StressCheck Demo: Benchmarking 3D Stress Concentration Factors via Numerical Simulation

Abstract: A benchmarking-by-FEA case study is performed for a tension bar of circular cross section with a semi-circular groove. The goal was to compute the 3D stress concentration factor by classical approximation (Walter D. Pilkey’s ‘Peterson’s Stress Concentration Factors’, Section 2.5.2) and Numerical Simulation (StressCheck FEA) for several Poisson’s ratio values, and demonstrate the effect of Poisson’s ratio on the 3D stress concentration factors.

For each StressCheck FEA simulation, solution verification was performed to show the maximum stress converged and was independent of degrees of freedom.

Read the a full discussion on this benchmark case study, and how Key Quality Checks must be passed before performing any benchmarking-by-FEA.

Categories: Linear Elasticity Solver, Simulation Technology, StressCheck Core, StressCheck Professional. Tags: Boundary Conditions, Convergence Extraction, Detailed Stress, Fatigue, Linear Analysis, Material Properties, Numerical Simulation, Parametric Modeling, Plot Extraction, Results, Solid Modeling, Theory.

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Testimonials

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. Engelstad
Technical Fellow, Lockheed Martin Aeronautics Company, Structural Methods and Analysis