及应变分布规律，并就其成因进行了讨论．研究表明，补料量低于理论值的90％及高于理论值的110％是轴向补料参数选取的危险区间，容易引起折叠或破裂失稳，按照理论计算值进行轴向补料，壁厚及应变分布最为理想。To explore the influence of axial supplement on hydroforming three-diameter shaft, in this paper FEM was adopted in simulating the procedure. The thickness distribution and strain distribution from 80% to 120% of theoretical valuation was discussed and the reason of the difference of the simulation result was analyzed. Base on discussion, corresponding experimental result was also presented. The analysis shows that for the three-diameter shaft of this paper, the axial supplement lower than 90% theoretical valuation and over the 110% theoretical valuation is dangerous region of parameter selection, apt to generate destabilization, 100% theoretical valuation is the best axial supplement parameter.

关 键 词：内高压成形 台阶轴 轴向补料 有限元 

分 类 号：TG301[金属学及工艺—金属压力加工] TG394