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Title: Damage progression in mechanically fastened composite structural joints

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.
Authors:
 [1] ; ;  [2]
  1. Clarkson Univ., Potsdam, NY (United States). Dept. of Civil and Environmental Engineering
  2. NASA-Lewis Research Center, Cleveland, OH (United States). Structures Div.
Publication Date:
OSTI Identifier:
89796
Report Number(s):
CONF-9409291--
ISBN 1-56676-220-0; TRN: IM9536%%226
Resource Type:
Conference
Resource Relation:
Conference: 9. technical conference of the American Society for Composites, Newark, DE (United States), 20-22 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the American Society for Composites: Ninth technical conference; PB: 1319 p.
Publisher:
Technomic Publishing Co., Inc., Lancaster, PA (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPOSITE MATERIALS; BOLTED JOINTS; FRACTURE PROPERTIES; CARBON FIBERS; EPOXIDES; COMPUTERIZED SIMULATION; CRACK PROPAGATION; MATHEMATICAL MODELS; FINITE ELEMENT METHOD; MECHANICAL PROPERTIES; PHYSICAL PROPERTIES; TENSILE PROPERTIES