Boundary conditions > Using fields and expressions to define boundary conditions

Breakout modeling

Breakout modeling allows you to evaluate stresses for a portion of an overall model. In breakout modeling, you:

Analyze the overall structure, using a coarse mesh. Solve for displacements.
Create breakout models at critical stress locations, using a fine mesh.
Map the displacement results from the overall model to the cut faces of the breakout model.
Solve the breakout model and evaluate stresses.

You may want to use breakout modeling for the following reasons:

Creating a fine mesh of an overall structure can be very expensive in terms of performance and hardware requirements, especially for nonlinear analysis.
Large, fine meshes can significantly increase turnaround times for variants and model changes.
Stress evaluations must be done with existing (coarser) models.
It is difficult to refine critical areas in advance because not all critical locations are obvious.

Define a time-varying force with a formula field

Define a spatially-distributed force with a formula field

Define a spatial normal pressure load

Define a spatial pressure load in parameter space

Breakout modeling workflow

Using fields and expressions to define boundary conditions

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Breakout modeling, Simcenter 3D 2021.1 Series

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