Reliability calculation for interference fit of connecting rod small end bushing

The interference fit of connecting rod small end bushing decreases with working time increasing in complex working conditions,the bushing looseness is one of main failure mode for connecting rod small end bearing.In order to analyse the reliability for interference fit of connecting rod small end bushing,the residual fixation force is represented by the initial fixation force minus the fixation force attenuation.The initial fixation force,the fixation force attenuation and the working load as a random variable,assumption of they follow normal distribution,the density function of residual fixation force and working load have been educed.The probability that residual fixation force greater than the working load as the reliability of interference fit,presented the reliability calculation method for interference fit of connecting rod small end bushing.