Three-Dimensional Analysis of Double Rivet-Row Lap Joints: Part I — Non-Countersunk Rivets

Abstract

Three-dimensional finite element analysis of an elastic, double rivet-row, aluminum alloy lap joint with non-countersunk aluminum rivets, is presented. The compliance of the connection, rivet tilt, peak contact pressures and slip amplitudes, in the absence of interference and clamp-up, are described. Rivet-panel slips in the double-row assembly are between 50–60% of those calculated for the single-row case. Contrary to the expectation that the second row of rivets might reduce the stress concentration factor by half, the additional row of rivets provides a reduction of only 28%.