Affiliation:
1. Department of Mechanical Engineering, Columbia University, New York, NY 10027
Abstract
Laser bending of tubes is a process in which laser-induced thermal distortion is used to bend tubes without hard tooling or external forces. Mechanisms of the process are examined to better understand the deformation characteristics such as wall thickness variation, cross-section ovalization, bending radius, and asymmetry. Factors important to these characteristics are experimentally and numerically investigated. Temporal and spatial distributions of temperature and stress/strain obtained from experimentally validated simulation models are also used to better understand additional phenomena accompanying the process, and to help devise ways to improve the process such as reducing asymmetry. A closed-form expression for the bending angle is proposed.
Subject
Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering
Reference14 articles.
1. Kervick, R. J., and Springborn, R. K., 1966, “Cold Bending and Forming Tube and Other Section,” ASTME, Michigan.
2. Karman, Th. V.
, 1911, “Uber die Formanderung Dunnwandiger Rohre, Insbesondere Federnder Ausgleichsrohre,” Z. Ver. Deit. Ing.,55, pp. 1889–1895.
3. Brazier, L. G.
, 1927, “On Flexure of Thin Cylindrical Shell and Other Thin Sections,” Proc. R. Soc. London, Ser. A, 116, pp. 104–14.
4. Zhang, L. C., and Yu, T. X., 1987, “An Investigation of the Brazier Effect of a Cylindrical Tube Under Pure Elastic-Plastic Bending,” Int. J. Pressure Vessels Piping, 30, pp. 77–86.
5. Wierzbicki, T., and Sinmal, M. V., 1997, “A Simplified Model of Brazier Effect in Plastic Bending of Cylindrical Tubes,” Int. J. Pressure Vessels Piping, 71, pp. 19–28.
Cited by
53 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献