Define a spatially-distributed force with a formula field

1. Choose Home tab→Loads and Conditions group→Load Type list→Force .

2. In the Force dialog box, from the Type list, select Normal.

3. Select the geometry or FE entity to which the force will be applied.

4. In the Magnitude group, in the Force box, type the total magnitude of the force.For example, if a force varies sinusoidally over the surface of a flat rectangular plate and has a total magnitude of 50 N, type 50.

5. In the Distribution group, from the Method list, select Spatial.

6. In the Distribution Field group, from the Specify Field list, select Formula Constructor .

7. In the Formula Field dialog box, from the Independent list, select the independent domain.For the example, select Cartesian.

8. In the Expressions box, type an expression that defines how the force varies with respect to the independent domain.For the example, suppose the sinusoidal variation of the force over the surface of the plate is one half cycle in the x-direction and one quarter cycle in the y-direction. If the length of the plate in the x-direction is 1000 mm, and the width of the plate in the y-direction is 100 mm, type:sin(180[degrees]*ug_var("x")/1000[mm])*sin(90[degrees]*ug_var("y")/100[mm])

9. Click Accept Edit .The expression is added to the Expressions list.

10. In the Formula Field dialog box, click OK.

11. In the Force dialog box, click OK.

The following graphic shows the resulting spatially distributed force.

The software scales the force distribution so that the integrated effect of the entire force distribution is equal to the value you specified for the magnitude.

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Define a spatially-distributed force with a formula field, Simcenter 3D 2021.1 Series

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