Member designing method and apparatus

Details Member designing method and apparatus Member designing method and apparatus

2011-06-07

2011-06-07

Dunn, Drew A (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Mechanical measurement system

Reexamination Certificate

active

07957918

ABSTRACT:
A computer performs press forming analysis based on a shape of a formed product or of a member, a blank holder force, a friction coefficient, a tensile strength of a material, a yield strength, a stress-strain relation, and a sheet thickness, as press forming conditions, to calculate sheet thickness distribution and post-formation strain distribution of the formed product. The computer also performs performance analysis based on the sheet thickness distribution, the post-formation strain distribution, and the shape of the formed product or of the member, as state amounts of the formed product. This calculate performance of the member. The computer repeats the calculations performed in the process from the first step through the second step a predetermined number of times, with at least one of the press forming conditions being changed, to output an optimum press forming condition that gives a maximum value or a target value of the performance

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