PLECS 3.7 Online Help

Translational Spring

Purpose

Ideal translational spring

Library

Mechanical / Translational / Components

Description

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The Translational Spring models an ideal linear spring in a translational system described with the following equations:

 F   =  - c⋅Dx
Dx   =  x - x0
d
dtx  =  v

where F   is the force flow from the unmarked towards the marked flange, x   is the displacement of the marked flange with respect to the unmarked one, and x0   is the equilibrium displacement.
Note  An translational spring may not be connected in series with a force source. Doing so would create a dependency between an input variable (the source force) and a state variable (the spring force) in the underlying state-space equations.

Parameters

Spring constant
The spring rate or stiffness c  , in Nm-  .
Equilibrium (unstretched) displacement
The displacement x0   between the two flanges of the unloaded spring, in meters.
Initial deformation
The initial deformation Dx0   of the spring, in meters.

Probe Signals

Torque
The spring force F  , in Newton (N).
Deformation
The spring deformation Dx  , in meters (m).