Automated Beta Curve Development Using Parametric FEA
Abstract: Beta factors are often expressed as the superposition of the stress intensity factors (SIFs) of several simple cases. This can be a challenge for complex parts. New approach: Automated beta curve development using parametric finite element analysis (FEA).
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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