Journal
COMPOSITE STRUCTURES
Volume 108, Issue -, Pages 129-136Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2013.09.019
Keywords
Bolted joints; Mechanical behavior; Finite element analysis (FEA)
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Funding
- National High Technology Research and Development Program of China [2012AA040209]
- National Science Foundation of China [10902004, 11372020]
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A novel characteristic curve determined by tensile, compressive and shear-out characteristic length is presented to predict failure load and failure mode of mechanically fastened composite joints. In contrast to the existing curves, the novel one introduces a shear-out characteristic length and provides capability to predict shear-out failure. A mathematics formulation of the novel curve is proposed based on the expression of Chang's characteristic curve and shear-out characteristic length. A series of tests were carried out and nonlinear finite element analyses were conducted to obtain the tensile, compressive and shear-out characteristic lengths for the novel curve. Following tensile tests of two-bolt and three-bolt joints were performed, and the failure loads and modes were numerically predicted by the characteristic curve method with the novel curve and Chang's. The numerical results obtained from the curve presented show good agreements with the experimental outcomes and better accuracy on both failure load and failure mode. (C) 2013 Elsevier Ltd. All rights reserved.
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