A tension-mode fracture model for bolted joints in laminated composites
Book
·
OSTI ID:55369
- Univ. of Turabo, Gurabo (Puerto Rico). Mechanical Engineering Dept.
- Southern Methodist Univ., Dallas, TX (United States). Civil and Mechanical Engineering Dept.
- Lockheed Aerospace, Fort Worth, TX (United States)
A failure prediction model for bolted joints in generally orthotropic laminated composite plates that fail in the tension mode under bearing loading conditions has been developed. The plate is analyzed as a bulk orthotropic plate whose material properties are determined through the application of classical lamination theory to facilitate practical application of the model. Ply-by-ply laminated analysis is not required. Fracture mechanics concepts are applied to a pseudo-flaw which is related to the physical cracking of the laminate at the joint. The maximum circumferential stress concept is extended to orthotropic materials where both the fracture toughness and stress intensity vary with orientation. Excellent correlation between experimental tests conducted on single-bolt joints for two laminate layups and analytical prediction was found.
- OSTI ID:
- 55369
- Report Number(s):
- CONF-9310328--; ISBN 1-56676-232-4
- Country of Publication:
- United States
- Language:
- English
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