crankrod

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crankrod

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Library

Iconic Diagrams\Mechanical\Rotation\Gears

Iconic Diagrams\Mechanical\Translation\Transmission

Use

Domains: Continuous. Size: 1-D. Kind: Iconic Diagrams (Translation).

Description

CrankRod

This models represents a crank and rod mechanism. The mechanism is ideal, i.e., it does not have inertia, friction or geometrical limitations. It has one rotation port (p_in) and one translation port (p_out). The causality of this model is always mixed: one port has a force out causality while the other has a velocity out causality:

 

p_in.T = i * p_out.F

p_out.v = i * p_in.omega

 

The transmission ratio (i) is the ratio of the velocities of both ports. It is a function of the shaft angle, the crank length and the rod length.

Interface

Ports

Description

p_in

p_out

Driving axis (Rotation)

Output port with resulting motion (Translation)

Causality

 

fixed torque out p_in

fixed velocity out p_out

 

Parameters

 

crank_length

rod_length

Crank length [m]

Rod length [m]