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《Material Science and Technology》 2004-04
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FEM numerical analysis of springback law of NC tube bending

ZHAN Mei, YANG He, LI Zhen-bin(Department of Materials Forming and Control, College of Materials Science & Engineering, Northwestern Polytechnical University, Xi'an 710072, China,)  
The springback occurs consequentially after unloading which acutely reduces the efficiency of tube bending production. In order to study on the influence of parameters on sprinback angle of bent tube, first a FEM model for tube bending has been established using the elasto-plasticity FEM software of ANSYS, then it has been validated by applying it to the bending simulation of the stainless steel tube and by comparing the results with those from experiment, last the springback laws of some process and material parameters have been analyzed. The results show that: the springback angle of bent tube increases with the bending angle, the gap between mandrel and tube, and the hardening coefficient, but decreases with the hardenability value.
【Fund】: 国家杰出青年基金资助项目(50225518);; 国家自然科学基金资助项目 (50 1 750 92 ) ;; 高等学校优秀青年教师科研奖励计划资助项目 ;; 陕西省自然科学基金资助项目(2 0 0 2E2 2 3 ) ;; 西北工业大学英才培养计划资助项目
【CateGory Index】: TG305
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