圆管绕弯壁厚变化的数值模拟研究  

Numerical simulation of wall thickness change in tube bending

作　　者：徐小兵[1] 官强[2] 

机构地区：[1]长江大学机械工程学院,湖北荆州434023 [2]中国石化江汉石油管理局第四石油机械厂,湖北荆州434024

出　　处：《锻压技术》2010年第6期133-136,共4页Forging & Stamping Technology

摘　　要：应用有限元软件ABAQUS对圆管绕弯成形过程进行数值模拟,研究了相对弯曲半径R/D、摩擦条件及弯曲角度对弯管壁厚变化的影响规律。研究结果表明:随着R/D值的增加,弯曲外侧最大壁厚减薄率和弯曲内侧最大壁厚增厚率都呈下降趋势;随着摩擦系数的增大,管弯曲外侧壁厚变薄率、弯曲内侧壁厚增厚率都迅速增大;弯曲角度越大,壁厚减薄率和增厚率也越大。实验验证表明,模拟结果与实验结果基本一致。Using simulation software ABAQUS,the tube bending process was simulated.The effects of relative bending radius R/D,friction condition and bending angle on the change of wall thickness were researched.The results indicate that with the increase of relative bending radius,the thinning-rate of wall thickness in the outer side of tube and the thickening-rate of wall thickness in the inner side of tube trend to decrease.With the increase of the friction coefficient,the thinning-rate of wall thickness in the outer side of tube and the thickening-rate of wall thickness in the inner side of tube will increase rapidly.The bending angle is larger,the thinning-rate and the thickening-rate of wall thickness are greater.By experiments,the result is basically consistent between numerical simulation and experiment.

关 键 词：绕弯成形 数值模拟 壁厚变化 

分 类 号：TG386.3[金属学及工艺—金属压力加工]