The Prescribed Displacement node adds a condition where the displacements are prescribed in one or more directions to the geometric entity (domain, boundary, edge, or point).

Select a Notation — Standard or General.

To define the displacements individually, click the Standard notation button.

Select one or all of the Prescribed in x direction, Prescribed in y direction, Prescribed in z direction check boxes (only applicable check boxes are shown based on the spatial dimension). Then enter a value or expression for the corresponding inputs u0, v0, and w0. For axisymmetric components, select one or both of the Prescribed in r direction and Prescribed in z direction check boxes. Then enter a value or expression for u0 and w0. When twist is included in 2D axisymmetry, the circumferential displacement can also be prescribed.

In 3D, 2D, or 2D axisymmetry, click the General notation to specify the displacements using a general notation that includes any linear combination of displacement components. For example, for 2D components, use the relationship

For H matrix H select Isotropic, Diagonal, Symmetric, or Full and then enter values as needed in the field or matrix. Enter values or expressions for the R vector R.

For example, to achieve the condition u = v, use the settings

which force the domain to move only diagonally in the xy-plane.

To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box.

Physics tab with Solid Mechanics selected:

Physics tab with Membrane selected:

Physics tab with Truss selected:

Physics tab with Wire selected:

Physics tab with Multibody Dynamics selected:

Physics tab with Thin Layer node selected in the model tree: