曲げ加工用金属板の展開形状選定方法

Japanese Patent JP4471412

B2

PROBLEM TO BE SOLVED: To reflect an intrinsic deformation of heating lines one by one by imparting an objective position shape, calculating FEM forced deformation, planning a linear heating method, arranging heating lines, and then reversing the direction of intrinsic deformation of the heating lines, imparting an objective local shape and conducting FEM elastic simulation. SOLUTION: After an objective position shape 1 to work a metal plate is decided, the objective intrinsic strain distribution ε in forcedly deforming an initial plane to this shape by FEM is calculated. This is approximately represented by a generated intrinsic strain distribution ε' which is the concentrated strain distribution generated by appropriate arrangement, etc., of plural heating lines. By fetching the intrinsic deformation of heating lines from a data base, the arrangement of the heating lines 2 is decided. Successively, while taking the absolute value of an amount of the generated intrinsic stain distribution ε' as it is, the generated intrinsic strain distribution-ε' with reversing positive/negative is calculated, this is given to the objective position shape 1 based on the arrangement of the heating lines 2 and is subjected to free deformation in FEM elastic deformation so as to form an extended face 4 and then to an extended face of a metal plate for bending.

Takayama Ishiyama
Mikito Shirai
Yoshihiko Tango

JP4286199A

June 02, 2010

February 22, 1999

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IHI Co., Ltd. Marine United

B21D11/20; G06F17/50; G06F19/00; G06Q50/00; G06Q50/04; G06F17/00

JP10146621A
JP9295068A
JP10230326A
JP7075835A
JP7060368A
JP7024534A
JP6226360A
JP5076947A
JP5108765A
JP1275439A

Mitsuo Sakamoto

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