Conn-Rod Mechanism

A connecting rod mechanism converts rotating motion to reciprocating motion or vice versa. Calculate the position, velocity, and acceleration of the connecting rod based on crank parameters and angular position.

Conn-Rod Mechanism Calculator

The connecting rod mechanism converts rotating motion to reciprocating motion (or vice versa). This calculator computes the position, velocity, and acceleration of the rod.

Key Parameters:

  • r = radius of crank (m)
  • l = length of rod (m)
  • φ = angular position of crank (rad)
  • ω = crank angular velocity (rad/s)

Formulas:

  1. Position: s = r(1 - cos(φ)) + (λ/2)r sin²(φ)
  2. Velocity: v = ωr sin(φ)(1 + λ cos(φ))
  3. Acceleration: a = ω²r(cos(φ) + λ cos(2φ))

where λ = r/l (crank ratio)

Calculator

Inputs

Results

Crank Ratio (λ)-- -
Position (s)-- m
Velocity (v)-- m/s
Acceleration (a)-- m/s²
Conn-Rod Mechanism | MEPKit Engineering Tools | MEPKit