Coupled thermal-structural analysis (Abaqus)

In the Abaqus environment, a Coupled Thermal-Structural analysis is available. It neglects inertia effects and can be transient or steady-state.

Solution steps available

Steady-State Coupled Thermal-Stress

In a steady-state solution step, you specify time period and time increment parameters. The time values allow you to change loads and boundary conditions through the step and to obtain solutions for highly nonlinear, but steady-state, cases. The options on the Steady-State Coupled Thermal-Stress Step Setup tab correspond to the parameters for the Abaqus *COUPLED TEMPERATURE-DISPLACEMENT, STEADY STATE keyword.

Transient Coupled Thermal-Stress

In a transient solution step, you can control the time increments directly or let the software control it automatically based on a specified maximum allowable nodal temperature change in an increment, Δθmax (DELTMX: Max.Temp.Change per Inc. in the Coupled Temperature-Displacement Step Setup tab). The software ensures that the value is not exceeded at any node, except nodes with boundary conditions, during any increment of the analysis.The options on the Coupled Temperature-Displacement Step Setup tab correspond to the parameters for the Abaqus *COUPLED TEMPERATURE-DISPLACEMENT keyword.

Supported elements

Coupled temperature-displacement elements that have both displacements and temperatures as nodal variables are available in a Coupled Thermal-Structural analysis with a Coupled Temperature-Displacement solution type.

For a list of supported elements, see Abaqus elements.

For information about using the supported elements in a Coupled Thermal-Structural analysis, see Managing elements in Coupled Thermal-Structural analyses.

Boundary conditions

You can use boundary conditions to prescribe both temperatures (DOF 11) and displacements/rotations (DOF1 through DOF6) at nodes in a Coupled Thermal-Structural analysis. You can specify boundary conditions as functions of time using amplitude fields.

Supported boundary constraints

Loads

The load boundary conditions available in the Coupled Thermal-Structural analysis include the structural loading conditions with the thermal load boundary conditions (Temperature Load is available in the pure structural analysis but is not valid in a Coupled Thermal-Structural analysis). The software does not modify the loads and writes them to the same card and format as in an uncoupled analysis.

Supported loads

Requesting output

In a Coupled Thermal-Structural analysis, you can define the Abaqus Thermal-Structural Output Requests modeling object to request output.

Monitor the solution

For a Coupled Thermal-Structural analysis, you can monitor the solution selecting both structural DOFs (DOF1 through DOF6) and temperature DOF (DOF11).

Learn more

Types of coupled thermal-structural analyses (Abaqus)

Dynamic coupled thermal-structural analysis (Abaqus)

Managing elements in Coupled Thermal-Structural analyses

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Coupled thermal-structural analysis (Abaqus), Simcenter 3D 2021.1 Series

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