Parallel computing for sheet metal strain analysis

摘要

This paper describes an application of high performance computing for industrial sheet metal strain analysis. A grid pattern of small circles is first electrochemically etched on the surface of a sheet metal blank. The blank is then formed into the desired shape. After forming, a laser digitizer scans on the surface of the sheet metal part and collects (X, Y, Z) coordinate points with the laser beam reflected intensity data. The scan resolution is 10,000 points per square centimetre. Using parallel data processing, each deformed circle is extracted, grouped and fitted. The strains are computed by comparing the fitting result to the original grid element dimensions.