How to Set Distributed Boundary Condition and Body Attribute

Setting Locations

Boundary Condition Types

Setting Items

Applicable Analyses

Boundary Condition > Thermal Tab

Temperature

Temperature

Thermal Analysis, Thermal-Electric Coupled Analysis

Boundary Condition > Thermal Tab

Heat Flux

Heat Flux

Thermal Analysis, Thermal-Electric Coupled Analysis

Boundary Condition > Thermal Tab

Heat Transfer,Convection

Ambient Temperature (Room Temperature)

Thermal Analysis, Thermal-Electric Coupled Analysis

Coefficient of Heat Transfer

Thermal Analysis, Thermal-Electric Coupled Analysis

Boundary Condition > Mechanical Tab

Displacement

Displacement Vector

Stress Analysis, Piezoelectric Analysis

Boundary Condition > Mechanical Tab

Pressure

Pressure

Stress analysis, Piezoelectric analysis

Boundary Condition > Mechanical Tab

Distributed Load (Face)

Distributed Load Vector

Stress Analysis, Piezoelectric Analysis

Boundary Condition > Fluid Tab (Fluid Thermal Tab)

Specify inflow velocity

Velocity Vector

Fluid Analysis, Fluid-Thermal Analysis

Body Attribute > Fluid Tab

Specify flow, Specify flow velocity

Velocity Vector

Fluid Analysis, Fluid-Thermal Analysis

Body Attribute > Heat Quantity Tab

N/A

Heat Density

Thermal Analysis, Thermal-Electric Coupled Analysis

Body Attribute > Initial Temperature Tab

N/A

Initial Temperature

Thermal Analysis, Thermal-Electric Coupled Analysis
(Transient Analysis Only)

Analysis Condition > Transient Analysis Tab

N/A

Body Attribute > Thermal Load Tab

N/A

Reference Temperature
Reached Temperature

Stress Analysis

Analysis Condition > Thermal Load Tab

N/A

Body Attribute > Direction Tab

N/A

Direction (Vector)

Piezoelectric Analysis, Thermal Analysis

Analysis Condition > Transient Analysis Tab, Body Attribute > Initial Velocity

-

Initial Velocity

Stress Analysis (Transient Analysis)

Body Attribute > Initial Strain

-

Initial Strain

Stress Analysis, Piezoelectric Analysis

Setting Item

Notes

Distribution Dimension

1D

Sets the linear distribution.

Enter the global X coordinates or the local X' coordinates, and enter their values.

Press the Graph button to view the entered distribution.

• Specify the local direction vector to set the distribution on non-X direction.

2D

Sets the planar distribution.

Enter the global X and Y coordinates or the local X' and Y' coordinates, and enter their values.

• Specify the local direction vectors to set the distribution on non-XY plane.

3D

Sets the 3-dimensional distribution.

Enter the global X, Y and Z coordinates or the local X', Y' and Z' coordinates, and enter their values.

Coordinate System

Global Coordinates

The model's coordinate system is applied to the distribution data table.

Local Coordinates

Alternatively you may define the local coordinate system and apply it to the table.

For 1D distribution, set the local origin O' and define the direction vector O'X'.

For 2D/3D distribution, set the local origin O' and define the direction vectors O'X' and O'Y'.

See Examples 2 and 4.

• When the local coordinate system is used for the vectorial boundary condition,
  enter the vector values of the corresponding global coordinates.

Local Coordinates
Setup

Origin O'

Sets the local coordinate origin.

Vector O'X'

Sets the direction vector for the first local coordinate O'X'.

Vector O'Y'

Sets the direction vector for the second local coordinate O'Y'.

Reference Direction/Plane (Quick Setup)

This is a simplified way to set the direction vectors.

For 1D, click one of the direction buttons. The selected direction will set Vector O'X'.

For 2D, click one of the plane buttons. The selected plane will set Vectors O'X' and O'Y'. .

[Coordinates-Value] Table

Sets the coordinates and each value.

Enter X coordinate for 1D, X/Y coordinates for 2D, and X/Y/Z coordinates for 3D.

For vector values, enter the values for 3 directions.

Press the Import button to read the csv data file.

Press the Graph button to view the entered linear distribution. This button is functional for 1D distribution only.

#

Setting Item

Resulting Distribution

1

Analysis Space: 2D
1mm x 1mm plane

Distribution Dimension: 1D
Coordinate System: Global Coordinates

[Coordinates-Value] Table

The values for the points between X=0 and X=1 are interpolated.

2

Analysis Space: 2D
1mm x 1mm plane

Distribution Dimension: 1D
Coordinate System: Local Coordinates

Vector O'X' = (0, 1) (Press the Z Direction button)

[Coordinates-Value] Table

X' = 1 in local is Z = 1 in global.

3

Analysis Space: 3D
Top face of 1mm x 1mm x 1mm cube

Distribution Dimension: 2D
Coordinate System: Global Coordinates

[Coordinates-Value] Table

The csv data with global 0.25mm-lattice coordinates and each value.

The value is proportional to the distance from the origin.
Value = ( X^2 + Y^2 )^0.5

4

Analysis Space: 3D

Side face (YZ at z=5) of 1mm x 1mm x 1mm cube

Distribution Dimension: 2D
Coordinate System: Local Coordinates

Origin O' = (0, 0, 5 x 10^-3 )

Vector O'X' = (0, 1, 0), Vector O'Y' (0, 0, 1)
You may press the YZ Plane button.

[Coordinates-Value] Table

The csv data with local 0.25mm-lattice coordinates and each value.

The value is proportional to the distance from the origin.
Value = ( X'^2 + Y'^2 )^0.5

5

Analysis Space: 3D
Inside of 1mm x 1mm x 1mm cube

Distribution Dimension: 2D
Coordinate System: Global Coordinates

[Coordinates-Value] Table

The csv data with global 0.25mm-lattice coordinates and each value.

The value is proportional to the distance from the origin.
Value = ( X^2 + Y^2 +Z^2)^0.5

Number

Setting Item

Resulting Distribution

6

Analysis Space: 2D
1mm x 1mm plane

Distribution Dimension: 2D
Coordinate System: Global Coordinates

[Coordinates-Value] Table

The interpolation is possible only on Z=0.
There is no setting information for Z>0.

7

Analysis Space: 2D
1mm x 1mm plane

Distribution Dimension: 2D
Coordinate System: Global Coordinates

[Coordinates-Value] Table

The interpolation is possible within the area of (X, Z) = (0, 0) to (0.5, 0.5).
There is no setting information outside the area.