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

“We have been having very good success using the P-Version finite element code, StressCheck^®, to develop the 2-D solutions for two independent cracks in a plate. I have asked one of our AFGROW team members to model the plate and lug cases using StressCheck^® and compare them to the existing AFGROW closed-form solutions. [He] modeled the cases several different ways to be sure that he was getting the best possible solutions. He has verified that the bearing load option in StressCheck^® provides excellent results”

Jim Harter
Team Leader-Analytical Fatigue/Fracture Reliability Team Air Force Research Laboratory (AFRL)