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XYZ Translational

Joint allowing three translational degrees of freedom

 

Description

Connections

Parameters

See Also

Description

A translational joint, sometimes called a 3-DOF joint, is shown in the diagram below with two reference frames at either end of the connection: x1y1z1on body 1, and x2y2z2on body 2. The translational joint allows free relative translation of the two frames, but constrains the relative rotation completely. Thus, the x2y2z2 axes remain parallel to the x1y1z1axes, respectively, during the motion of the system. The translation of the end frame, x2y2z2,relative to the start frame, x1y1z1,is represented by the vector, r, which is resolved into its three components in the x1y1z1 frame.

Connections

Name

Description

framea

Joint inboard frame

frameb

Joint outboard frame

Parameters

Symbol

Default

Units

Description

Modelica ID

ICr,v

Ignore

-

Indicates whether MapleSim ignores, tries to enforce, or strictly enforces the translational initial conditions

MechTranTree

r&conjugate0;0

0,0,0

m

Initial displacement of the joint at the start of the simulation, expressed along the x-, y-, and z-axis of the inboard frame respectively

InitPos

v&conjugate0;0

0,0,0

ms

Initial velocity of the joint at the start of the simulation, expressed along the x-, y-, and z-axis of the inboard frame respectively

InitVel

See Also

Joints and Motions

Multibody Overview