Notes on Deformation Theory of Plasticity and Geometric Nonlinear Algorithms
Abstract: Theoretical foundations, implementation details and practical examples for StressCheck Professional’s deformation theory of plasticity (DTP) and geometric nonlinear algorithms. General nonlinear (NL Gen) analysis uses a combination of DTP and geometric nonlinear algorithms.
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“Accurate and reliable stresses and Stress Intensity Factors are required for determination of static and residual strength and for crack growth analyses in analysis tools such as AFGROW. For some geometries, industry solutions are either insufficient or nonexistent. The geometry, applied forces, and crack shapes and dimensions must be modeled reasonably well to obtain useful engineering data. The p-version finite element software StressCheck® (ESRD, Inc., St. Louis, Missouri, USA) is used to demonstrate how accurate finite element solutions can lead to good quality engineering analysis.”