Definition Of Time Dependent Pressure In ANSYS Mechanical(Illustrated Expression)

In this article we will show how to define pressure values that dependent on time as a function in ANSYS Mechanical. You can assign pressure values that changes according to a function of time variable. You can assign realistic pressure values that dependent on time like real physical situations. Yoo know that the pressure is a boundry condition in finite element method(FEA) that is very important to define correctly to obtain real results.


How To Define Pressure Value As A Function Of 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 as time function 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 red arrow above then click on Pressure as shown by red box in ANSYS Mechanical.

Select faces of a feature to assign pressure as time function in ANSYS Mechanical.

To define a pressure that is function of time, you can only select faces or surfaces of the parts in ANSYS Mechanical as shown by red arrow. Because you need a geometric area to define pressure that is a time function in physical mean. Geometry selection for pressure that is a time function, 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, clck on Apply button in Geometry tab as shown by blue arrow above.

Select the Function method for time-dependent pressure in ANSYS Mechanical.

You can define the pressure value as Normal To, Components or Vector that can be selected from Define By section. We selected Normal To for this example. Click on little pop-up menu as shown by red arrow above, then click on Function method as shown in red box.

Enter the pressure function then specify Number Of Segments in ANSYS Mechanical.

Enter the pressure function value as shown by red box above. You need to write “time” for each variable inside the function. You can see the results of pressure function in each time step as shown by red arrow above.

Then enter a Number Of Segments as in green box for segmentation or row number of Tabular Data. You can see the Tabular Data segmented according to the entered number as shown by green arrow.

The definition of Pressure values as functions is very easy in ANSYS Mechanical like that.

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