Temperature Field Simulation in Laser-assisted Micro-bending
Engineering application of micro-bending to the forming of metallic micro-parts can be limited by the size effects arising from the minimization and material properties, especially for the hard-todeform material. These problems can be accomplished by laser-assisted heating the workpiece as the temperature is one of the most important factors affecting the product quality during the microbending process. At the increased temperature through laser heating method in the forming areas of the workpiece, the resistance to deformation of the material can be reduced while the material flow homogeneity and formability can be improved. Numerical simulation was conducted using finite element code ABAQUS to obtain the temperature distribution of U-shape micro-bending. A new approach for local heating the forming areas of U-shape microparts was proposed. In the proposed approach, the forming zones of the workpiece were scanned and heated by the use of dual-beam laser at the same time. The simulations were performed to reveal the influence of laser parameters including the laser power, scanning speed and spot radius on the temperature distribution of U-shape micro-parts, providing the basis for subsequent laser-assisted forming U-shape micro-parts. Simulation results show that the temperature of heated zones increased with the increase of laser power while decreased with the increase of scanning speed, and a desired uniform temperature distribution is available if greater spot radius is used. The higher laser power enables the increase of the temperature difference between the upper and lower surfaces, while the laser scanning speed has little influence on it.
Micro-bending Laser-assisted heating Temperature field Numerical simulation
WANG Yun WU Jiangping XU Zhenying Yin Bifeng Wang Rongmao Ding Sheng
School of Mechanical Engineering, Jiangsu University, Zhenjiang, China
国际会议
The Third International Conference on Modelling and Simulation(第三届国际建模、计算、仿真、优化及其应用学术会议 ICMS 2010)
无锡
英文
195-198
2010-06-04（万方平台首次上网日期，不代表论文的发表时间）