摘要
利用有限元软件MSC.Marc/Mentat建立了薄壁铜管绕弯有限元模型,并对模型进行了实验验证。研究分析芯棒直径、芯棒伸出量及摩擦工艺参数对7.00mm×0.41mm×10mm(外径×壁厚×弯曲半径)薄壁铜管绕弯的截面畸变的影响。结果表明,截面畸变量随芯棒直径和伸出量的增大而减小,随摩擦系数的增大而增大,若摩擦系数较大时进行弯管,管材外侧易出现破裂。
A FEM of rotary draw bending of copper tube is established by MSC.Marc/Mentat,and the model size is 7.00mm×0.41mm×10.00mm（Outside diameter×Wall thickness×Bending radius）.The model is verified by experiments.The impact of mandrel diameter,mandrel extends and frictions on the variation of tube section distortion of rotary draw bending are studied using this model.The results indicate that the cross-sectional distortion amount is reduced with increases of mandrel diameter and the amount of extending.It increases when the coefficient of friction is bigger.The outside of tube is prone to rupture if it is bent when the coefficient of friction is greater.
出处
《沈阳理工大学学报》
CAS
2013年第4期77-81,共5页
Journal of Shenyang Ligong University
关键词
薄壁铜管
绕弯成形
截面畸变
数值模拟
thin-walled copper tube
rotary draw bending
section distortion
numerical simulation
