Hydrodynamic analysis software Abaqus Multiphysics

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Overview
Abaqus Multiphysics delivers integrated multiphysics simulation capabilities within the Abaqus Unified FEA product suite, enabling engineers to model interacting physical phenomena such as structural mechanics, fluid flow, heat transfer and electromagnetics in unified workflows.

Multiphysics Simulation & Analysis in Abaqus
Multiphysics functionality is embedded in Abaqus core tools and has evolved over many releases to support coupled analyses across disciplines. Users can extend structural FEA models to include additional physics while reusing element libraries, material data and load histories.

Creating a Multiphysics Simulation Flow in Abaqus

• Sequential results mapping - External field capability for mapping upstream simulation results (for example temperature or pressure) onto an Abaqus model for subsequent analysis.
• Fully‑coupled simulation - Solution procedures that resolve two‑way interactions such as thermal stress, thermal‑electrochemical‑structural coupling, acoustic‑structural coupling and flow through porous media.
• Co‑simulation - Open co‑simulation framework to connect Abaqus with external solvers when integrated multi‑solver workflows are required.

Advantage
The ability to add physics to an existing FEA model without rebuilding geometry or material databases reduces model preparation effort: same model, same elements, same materials and same load history can support multiphysics studies.

Multiphysics Capabilities inside Abaqus

• Coupled Eulerian‑Lagrangian (CEL) - Simultaneous fluid‑structure interaction (FSI) solved inside Abaqus.
• Hydrostatic‑Fluid‑Mechanical - Modeling of fully enclosed gas or liquid cavities with pressure‑volume behavior (balloons, airbags, partially filled tanks, IV bags).
• Piezoelectric‑Mechanical - Two‑way electrostatic piezoelectric coupling: electrical loading produces strain and mechanical stress modifies electrical potential.
• Structural‑Acoustic - Integrated structural‑acoustic coupling for noise transmission, radiation and attenuation/amplification analyses.
• Thermal‑Electric - Coupling of current flow and heating where temperature affects resistivity and electrical behaviour.
• Thermal‑Mechanical - Thermal stress and friction‑driven heat generation including coupled temperature‑displacement problems.
• Thermal‑Fluid‑Mechanical - Simultaneous treatment of moisture and heat effects for realistic operating and manufacturing conditions.
• Structural‑Pore Pressure - Coupled soil‑fluid approaches to analyze pore pressure effects on geotechnical behaviour.

Use Cases and Applications
Abaqus Multiphysics is applied in battery systems, electronic assemblies, injection molding, airbags and inflatable components, fluid‑filled enclosures, piezoelectric devices, acoustic systems and geotechnical problems where interacting physics determine performance and safety.

Technical specifications

• Integrated within the Abaqus Unified FEA product suite.
• Supported physics: structural mechanics, fluid dynamics, heat transfer, electromagnetics and electrochemical coupling.
• Workflows: sequential results mapping, fully‑coupled solvers, co‑simulation with external solvers.
• Key modules: CEL, Hydrostatic‑Fluid‑Mechanical, Piezoelectric‑Mechanical, Structural‑Acoustic, Thermal‑Electric, Thermal‑Mechanical, Thermal‑Fluid‑Mechanical, Structural‑Pore Pressure.
• Reuse of model, element library and material data across multiphysics analyses.