Extended modules > Creo Elements/Direct Finite Element Analysis > Apply loads and boundary conditions > Global loads
  
Global loads
Gravity loading
This section describes natural gravitational forces acting on a part. The figure shows the result of gravity loading on a steel girder constrained at both ends. (The Results and Mesh check boxes are clicked in the Show Properties dialog box.)
1. Click FEA and then, in the Mechanical LBC group, click Global Loads. The Global Loads dialog box opens.
2. Click Gravity in Translational. The Gravity dialog box opens.
3. If necessary, give the study a name.
When no name has been earlier provided, you can click Study and enter a new one in the highlighted field.
a. Click Name. Creo Elements/Direct Finite Element Analysis suggests a name for the current gravity loading in the Name box. You can accept the proposed name or type a new one in the highlighted box.
b. If necessary, enter a value in the Value box. The default value (Earth's gravitational force) can be changed in the customization file.
c. Click Direction and use the 3D CoPilot to specify the gravity-loading direction.
d. If necessary, select a coordinate system.
4. Click to apply the gravity loading.
Acceleration loading
This section describes the type of accelerating forces that can be applied to a part. The figure shows the result of an acceleration loading on a steel girder constrained at one end. (The Results check box is clicked and the Mesh check box is cleared in the Show Properties dialog box.)
1. Click FEA and then, in the Mechanical LBC group, click Global Loads. The Global Loads dialog box opens.
2. Click Acceleration in Translational. The Acceleration dialog box opens.
3. If necessary, give the study a name.
When no name has been earlier provided, you can click Study and enter a new one in the highlighted field.
4. Click Name. Creo Elements/Direct Finite Element Analysis suggests a name for the current acceleration loading in the Name box. You can accept the proposed name or type a new one in the highlighted box.
5. Enter a value in the Value box.
6. Click Direction and use the 3D CoPilot to specify the gravity-loading direction.
7. If necessary, select a coordinate system.
8. Click to apply the acceleration loading.
Spin loading
This section describes the type of spin forces that can be applied to a part. After you specify spin loading on a model, Creo Elements/Direct Finite Element Analysis applies centrifugal forces. No actual rotating of the model is done. The model must be fully constrained to avoid any rigid body motions.
1. Click FEA and then, in the Mechanical LBC group, click Global Loads. The Global Loads dialog box opens.
2. Click Spin in Rotational. The Spin dialog box opens.
3. If necessary, give the study a name.
When no name has been earlier provided, you can click Study and enter a new one in the highlighted field.
4. Click Name. Creo Elements/Direct Finite Element Analysis suggests a name for the current spin loading in the Name box. You can accept the proposed name or type a new one in the highlighted field.
5. Enter a value in the Value box.
6. Click Axis and use the 3D CoPilot to specify the spin direction.
7. Click to apply the spin loading.
The figure shows the result of a cam spinning about an axis. In this case, face constraints (Cylindrical) were applied as shown.