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Abaqus Multiphysics Coupling and Co-simulation
Definition
Abaqus multiphysics coupling and co-simulation are workflows for coupling structural, thermal, fluid, electromagnetic, acoustic, logical, and other analysis domains either within Abaqus procedures or at run time with other solvers.
How It Works
Sequential coupling uses results from one analysis as predefined fields or loads in a later analysis. Common fields include temperature, normalized concentration, and electric potential. A common workflow is uncoupled heat transfer followed by thermal-stress analysis, where temperature history is read from the output database or results file and interpolated into the stress analysis.
Co-simulation performs run-time coupling between Abaqus and another Abaqus analysis or a third-party program. The coupled domains exchange data over a common interface in a synchronized way. Examples include fluid-structure interaction, conjugate heat transfer, electromagnetic-thermal coupling, electromagnetic-mechanical coupling, Standard/Explicit structural partitioning, and structural-logical coupling with system-level models.
Abaqus-Analysis-User-s-Guide-Volume-III adds the material definitions that make many coupled procedures meaningful: conductivity and specific heat for thermal coupling, diffusivity and solubility for mass diffusion, piezoelectric and electromagnetic properties for electromechanical coupling, and permeability/sorption/swelling data for pore-fluid stress coupling.
Abaqus-Analysis-User-s-Guide-Volume-IV adds the element families that carry many coupled fields: thermally coupled solid and shell variants, pore-pressure elements, acoustic elements, fluid continuum elements, fluid pipe and fluid pipe connector elements, and Eulerian elements.
Abaqus-Analysis-User-s-Guide-Volume-V adds the boundary and interaction side of coupling: predefined fields carry sequentially coupled results, contact properties can include thermal, electrical, and pore-fluid transfer, and cavity radiation defines radiative thermal interaction among surfaces.
Why It Matters
Coupled physics can be too expensive, too specialized, or too weakly coupled to solve with one monolithic procedure. Sequential coupling and co-simulation let analysts choose the coupling strength and solver boundary deliberately.
Connections
- Finite Element Heat Transfer and Field Problems gives the broader field-problem and multiphysics context.
- Abaqus Output Database and Results Files provides the stored field histories used in sequential coupling.
- Abaqus User Subroutines and Utility Routines provides lower-level extension paths for custom staggered or external data exchange.
- Abaqus Transport Acoustic and Electromagnetic Materials supplies material properties for field and electromagnetic coupling.
- Abaqus Porous Media and Pore Fluid Materials supplies material properties for coupled pore-pressure and deformation workflows.
- Abaqus Fluid Acoustic Eulerian and Particle Elements supplies the element-family side of acoustic, fluid, Eulerian, and pipe-flow workflows.
- Abaqus Loads and Predefined Fields supplies the field-transfer side of sequential workflows.
- Abaqus Contact Property Models and Abaqus Cavity Radiation Interactions supply surface-interaction coupling mechanisms.