On the implementation in Abaqus of the global–local iterative coupling and acceleration techniques
arxiv(2024)
摘要
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.
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