Spacing And Diameter Effects of Rivets in The Failure of Laminated Composite Joints
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Date
2010
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Addis Ababa University
Abstract
Composites have become very important engineering material due to their desirable properties such as high specific strength and light weight. In the use of composite materials for practical purposes, the formations of joints such as mechanical joints are unavoidable; and hence the formation of discontinuities such as holes for rivets or bolts. The aim of this research
is to investigate the effects of diameter and spacing (pitch and row spacing) of rivet/hole on composite laminate joints. Mechanical fasteners frequently reduce the load carrying capability of the structure and lead to premature failure. In this thesis, initial failure loads are evaluated with respect to rivet diameter and spacing as a measure of joint strength. The effects of these
two parameters are studied with consideration of other directly related parameters such as e/d, w/d and s/d ratios. Finite element analysis and the composite failure criterion Tsai-Wu are used in the study to determine failure loads and from the results obtained conclusions are driven.