Effect of radial clearance between bolt and washer on the bearing strength of composite bolted joints

Journal Article · Wed Jan 01 04:00:00 EST 1992 · Journal of Composite Materials; (United States)

DOI:https://doi.org/10.1177/002199839202601208· OSTI ID:7164865

Herrington, P D; Sabbaghian, M ^[1]

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1. Louisiana State University, Baton Rouge (United States)

When composite materials are bolted together, the relative diameters of the bolt hole, the constraining washer and the bolt itself have a profound effect on the ultimate bearing strength. Previous studies have investigated the effects of clearance between the bolt and the hole diameter. In this study, the effect of the difference between the bolt diameter and the inside diameter of the washer, which provides the lateral constraint at the edge of the hole, is examined. To explain the significant variation of bearing strength with bolt-to-washer clearance, a model is proposed to explain the mechanics of load transfer and the lateral deformation at the edge of the hole. The test results, using a quasi-isotropic graphite epoxy laminate, support the proposed model and provide data for designers. 16 refs.

• OSTI ID: 7164865
• Journal Information: Journal of Composite Materials; (United States), Journal Name: Journal of Composite Materials; (United States) Vol. 26:12; ISSN JCOMBI; ISSN 0021-9983
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360603* -- Materials-- Properties
BOLTED JOINTS
COMPOSITE MATERIALS
EPOXIDES
FABRICATION
FASTENING
FRICTION
JOINING
JOINTS
MATERIALS
MECHANICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ULTIMATE STRENGTH