Pedro V. Marcal

TL;DR: In this article, an incremental and piecewise linear finite element theory is developed for the large displacement, large strain regime with particular reference to elastic-plastic behavior in metals, and the resulting equations, though more complex, are in a similar form to those previously developed for large displacement small strain problems, the only additional term being an initial load stiffness matrix which is dependent on current loads.

TL;DR: In this article, a numerical model is developed for the welding and subsequent loading of a fabricated structure, which treats the weld process as a thermo-mechanical problem, and the model includes finite strain effects during isothermal loading, so that it may be used in the modeling of distortion sensitive structure.

TL;DR: Elastic-plastic finite element analysis of near crack tip stress and strain field structure was performed in this article, where the authors used a finite element finite element (FME) model.

TL;DR: In this article, the principle of virtual work is employed to derive general relations governing geometrically nonlinear structural behavior and three general finite-element analysis models, namely, potential energy, direct and incremental, are formulated for nonlinear pre-and post-buckling analyses.