This document discusses dynamic force analysis and approximate analytical methods for calculating the angular acceleration of a connecting rod. It defines key terms used in the analysis, including the length of the connecting rod, radius of the crank circle, inclination of the connecting rod, and the ratio of length to radius. The document appears to be from a professor providing information on analyzing connecting rod motion in internal combustion engines.

1. Unit-III
Dynamic Force Analysis
Dr. Ambuj Saxena
Associate Professor
Department of Mechanical Engineering
G. L. Bajaj Institute of Technology and Management
Plot No. 2, Knowledge Park III,
Greater Noida, Distt. G.B.Nagar (U.P.) India -201306
Theory of Machines
(RME-602)

2. l = Length of connecting rod between the centers,
r = Radius of crank or crank pin circle,
∅ = Inclination of connecting rod to the line of stroke PO, and
n = Ratio of length of connecting rod to the radius of crank = l/r.
Approximate Analytical Method for angular
acceleration of the Connecting Rod

3. l = Length of connecting rod between the centers,
r = Radius of crank or crank pin circle,
∅ = Inclination of connecting rod to the line of stroke PO, and
n = Ratio of length of connecting rod to the radius of crank = l/r.
Approximate Analytical Method for angular
acceleration of the Connecting Rod

4. l = Length of connecting rod between the centers,
r = Radius of crank or crank pin circle,
∅ = Inclination of connecting rod to the line of stroke PO, and
n = Ratio of length of connecting rod to the radius of crank = l/r.
Approximate Analytical Method for angular
acceleration of the Connecting Rod

5. l = Length of connecting rod between the centers,
r = Radius of crank or crank pin circle,
∅ = Inclination of connecting rod to the line of stroke PO, and
n = Ratio of length of connecting rod to the radius of crank = l/r.
Approximate Analytical Method for angular
acceleration of the Connecting Rod