Cross-sectional distortion behaviors of thin-walled rectangular tube in rotary-draw bending process
| Autor: | Gangyao Zhao, Yuli Liu, Cai-hong Lu, He Yang |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
business.industry Plane (geometry) Metals and Alloys Process (computing) Bend radius Structural engineering Bending Geotechnical Engineering and Engineering Geology Condensed Matter Physics Physics::Fluid Dynamics Position (vector) Distortion Materials Chemistry Cylinder stress Tube (container) Composite material business |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 20:484-489 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(09)60166-7 |
| Popis: | The cross-sectional distortion usually appears during rotary-draw bending process of thin-walled rectangular tube with small bending radius. To study the cross-sectional distortion of the tube, a three-dimensional finite-element model of the process was developed based on ABAQUS/Explicit code and its reliability was validated by experiment. Then, the cross-sectional distortion behaviors of the tube were investigated. The results show that a zone of larger circumferential stress appears on the tube when bending angle reaches 30°. And in the larger circumferential stress zone, the sagging phenomenon is produced obviously. The maximum cross-sectional distortion is located in the larger circumferential stress zone and the angle between the plane of maximum cross-sectional distortion and the bending reference plane is about 50°. The position of the maximum cross-sectional distortion keeps almost unchanged with the variation of the clearances between dies and tube. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect