# Time Function Force Definition In ANSYS(Illustrated Expression)

In this article of Mechanicalland, we will show how to define forces on parts or geometries in ANSYS® Mechanical as a time function. You can define forces that change according to a time-dependent function. So you can model the real physical model in ANSYS® Mechanical. You know that the force is a boundary condition in finite element analysis(FEA). So the definition of force properly is a very important fact to obtain realistic and correct results.

YOU CAN LEARN ANSYS® IN MECHANICAL BASE; Click And Start To Learn ANSYS®!

On this post

## How To Define Force That Is Time-Dependent Function in ANSYS® Mechanical?

To assign a force as a function to your part in ANSYS® Mechanical, you need to open the Mechanical interface. In this Mechanical interface, you need to right-click to your analysis system(in this example, it is Static Structural) as shown above. Then you need to hover your Mouse at Insert as shown, then click on the Force as shown by the blue box above in ANSYS® Mechanical.

Select your feature in your part such as selected as a face as in this example above as shown by the blue arrow. The geometry selection as done by the Geometry tab in time-dependent force assignation that changes with time command as shown by the red arrow. When you select the face to apply force, click apply in the Geometry tab in ANSYS® Mechanical.

You can define force value to your geometry as Components and Vector. In this example, we selected Vectors to define our force as a function. Click om little pop-up menu as shown by the red arrow above then click on Function method as shown in the red box.

Enter the function value of force as shown in the red box above. You need to use “time” as a variable, the function will change as “time” changes. The result of the function in a table is shown with the red arrow above in ANSYS® Mechanical.

Select the direction of force as shown by the red box above, then click Apply as shown by the red arrow above in ANSYS® Mechanical.

Define the segmentation or row number of Tabular Data from the red box above. The result of the change is shown by the red arrow. You can see the change.

The time segmentation is defined by the Number Of Segments section that is shown in the red box above. Also, Force values are defines according to these times.

## Conclusion

The definition of forces as a function of time values is very basic like above in ANSYS® Mechanical.

Do not forget to leave your comments and questions below about the definition of forces as a function of time values in ANSYS® Mechanical.

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