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Defining Pressure That Changes With Time In ANSYS® Mechanical(Illustrated Expression)

In this article, we will show how to define a pressure to bodies, surfaces, faces of a feature in ANSYS® Mechanical that changes with time. Defining pressure according to time as a tabular basis is very easy in ANSYS® Mechanical. Also, Pressure is a boundary condition in finite element analysis(FEA) which makes the correctness of that value is very important for healthy analysis.


How To Define A Pressure That Changes With Time In ANSYS® Mechanical?

Select pressure from the list above in ANSYS® Mechanical.

First of all, you need to open the ANSYS® Mechanical interface to assign pressure values that change with time to parts. Right-click on the analysis system in ANSYS® Mechanical interface(Static Structural in this example). Hover your Mouse on the Insert section as shown by the red arrow above then click on Pressure as shown by the red box in ANSYS® Mechanical.

Select faces of a feature to assign pressure that changes with time in ANSYS® Mechanical.

To define a pressure, you can only select faces or surfaces of the parts in ANSYS® Mechanical as shown by the red arrow. Because you need a geometric area to define pressure that changes with time in the physical mean. Geometry selection for the pressure that changes with time, you need to activate geometry tab as shown by red box above then you can select a face or surface of a part in ANSYS® Mechanical.

Select your faces then click apply.

After the selection of faces or surfaces of parts in ANSYS® Mechanical, click on the Apply button in the Geometry tab as shown by the red arrow above.

Click on Tabular method in Pressure.

Select one of the defining methods from the Define By tab around; Components, Vector, or Normal To. In this example, we selected Components. After that, click on the little pop-up menu as shown by the red arrow above, then click on the Tabular(Time) option for it.

Select Tabular Data for each components.

Do the same thing that showN the former step for each X, Y, and Z components as shown by the red box above in ANSYS® Mechanical.

Define the whole pressure values in ANSYS® Mechanical.

After opening the Tabular Data option for whole coordinates, you can add time rows by entering a time to the last row as shown by the red arrow, then press Enter from your keyboard to define pressure values for it. And you can enter pressure values for every coordinate in every time period as shown in the red box above.


Definition of various pressure values in changing time in ANSYS® Mechanical is easy like that. You can build real physical conditions that changing with time in ANSYS® Mechanical with this technique.

Do not forget to leave your comments and questions below about the various pressure values in changing time in ANSYS® Mechanical.

NOTE: All the screenshots and images are used in educative and informative purposes. Images used courtesy of ANSYS, Inc.

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