Engee documentation

Rotational Spring

The ideal spring in mechanical rotational systems.

rotational spring

Description

The Rotational Spring unit represents an ideal mechanical rotational spring described by the following equations:

φ

φφφφ

ωφ

Where:

Torque transmitted through the spring

Coefficient of elasticity

φ

Relative displacement (spring deformation)

φ

Initial position (spring displacement)

φφ

Absolute angular positions of ports R and C respectively

ω

Relative angular velocity

Time

The positive block direction is from port R to port C. This means that the torque is positive when it acts in the direction from R to C.

Ports

R - rod
`rotational mechanics

A mechanical port of rotation corresponding to a shaft, that is, a moving body.

C is the body
`rotational mechanics

A mechanical port of rotation corresponding to the case, i.e. a fixed body.

Parameters

`Spring rate, N*m/rad - elasticity coefficient
`10.0 N*m/rad (by default)

Elasticity coefficient.

Initial value of rotational velocity, rad/s - initial value of angular velocity
0.0 (by default)

Initial value of angular velocity.

Initial value of torque, N*m - initial value of torque
0.0 (By default)

Initial value of torque.

Initial value of deformation, rad - initial value of deformation
0.0 (By default)

Initial value of deformation.