Abstract
In laser forming, a desired shape for a metal plate can be obtained by controlling a laser scan path and process parameters. The distance planned between parallel scan paths is larger in current laser path planning in order to avoid interference between them, and thus a continuous strain field cannot be formed. In addition, crossed heating lines are also adopted for forming complicated parts. The effects of the parallel and crossed scanning paths on the deformation field were investigated in this paper. The results show that for parallel heating lines, plastic strain fields produced by adjacent scans do not affect each other when the path spacing is greater than the laser spot diameter, but the plastic strain fields produced by the adjacent scans affect each other when the paths spacing is less than the laser spot diameter. A desirable continuous plastic strain field can be achieved by choosing appropriate path spacing and process parameters. For the crossed heating lines, the plastic strain field is different when adopting vertical and diagonal crossings. The influence between the different heating lines must be considered for high-precision laser forming.
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Shi, Y., Lu, X., Yi, P. et al. Effect of heating paths on strain distribution of plate in laser forming. Int J Adv Manuf Technol 66, 515–521 (2013). https://doi.org/10.1007/s00170-012-4345-3
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DOI: https://doi.org/10.1007/s00170-012-4345-3