structure link attach command

Syntax

structure link attach keyword ... <range>

Primary keywords:

x    y    z    rotation    rotation-x    rotation-y    rotation-z

Set attachment conditions for the specified link directions. The current attachment condition will be replaced by the condition specified here. Conditions are specified in keyword pairs, the first (keyword) being the degree-of-freedom and the second ([linkattachblock]) being the type of condition to use. The following keywords are available to specify the degree-of-freedom.

x [linkattachblock]

Set the translational \(x\)-direction, also degree-of-freedom 1.

y [linkattachblock]

Set the translational \(y\)-direction, also degree-of-freedom 2.

z (3D ONLY) [linkattachblock]

Set the translational \(z\)-direction, also degree-of-freedom 3.

rotation (2D ONLY) [linkattachblock]

Set rotation.

rotation-x (3D ONLY) [linkattachblock]

Set the rotational \(x\)-direction, also degree-of-freedom 4.

rotation-y (3D ONLY) [linkattachblock]

Set the rotational \(y\)-direction, also degree-of-freedom 5.

rotation-z (3D ONLY) [linkattachblock]

Set the rotational \(z\)-direction, also degree-of-freedom 6.

Keyword Block

The attachment condition is given by the following values, which are applied to: rotation, rotation-x, rotation-y, rotation-z, x, y and z.

free

free

linear

deformable linear spring

normal-yield

deformable normal-yield spring

pile-yield

pile yield spring. This is only available in the \(x\) or \(y\) translational degrees-of-freedom, and the dependent model is automatically installed in \(y\) or \(z\), respectively.

rigid

rigid

shear-yield

shear yield deformable spring (only available in translational degrees-of-freedom)