Sensitivity of springback and section deformation to process parameters in rotary draw bending of thin-walled rectangular H96 brass tube  

H96黄铜薄壁矩形管绕弯回弹和截面畸变对工艺参数的敏感性(英文)

作　　者：朱英霞[1] 刘郁丽[1] 杨合[1] 

机构地区：[1]西北工业大学材料科学与工程学院,凝固技术国家重点实验室,西安710072

出　　处：《Transactions of Nonferrous Metals Society of China》2012年第9期2233-2240,共8页中国有色金属学报（英文版）

基　　金：Project (50975235) supported by the National Natural Science Foundation of China;Project (B08040) supported by the 111 Project

摘　　要：In order to study the effects of the process parameters on springback and section deformation, a sensitivity analysis model was established based on the combination use of the multi-parameter sensitivity analysis method and the springback/section deformation prediction finite element model, and by using this model the sensitivities of the springback and the section deformation to process parameters were analyzed and compared. The results show that the most sensitive process conditions for springback angle are the boost speed and the pressure of pressure die, and the most sensitive process condition for section deformation is the number of cores. When the clamp force, the boost speed and the pressure of pressure die are utilized to control section deformation, the effect of these process parameters on springback should be considered. When the process parameters are mainly used to control springback, the effect of these process parameters on the section deformation should be always considered.为了研究工艺参数对回弹和截面畸变的作用,结合多参数敏感性分析法和回弹/截面畸变预测三维有限元模型,建立敏感性分析系统模型,并利用此模型研究回弹和截面畸变对工艺参数的敏感性。结果表明:回弹最敏感的工艺条件是助推速度和助推压力,截面变形最敏感的工艺条件是芯头的个数;当夹紧力、助推速度与助推压力被用来控制绕弯过程的截面畸变时,必须同时考虑这些参数对回弹的影响;在任何情况下利用工艺参数控制绕弯过程回弹都必须同时考虑截面畸变。

关 键 词：thin-walled rectangular H96 brass tube rotary draw bending sensitivity analysis SPRINGBACK section deformation 

分 类 号：TG306[金属学及工艺—金属压力加工]