Pressure PropertyManager

To access the Pressure PropertyManager, do one of the following:

• Click the down arrow on External Loads (Simulation CommandManager) and select Pressure .
• In the Simulation study tree, right-click External Loads , and select Pressure .

Pressure Type

	Normal to selected face	Applies pressure in the direction normal to each face or shell edge you select. In the case of shell edges, the pressure is applied normal to the narrow face (across the thickness) of the shell.
	Use reference geometry	Applies pressure in the direction specified by the reference entity you select. In an assembly, you can use reference geometry from the assembly or the components (parts and subassemblies) of the assembly.
	Faces, Edges for Pressure	Select faces of solid models or edges and faces of shell models to apply the pressure.
	Face, Edge, Plane, Axis for Direction	Select a reference entity to specify the direction of pressure. This option appears only if you select Use reference geometry. The pressure you can apply depends on what you select: Planar face or a reference plane You can specify pressure Along Plane Dir 1 , Along Plane Dir 2 , or Normal to Plane . Cylindrical face or a reference axis You can specify pressure in the Radial , Circumferential , or Axial direction. Edge You can specify pressure along the edge . To reverse the direction of pressure, enter a negative value.

Pressure Value

	Units	Sets the units
	Pressure value	Sets the pressure value.

Variation with Time

For linear and nonlinear dynamic studies, you can define a time-dependent pressure.

Nonuniform Distribution

Specifies options for nonuniform pressure distribution.

	Select a Coordinate System	Select a coordinate system to define the nonuniform pressure: Cartesian coordinate system (x, y, z) Cylindrical coordinate system (radial "r", circumferential "t", axial "z") Spherical coordinate system (radial "r", longitude " t", latitude "p")
	Units	Sets the units (length) for the Cartesian (x, y, z), cylindrical (r, z), and spherical (r) coordinates. These units should be compatible with the pressure value units. For example if you select psi for pressure, set in for the nonuniform distribution; for pressure in N/m^2, select m.
	Angular Units	Sets the angular units for the cylindrical (t) and spherical (t, p) coordinates. Trigonometric functions always treat the input value in radians. To convert degrees to radians multiply by pi /180 (for example cos("t" * 3.14159265 / 180.0)).
	Edit Equation	Defines the equation which describes the spatial variation of the pressure in the selected coordinate system. You can use a list of basic mathematical operators from the Functions drop-down menu. In the equation interface, enter the coordinates inside quotation marks: "x", "y", "z", "r", "t", and "p". Equation for nonuniform pressure distribution based on cylindrical coordinates (r, t, z): P (r, t, z) = 5 * "r" + sin ("t") + 2 * "z" Equation for nonuniform pressure distribution based on spherical coordinates (r, t, p): P (r, t, p) = "r" + 3 * sin ("t") + 2 * cos ("p")

Example: Nonuniform Pressure Distribution

Symbol Settings

Sets the color and size of pressure symbols

	Edit color	Select a color for the pressure symbols from the color palette.
	Symbol size	Use the spin arrows to change the size of the pressure symbols.
	Show preview	Turns on/off the display of pressure symbols.

Notes:

Example of nonuniform pressure distribution defined by a reference Cartesian coordinate system.

p(X,Y) = V* (A + B*X + C*Y + D*X*Y + E*X^2 + F*Y^2)

Where:

p(X,Y) = magnitude of pressure applied at a point with coordinates X and Y

V is the value specified in the Pressure value field.

X, Y = coordinates of the point relative to the selected Cartesian coordinate system. The coordinate values depend on the selected Units system.

* indicates multiplication