Prismatic
Joint allowing one translational degree of freedom along a given axis
Description
Connections
Parameters
See Also
A prismatic joint, sometimes called a slider or translational joint, is shown in the diagram below with the two bodies that it connects. A prismatic joint allows a single relative translation of the two connected frames; this joint prevents all of the other relative motions of the two frames. In the diagram below, the joint displacement, s, represents the relative translation of the end frame, x2y2z2, with respect to the start frame, x1y1z1. In this example, both x1 and x2 remain parallel to the joint axis during the motion of the two bodies.
The following figure shows how the prismatic joint is represented in the 3-D Workspace and the 3-D Playback Window.
Name
framea
Joint inboard frame
frameb
Joint outboard frame
flangea
Inertial reference frame for 1-D translational components
flangeb
Translation of joint. Connects to 1-D translational components
Symbol
Default
Units
Modelica ID
e^1
1,0,0
Axis along which the joint allows translational motion, expressed in the inboard frame
TranAxis
Ks
0
Nm
Spring constant
Kspring
L0
m
Unstretched length of the translational spring
Kⅆ
N⋅sm
Damping constant
Kdamper
ICs,v
Ignore
Indicates whether MapleSim ignores, tries to enforce, or strictly enforces the translational initial conditions
MechTranTree
s0
Initial displacement of the joint at the start of the simulation, expressed along the e^1axis
InitPos
v0
ms
Initial velocity of the joint at the start of the simulation, expressed along the e^1axis
InitVel
Joints and Motions
Multibody Overview
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