| NUMERICAL INVESTIGATION OF STRAIGHT-LINE LASER FORMING UNDER THE TEMPERATURE GRADIENT MECHANISM |
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| 作者姓名： | Y.J. Shi H. Shen Z.Q. Yao J. Hu |
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| 作者单位： | School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200030, China |
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| 基金项目： | Acknowledgements-This work was supported by the Science ＆ Technology Department of Shanghai （No. 04dz11002）. The authors would also like to thank Profs. Xinmin Lai and Jun Ni for their helpful comments. |
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| 摘 要： | Laser forraing is a new flexible and dieless forming technique. To achieve the high accuracy forming, the temperature gradient mechanism （TGM） is studied. In the analysis of TGM, the plate bends about x-axis and about y-axis as well. To understand the deformation trend, the numerical simulation of deformation of plate is conducted by choosing different laser powers, laser spot diameters, scanning speeds, lengths, widths and thicknesses. From the results of simulation, it can be seen that the laser spot diameter, the scanning speed, laser power and thickness of plate play dominant roles in the laser forming process. However, the bending angles αx and αy show different trends with the variation of parameters. In addition, in comparison with above four parameters, the effect of length and width of plate on the beading angle may be neglected, but their effects are significant for the bending radius R.
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| 关 键 词： | 激光加工 金属板 温度梯度 数值模拟 |
| 收稿时间： | 2005-07-27 |
NUMERICAL INVESTIGATION OF STRAIGHT-LINE LASER FORMING UNDER THE TEMPERATURE GRADIENT MECHANISM |
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| Y.J. Shi H. Shen Z.Q. Yao J. Hu.NUMERICAL INVESTIGATION OF STRAIGHT-LINE LASER FORMING UNDER THE TEMPERATURE GRADIENT MECHANISM[J].Acta Metallurgica Sinica(English Letters),2006,19(2):144-150. |
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| Authors: | YJ Shi H Shen ZQ Yao J Hu |
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| Affiliation: | School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200030, China |
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| Abstract: | Laser forming is a new flexible and dieless forming technique. To achieve the high accuracy forming, the temperature gradient mechanism (TGM) is studied. In the analysis of TGM, the plate bends about x-axis and about y-axis as well. To understand the deformation trend, the numerical simulation of deformation of plate is conducted by choosing different laser powers, laser spot diameters, scanning speeds, lengths, widths and thicknesses. From the results of simulation, it can be seen that the laser spot diameter, the scanning speed, laser power and thickness of plate play dominant roles in the laser forming process. However, the bending angles αx and αy show different trends with the variation of parameters. In addition, in comparison with above four parameters, the effect of length and width of plate on the bending angle may be neglected, but their effects are significant for the bending radius R. |
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| Keywords: | laser forming temperature gradient mechanism metal plate |
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