JOIN

ProductsAbaqus/StandardAbaqus/Explicit

Description

The JOIN connection makes the position of node b equal to that of node a. If the two nodes are not coincident initially, the Cartesian coordinates of node b relative to node a are fixed. See connection type CARTESIAN for a definition of the Cartesian coordinates of node b relative to node a. If rotational degrees of freedom exist at node a, the local directions corotate with the node.

The constraint force in the JOIN connection acts in the three local directions at node a and is

\bar{f} = f_{1} e_{1}^{a} + f_{2} e_{2}^{a} + f_{3} e_{3}^{a},

where $f_{3} = 0$ in two-dimensional analysis.

Friction

When used by itself, there is no predefined Coulomb-like friction in the JOIN connection, since there are no available components of relative motion for which friction can be defined. However, when the JOIN and REVOLUTE connection types are used together, the predefined friction is the same as the HINGE connection. When the JOIN and UNIVERSAL connection types are used together, the predefined friction is the same as the UJOINT connection.

Summary


JOIN
Basic, assembled, or complex:	Basic
Kinematic constraints:	$u_{1} = 0, u_{2} = 0, u_{3} = 0$
Constraint force output:	$f_{1}, f_{2}, f_{3}$
Available components:	None
Kinetic force output:	None
Orientation at a:	Optional
Orientation at b:	Ignored
Connector stops:	None
Constitutive reference lengths:	None
Predefined friction parameters:	None
Contact force for predefined friction:	None