Traditional FEA vs. StressCheck’s Numerical Simulation Technology
Abstract: StressCheck is the only FEA tool inherently designed to simplify the task of separating errors related to modeling from errors related to numerical solution quality.
- Tedious mesh refinement vs. automatic convergence techniques.
- Ignoring vs. illuminating model input errors (e.g. sharp corners, ill-posed boundary conditions).
- Averaging vs. not averaging stress results across elements.
- Nodal-based vs. element based.
- Low-curvature vs. high-curvature elements.
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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