Abstract
A nonlinear vibration analysis of the slider-crank mechanism used in reciprocating machines such as internal-combustion engines and air compressors is formulated by the principles of variational mechanics. A dynamically equivalent system is employed in which the connecting rod is modelled as a pendulum oscillating about a reciprocating piston and an approximate solution is derived by an application of the Ritz averaging method. Numerical results for a typical example are presented and discussed.