Analysis of an Interference-Fit Pin Connection

Under a simplifying but reasonably justified assumption of noninterference from the adjoining pins, a mathematical analysis of an interference-fit pin connection in a backplane for the initial contact force is presented. Effects of pin shape, stiffness, interference fit, hole shape, and plate material are included in the study. A closed form solution is obtained for estimating the initial contact force in the joint, thus eliminating the need for complicated numerical techniques generally used for such complex problems. Numerical results of initial radial forces for different pin and plate parameters are presented. An example of a lanced compliant pin is discussed.