Progressive damage and fracture of adhesively bonded fiber composite pipe joints
- National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
- Clarkson Univ., Potsdam, NY (United States)
In recent years laminated composite pipes have been used for various offshore oil production functions. Progressive damage and fracture of an adhesively bonded fiber composite thin-walled pipe joint is evaluated via computational simulation. An integrated computer code that scales up constituent micromechanics level material properties to the structure level and accounts for all possible failure modes is used for the simulation of composite degradation under loading. Damage initiation, growth, accumulation, and propagation to structural fracture are included in the simulation. Results show the damage progression sequence and structural fracture resistance during different degradation stages. Design implications with regard to damage tolerance of composite pipe joints are examined. Influences of the type of loading as well as local geometry and laminate configuration effects on damage initiation and progression are investigated. An adhesively bonded tubular joint is examined under internal pressure, off-axis bending, and combined loading. This paper demonstrates that computational simulation, with the use of established material modeling and finite element modules adequately tracks the damage growth and subsequent propagation to fracture for composite pipe joints.
- OSTI ID:
- 376029
- Report Number(s):
- CONF-960154--; ISBN 0-9648731-8-4
- Country of Publication:
- United States
- Language:
- English
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