Defining Coupled Thermal-Stress Explicit Steps

You can define a coupled thermal-stress explicit step to perform a thermal analysis and an explicit dynamic stress analysis (using Abaqus/Explicit solvers) simultaneously.

This task shows you how to:

Before you begin: Create a general analysis case, as described in Starting a New Simulation.
See Also
About Coupled Thermal-Stress Explicit Steps

Define Coupled Thermal-Stress Explicit Steps Using the Solver's Default Time Incrementation

  1. From the Procedures section of the action bar, click Coupled Thermal-Stress Explicit Step .
  2. Optional: Enter a descriptive Name.
  3. Enter a value as the Step time, which is the duration of the step.
  4. Expand the Incrementation section, and select Solver default from the Incrementation type options.
  5. Optional: Expand the Advanced section to access more options, and select Include geometric nonlinearity to account for nonlinear effects caused by large displacements and deformations.

    If you enable this option, it remains active during all subsequent steps in the simulation.

  6. Click OK.

Define Coupled Thermal-Stress Explicit Steps Using Automatic Time Incrementation

  1. From the Procedures section of the action bar, click Coupled Thermal-Stress Explicit Step .
  2. Optional: Enter a descriptive Name.
  3. Enter a value as the Step time, which is the duration of the step.
  4. Expand the Incrementation section.
    1. From the Incrementation type options, select Automatic.
      The solver determines the size of each increment automatically.
    2. Enter a value as the Scale factor to scale the time increment computed by the Abaqus solvers.
    3. Select Element by element to estimate the stable time increment element by element.

      Element-by-element estimates generally require more increments and more computational time than the global time estimator.

    4. Optional: Select Improved DT method to estimate the stable time increment for three-dimensional continuum elements and for elements with plane stress formulations.
    5. Enter a value as the Maximum time increment.

      If you do not specify a value, the app does not impose a limit.

  5. Optional: Expand the Advanced section to access more options, and select Include geometric nonlinearity to account for nonlinear effects caused by large displacements and deformations.

    If you enable this option, it remains active during all subsequent steps in the simulation.

  6. Click OK.

Define Coupled Thermal-Stress Explicit Steps Using Fixed Time Incrementation

  1. From the Procedures section of the action bar, click Coupled Thermal-Stress Explicit Step .
  2. Optional: Enter a descriptive Name.
  3. Enter a value as the Step time, which is the duration of the step.
  4. Expand the Incrementation section.
    1. From the Incrementation type options, select Fixed.
      The solver uses a constant increment size that you specify.
    2. Enter a value as the Scale factor to scale the time increment computed by the Abaqus solvers.
    3. Optional: Select Improved DT method to estimate the stable time increment for three-dimensional continuum elements and for elements with plane stress formulations.
  5. Optional: Expand the Advanced section, and select Include geometric nonlinearity to account for nonlinear effects caused by large displacements and deformations.

    If you enable this option, it remains active during all subsequent steps in the simulation.

  6. Click OK.

Define Coupled Thermal-Stress Explicit Steps Using Direct Time Incrementation

  1. From the Procedures section of the action bar, click Coupled Thermal-Stress Explicit Step .
  2. Optional: Enter a descriptive Name.
  3. Enter a value as the Step time, which is the duration of the step.
  4. Expand the Incrementation section.
    1. From the Incrementation type options, select Direct.
    2. Enter a value as the Time increment.
  5. Optional: Expand the Advanced section, and select Include geometric nonlinearity to account for nonlinear effects caused by large displacements and deformations.

    If you enable this option, it remains active during all subsequent steps in the simulation.

  6. Click OK.