Solution Step dialog box (Abaqus), Coupled Heat Transfer and Stress Setup Step page

Includes options for both the steady-state and transient solution steps available for a Coupled Thermal-Structural analysis in an Abaqus General analysis.

Steady-State/Transient Coupled Thermal-Stress Step Parameters
Time Period	Appears when Step is set to Steady-State Coupled Thermal-Stress.Specifies the time period of the step.
Time Duration of Step	Appears when Step is set to Transient Coupled Thermal-Stress.Specifies the total time allowed for the steps.
Time Incrementation	Controls how Abaqus divides the time within a step in a quasi-static analyses.AutomaticSpecifies automatic time incrementation. Abaqus automatically adjusts the size of the time increments to solve the problem efficiently.FixedSpecifies fixed time incrementation. You directly control the time incrementation.
Initial Time Increment	Appears when Time Incrementation is set to Automatic.Specifies the suggested initial time increment. This value should be reasonably correct but may be reduced if automatic time incrementation is being used.
Minimum Time Increment	Appears when Time Incrementation is set to Automatic.Specifies the minimum time increment allowed. If Abaqus needs a smaller time increment than this value, the solve terminates.
Maximum Time Increment	Appears when Time Incrementation is set to Automatic.Specifies the maximum time increment allowed. If you do not specify a value, Abaqus does not impose any upper limit on the time increment.
Time Increment Size	Appears when Time Incrementation is set to Fixed.Specifies the amount of time for each increment.
DELTMX: Max Temp. Change per Inc.	Appears when Step is set to Transient Coupled Thermal-Stress and Time Incrementation is set to Automatic.Set this parameter equal to the maximum temperature change allowed within an increment. Abaqus restricts the time step to ensure that this value is not exceeded at any node during any increment of the step.
Optional Parameters For Creep And Viscoelastic Response Control
Creep Integration	Lets you specify the creep integration method to use.Implicit MethodSpecifies the implicit creep integration method.Explicit MethodSpecifies the explicit creep integration method, which can be more efficient computationally because it does not require iteration.For more information, see Rate-dependent plasticity: creep and swelling in the Abaqus Analysis User’s Manual.
CETOL Accuracy Tolerance	Lets you set the maximum difference in the creep strain increment calculated from the creep strain rates based on conditions at the beginning and on conditions at the end of the increment. Setting the accuracy tolerance lets to control the time integration accuracy of the creep integration.
Activate Automatic Stabilization	Controls whether Abaqus automatically stabilizes unstable quasi-static solutions through the addition of volume-proportional damping to the model.NoAbaqus does not try to stabilize an unstable solution.Stabilize with Energy ControlAbaqus applies the dissipated energy fraction of the automatic damping algorithm to stabilize the solution.Stabilize with Damping ControlAbaqus applies damping to the model to stabilize the solution.Stabilize with Damping Factors from Preceding StepPropagates the damping factors from the previous step to this step.For more information, see Automatic stabilization of unstable problems in the Abaqus Analysis User’s Manual.
Dissipated Energy Fraction	Appears when Activate Automatic Stabilization is set to Stabilize with Energy Control.Lets you specify the dissipated energy fraction of the automatic damping algorithm.
ALLSDTOL (Max. Stabilization-Strain Energy Ratio)	Appears when Activate Automatic Stabilization is set to Stabilize with Energy Control, Stabilize with Damping Control, or Stabilize with Damping Factors from Preceding Step.Specifies the accuracy tolerance used by the adaptive automatic stabilization scheme.
Damping Factor	Appears when Activate Automatic Stabilization is set to Stabilize with Damping Control.Lets you directly specify the damping factor that Abaqus uses to stabilize the solution.

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Solution Step dialog box (Abaqus), Coupled Heat Transfer and Stress Setup Step page, Simcenter 3D 2021.1 Series

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