Damage progression in mechanically fastened composite structural joints

Conference · Fri Dec 30 23:00:00 EST 1994

OSTI ID:89796

Minnetyan, L ^[1]; Chamis, C C; Murthy, P L.N. ^[2]

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1. Clarkson Univ., Potsdam, NY (United States). Dept. of Civil and Environmental Engineering
2. NASA-Lewis Research Center, Cleveland, OH (United States). Structures Div.

Progressive damage and fracture of a bolted graphite/epoxy composite laminate is evaluated via computational simulation. The objective of this paper is to demonstrate a new methodology that scales up constituent material properties, stress and strain limits to the structure level to evaluate the overall damage and fracture propagation for mechanically fastened composite structures. An integrated computer code is used for the simulation of structural degradation under loading. Damage initiation, growth, accumulation, and propagation to fracture are included in the simulation. Results show the damage progression sequence and structural fracture resistance during different degradation stages. The effect of fastener spacing is investigated with regard to the structural durability of a bolted joint.

• OSTI ID: 89796
• Report Number(s): CONF-9409291--; ISBN 1-56676-220-0
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BOLTED JOINTS
CARBON FIBERS
COMPOSITE MATERIALS
COMPUTERIZED SIMULATION
CRACK PROPAGATION
EPOXIDES
FINITE ELEMENT METHOD
FRACTURE PROPERTIES
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
PHYSICAL PROPERTIES
TENSILE PROPERTIES