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+---
+type: concept
+title: "Abaqus Multiphysics Coupling and Co-simulation"
+complexity: advanced
+domain: computational-mechanics
+created: 2026-05-29
+updated: 2026-05-29
+address: c-000089
+aliases:
+  - Abaqus co-simulation
+  - Abaqus sequential coupling
+  - Abaqus multiphysics coupling
+tags:
+  - concept
+  - finite-element-method
+  - abaqus
+  - multiphysics
+  - co-simulation
+status: current
+related:
+  - "[[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]"
+  - "[[Finite Element Heat Transfer and Field Problems]]"
+  - "[[Abaqus Output Database and Results Files]]"
+  - "[[Abaqus Job Execution Workflow]]"
+  - "[[Abaqus User Subroutines and Utility Routines]]"
+sources:
+  - "[[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]"
+---
+
+# 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.
+
+## 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.
+
+## Sources
+
+- [[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]
+