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Boundary Conditions
Boundary Conditions available for SimSolid.
Pressure
Imported Pressure
Imported pressure allows you to bring in complex, non-uniform pressure distributions from other analysis software, typically Computational Fluid Dynamics (CFD) simulations.

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Boundary Conditions
Boundary Conditions available for SimSolid.
- Available Boundary Conditions for Analyses
  A comparison chart showing the available boundary conditions for each analysis type.
- Constraints
- Pressure
  - Uniform Pressure
    Uniform pressure is a constant force applied perpendicular to a surface.
  - Hydrostatic Pressure
    Hydrostatic pressure is the pressure exerted by a fluid at rest due to gravity.
  - Imported Pressure
    Imported pressure allows you to bring in complex, non-uniform pressure distributions from other analysis software, typically Computational Fluid Dynamics (CFD) simulations.
  - Wind Load
    Wind load is the force exerted by wind on a structure.
- Force/Displacement
  Apply uniform loads and/or displacements to faces, edges, vertices, or spots.
- Gravity Load
  Simulate the force of gravity as it affects your model.
- Translational Inertia Load
  Apply a uniformly distributed translational inertia load over the volumes of the parts in an assembly.
- Rotational Inertia Load
  Apply a uniformly distributed rotational inertia load over the volumes of the parts in an assembly.
- Inertia Relief
  Simulate deformations and stresses in cases where you have an unconstrained structure to which an active load is suddenly applied.
- Remote Load
  Apply distributed loads (tractions) to faces, general virtual connector, or spots that are statistically equivalent to a load applied on a single point.
- Remote Displacement
  Apply displacements to faces and/or spots that are statistically equivalent to a load applied on a single point.
- Thermal Load
  Simulate deformations and stresses induced by the temperature changes in your model.
- Bearing Load
  Apply a varying pressure load to full or partial face(s) of revolution.
- Distributed Mass
  Apply distributed mass across selected faces.
- Bolt/Nut Tightening Loads
  Available for blind bolts (bolt without a nut), bolt with nut/bolt on threaded rod, nut on generic post or handle.
- Base Excitation
- Volume Expansion/Shrinkage
  Apply volumetric expansion/shrinkage coefficient over seam welds or other parts in the assembly.
- Temperature
  In thermal analysis, limit temperature on the selected faces, edges, vertices, or spots to a prescribed value.
- Thermal Convection
  In thermal analysis, define a convective heat exchange condition on faces and spots.
- Surface Heat Flux
  In thermal analysis, apply uniformly distributed heat loads to faces and spots.
- Volume Heat Loads
  In thermal analysis, simulate internal heat generation and internal heat absorption in volumes.
- Solar Loads
  Apply heat loads based on the sunbeam’s direction for thermal analysis
- Perfect Electric Conductor (PEC)
  Apply perfect electric conductor condition to faces.
- Waveguide Port
  Specify the excitation planes in waveguide structures.
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Frequently Asked Questions
This section provides quick responses to typical and frequently asked questions regarding

Imported Pressure

Imported pressure allows you to bring in complex, non-uniform pressure distributions from other analysis software, typically Computational Fluid Dynamics (CFD) simulations.

This is useful for analyzing components subjected to pressure fields that vary across the surface, such as the aerodynamic pressure on an aircraft wing or the pressure on a car's body.

Apply Imported Pressure

Apply pressures from an external comma separated values (.csv) file. Available only for static analysis.

In the Project Tree, open the Analysis Workbench Workbench.
On the workbench toolbar, click Pressure → Imported Pressure.
Imported Pressure dialog will open.
Define units for coordinates and pressure
Click Import from .csv. Browse to the desired .csv file in File Explorer and click Open.
Information from the .csv file is posted at the bottom of Imported pressure dialog to review. Click OK to create and map the load at specified points./parts.

The .csv file contains one header row and one or more additional data rows.

Imported pressure .csv file format fields are as follows:

ID (optional) – Alphanumeric value used to identify a specific point.
X, Y and Z – Numeric values Spatial location used to map pressure to the nearest point on a face.
Pressure – Numerical value.
Part_ID (optional) – Numerical value. ID of the part to map the pressure. Mapping fails if the part with specified part ID is not present at the spatial location defined in X, Y and Z.
Part_Name (optional) - Alphanumeric value. Name of the part to map the pressure. Mapping fails if the part with specified part name is not present at the spatial location defined in X, Y and Z.

Note: If both Part ID and Part Name are defined, Part name takes precedence.

Example CSV File

ID,X,Y,Z,Pressure,Part_ID,Part_Name
1,216,417,40,100,15,square tube
2,216.975,417,40.0961,100,15,square tube
3,217.913,417,40.3806,100,15,square tube