日本金属学会誌

J. Japan Inst. Metals, Vol. 74, No. 10 (2010),
pp. 668-676

Simple Model to Estimate Final Form of Thin Plate under Bowl Laser Forming

Tetsuya Akiyama, Tohki Shinohara and Toshio Terasaki

Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550

Abstract:

In a previous report, authors conclude that you have to introduce in-plane strain much more than the amount calculated by geodetic analysis when you produce bowl shape thin plate by laser forming. In academic interests, not only to know the best in-plane strain to create the target bowl shape but also to know the mechanism dominantly controlling deformations in laser forming process. To consider what the dominant factor is and how the factor works, we need to study how a numerical model which has a few functions to show major effect on laser forming process could explain experimental results.
In this report, we produce a numerical model which has two functions, accumulation of elastic energy caused by in-plane strain and bending motion. We study how this limited model can explain the experimental results shown in the previous report.


(Received 2010/3/25)

Keywords:

laser forming, bowl shape, numerical model, thin plate, two direction, in-plane strain, initial curvature, plate length


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