On the implementation in Abaqus of the global–local iterative coupling and acceleration techniques

Omar Bettinotti (1) , Stéphane Guinard (2) , Eric Véron (1) , Pierre Gosselet (3)

1 Dassault Systèmes
2 IRT Saint Exupéry - Institut de Recherche Technologique
3 LaMcube - Laboratoire de Mécanique, Multiphysique, Multiéchelle - UMR 9013

This paper presents results and convergence study of the Global–Local Iterative Coupling through the implementation in the commercial software Abaqus making use of the co-simulation engine. A hierarchical modeling and simulation approach is often required to alleviate modeling burdens. Particular focus has been devoted here on convergence acceleration and performance optimization. Two applications in statics with nonlinear material behavior and geometrically nonlinear formulation are considered here: first a holed curved plate under traction with elastic–plastic material, then a pre-stressed bolted joint connecting two plates between each other and subjected to traction load. Three different convergence acceleration techniques are compared in terms of convergence performance and accuracy. An inexact solver strategy is proposed to improve computing time performance. The results show promising results for the coupling technology and constitute a step forward in the availability of non-intrusive multi-scale modeling capabilities for complex structures and assemblies.

Mots clés: Global–local iterative coupling; Inexact solver; Non-intrusive multi-scale modeling; Acceleration techniques; Co-simulation; Abaqus; Nonlinear statics

Domaines: Mécanique des structures [physics.class-ph]

Omar Bettinotti, Stéphane Guinard, Eric Véron, Pierre Gosselet. On the implementation in Abaqus of the global–local iterative coupling and acceleration techniques. Finite Elements in Analysis and Design, 2024, 236, pp.104152. ⟨10.1016/j.finel.2024.104152⟩. ⟨hal-04522597⟩