Translational Spring
Ideal spring in mechanical translational systems
Library
Mechanical Translational Elements
Description
The Translational Spring block represents an ideal mechanical linear spring, described with the following equations:
where
F | Force transmitted through the spring |
K | Spring rate |
x | Relative displacement (spring deformation) |
xinit | Spring initial displacement (initial deformation); the spring
can be initially compressed (xinit >
0 ) or stretched (xinit <
0 ) |
xR,xC | Absolute displacements of terminals R and C, respectively |
v | Relative velocity |
t | Time |
The block positive direction is from port R to port C. This means that the force is positive if it acts in the direction from R to C.
Variables
To set the priority and initial target values for the block variables prior to simulation, use the Initial Targets section in the block dialog box or Property Inspector. For more information, see Set Priority and Initial Target for Block Variables.
Nominal values provide a way to specify the expected magnitude of a variable in a model. Using system scaling based on nominal values increases the simulation robustness. Nominal values can come from different sources, one of which is the Nominal Values section in the block dialog box or Property Inspector. For more information, see Modify Nominal Values for a Block Variable.
Parameters
- Spring rate
Spring rate. The default value is
1000
N/m.
Ports
The block has the following ports:
R
Mechanical translational conserving port.
C
Mechanical translational conserving port.
Extended Capabilities
Version History
Introduced in R2007a