Documentation

Disassembled Prismatic

Primitive joint with misaligned base and follower axes containing one translational degree of freedom

Library

Joints/Disassembled Joints

Description

The Disassembled Prismatic block represents a single translational degrees of freedom (DoF) along a pair of specified misaligned axes between two bodies. SimMechanics™ simulation automatically assembles (aligns) the translation axes at simulation start when it defines a machine's assembled configuration.

Disassembled Prismatic Axes of Follower (blue) and Base (red)

Advanced Tab

The Advanced tab is optional. You use it to control the way SimMechanics simulation interprets the topology of your schematic diagram.

Mark as the preferred cut joint

In a closed loop, the simulation internally and automatically cuts one and only one joint.

If you want this particular joint to be weighted preferentially for cutting during the simulation, select the check box. The default is not selected.

Dialog Box and Parameters

The dialog has two active areas, Connection parameters and Parameters.

Connection Parameters

Current base

When you connect the base (B) connector port on the Disassembled Prismatic block to a Body CS Port on a Body, this parameter is automatically reset to the name of this Body CS. See the following figure, Disassembled Prismatic Base and Follower Body Connector Ports.

Current follower

When you connect the follower (F) connector port on the Disassembled Prismatic block to a Body CS Port on a Body, this parameter is automatically reset to the name of this Body CS. See the following figure, Disassembled Prismatic Base and Follower Body Connector Ports.

Disassembled Prismatic Base and Follower Body Connector Ports

Parameters

There is one Axes tab.

The entries on the Axes tab are required. They specify the directions of the two misaligned axes of the translational DoF that the Disassembled Prismatic represents.

Name

This column automatically displays the names of the two misaligned translation axes attached to base and follower bodies, respectively.

Axis of translation [x y z]

Enter here as two three-component vectors the two misaligned directional axes along which the base and follower bodies respectively can translate. The default vectors are [1 0 0] and [0 1 0], respectively. The axes are directed vectors whose overall signs matter.

Reference CS

Using the pull-down menu, choose the coordinate systems (World, the base Body CS, or the follower Body CS) whose coordinate axes the two vector axes of translation are oriented with respect to. The defaults are World.

 Restricted Parameters

See Also

Disassembled Cylindrical, Disassembled Revolute, Disassembled Spherical, Prismatic

See Modeling Degrees of Freedom for more on representing DoFs with Disassembled Joints.

See Checking Model Topology and How SimMechanics Software Works for more on closing loops with disassembled joints.

Was this topic helpful?