StressCheck Tutorial: Checking ITP Viability for Solving Nonlinear Events
Abstract: Case study for the checklist to determine the viability of performing Incremental theory of plasticity (ITP). Overload, unload, re-load and unload events studied for a U-shaped member under “pull apart” loads. Results between Deformation theory of plasticity (DPT), General nonlinear (geometric nonlinear + DPT) and IPT solutions for the initial overload event are compared.
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“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”