Defining a Coriolis force

You can create a Coriolis force load to define loads resulting from rotation of the model. You must specify the force as the product of the material density (mass per unit volume) for solid and shell elements or the mass per unit length for beam elements and the angular velocity in radians per time. The load definition must include an axis of rotation, which is defined as follows:

  • If you are working in three-dimensional space, you define the location and direction of the axis by entering the global coordinates of two points.

  • If you are working in two-dimensional space, you specify the location of the axis by entering the coordinates of a point in the plane. The direction of the axis is always out of the plane.

  • If you are working in axisymmetric space, the axis is always in the location and direction of the positive global Z-axis.

Related Topics
Creating and modifying prescribed conditions
Understanding symbols that represent prescribed conditions
Using analytical expression fields
Creating expression fields
In Other Guides
Specifying loads due to rotation of the model in Abaqus/Standard

  1. Display the Coriolis force load editor using one of the following methods:

    • To create a new rotational body force load, follow the procedure outlined in Creating loads (Category: Mechanical; Types for Selected Step: Coriolis force).

      If you are working in two- or three-dimensional space, enter in the prompt area the required information concerning the location and, if applicable, direction of the axis of rotation.

    • To edit an existing Coriolis force load using menus or managers, see Editing step-dependent objects. To edit the region to which the load is applied, see Editing the region to which a prescribed condition is applied.

      If you are editing a load in the step in which it was created, an Edit ( ) button appears next to each point you specified in the load editor. Click if you want to change the coordinates that determine the location and, if applicable, direction of the axis of rotation. (This option applies only if you are working in two- or three-dimensional space.)

  2. Click the arrow to the right of the Distribution field, and select the option of your choice from the list that appears:

    • Select Uniform to define a load that is uniform over the body.

    • Select an analytical field to define a spatially varying load. Only analytical fields that are valid for this load type are displayed in the selection list. Alternatively, you can click to create a new analytical field. (See The Analytical Field toolset for more information.)

  3. In the Coriolis force field, enter the magnitude of the force.

  4. If desired, click the arrow to the right of the Amplitude field, and select the amplitude of your choice from the list that appears. Alternatively, you can click to create a new amplitude. (See The Amplitude toolset for more information.)

  5. Click OK to save your data and to exit the editor.