A design methodology for mechanically fastened joints in laminated composite materials

0205 materials engineering Ciências da engenharia e tecnologias::Engenharia dos materiais Engenharia de materiais, Engenharia dos materiais Materials engineering, Materials engineering Engineering and technology::Materials engineering 02 engineering and technology 0210 nano-technology
DOI: 10.1016/j.compscitech.2006.02.017 Publication Date: 2006-04-05T14:46:34Z
ABSTRACT
This paper presents a new methodology to predict the onset of damage, final failure and failure mode of mechanically fastened joints in composite laminates. The stress distribution at each ply is obtained using semi-analytical or numerical methods. The elastic limit of the joint is predicted using the ply strengths and stress distribution in failure criteria. Final failure and failure mode are predicted using point or average stress models. Standardized procedures to measure the characteristic distances used in the point or average stress models are proposed. The methodology proposed is applicable in double-shear joints using quasi-isotropic laminates. The predictions are compared with experimental data obtained in pin- and bolt-loaded joints, and the results indicate that the methodology proposed can accurately and effectively predict ultimate failure loads as well as failure modes in composite bolted joints.
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