Abstract
An analysis of a model of the process of cold-driving a rivet is carried out with the primary aim of identifying the origin and magnitude of the resulting clamping force exerted by the rivet on the lapped sheets. The development of high hydrostatic pressure in the rivet shank in the first stages of the driving process, and its subsequent release as the rivet head is squashed, is the key to understanding the origin of the clamping force. The average clamping stress in the rivet shank is on the order of σ Y 4 , where σ Y is the yield stress of the rivet. The model is used to explore the role of some riveting variables, including differing yield stresses in the rivet and sheet materials, strain hardening, and head size.
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