{'fraction_non_alphanumeric': 0.012367491166077738, 'fraction_numerical': 0.0008833922261484099, 'mean_word_length': 5.625730994152047, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A FRAMEWORK FOR METAL FORMING SIMULATION

Abstract. In this work the element-free Galerkin method is investigated when submitted to the large deformation process coupled with unilateral contact. The material model assumes the multiplicative decomposition of the deformation gradient into elastic and plastic parts and considers a J2 elastoplastic constitutive relationship with a nonlinear isotropic hardening. The constitutive model is written in terms of the rotated Kirchoff stress and the logarithmic strain conjugate measure. A Total Lagrangian formulation is considered. The imposition of the essential boundary conditions is made by an augmented Lagrangian methodology. The contact formulation used in this work assumes the Signorini condition. To impose the contact the body is modeled using a triangular background integration mesh. Aspects related to the volumetric locking are also numerically investigated and a F-bar antivolumetric locking methodology type is proposed. Some numerical results are presented, under axisymmetric and plane strain assumption, in order to attest the performance of the proposed methodology.