StressCheck Tutorial: Modeling Spline-Shaped Thru Cracks
Abstract: Modeling and automeshing of spline-shaped thru cracks for a 2D plate with offset holes. The crack shapes were generated by creating points at specific locations on each side of the holes, then fitting splines through the points. The splines were then imprinted on the plate, and automeshed using the Crack Edge method.
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The software provides a highly reliable and user-friendly production stress analysis tool that will replace the Finite Element Method (FEM) tools and failure criteria the experts currently employ for analyzing bonded joints. The software includes an FEM-based handbook format, which allows non-experts to utilize models prepared by specialists. The handbook problems include built-in failure criteria, geometric and material nonlinearities, and the modern FEM technology provides better error control and the treatment of very large aspect ratios.”
Dr. Stephen P. EngelstadTechnical Fellow, Lockheed Martin Aeronautics Company, Structural Methods and Analysis