Springback of thin-walled tube NC precision bending and its numerical simulation

来源期刊:中国有色金属学报(英文版)2006年第z1期

论文作者:谷瑞杰 杨合 詹梅 李恒

文章页码:631 - 638

Key words:thin-walled tube; NC bending; precision forming; springback; simulation

Abstract: The springback is one of the key factors which affect the forming quality of thin-walled tube NC precision bending. The elastic-plastic finite element method was proposed to study the springback process of thin-walled tube NC precision bending and the combination of dynamic explicit algorithm and the static implicit algorithm was proposed to solve the whole process of thin-walled tube NC precision bending. Then, the 3D elastic-plastic finite element model was established based on the DYNAFORM platform, and the model was verified to be reasonable. At last, the springback rule of thin-walled tube NC precision bending and the effect of geometry and material parameters on the springback rule of thin-walled tube NC precision bending were studied, which is useful to controlling the springback of thin-walled tube NC precision bending, and the numerical simulation method can be used to study other effect of parameters on the forming quality of thin-walled tube NC precision bending.

基金信息:the National Natural Science Foundation of China
the Aeronautical Science Foundation of China

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