Elastic-plastic fracture of cylindrical shells containing a part-through circumferential crack

Journal Article · Mon Nov 01 04:00:00 EST 1982 · J. Pressure Vessel Technol.; (United States)

DOI:https://doi.org/10.1115/1.3264224· OSTI ID:6058385

Ezzat, H; Erdogan, F

The problem of fatigue crack propagation and ductile fracture of a cylindrical shell containing a macroscopic circumferential flaw is considered. The main interest in the study is in applications to line pipes and other cylindrical containers under secondary axial stresses in addition to the primary stresses coming from the internal pressure. The stress intensity factor for the part-through crack used in analyzing and correlating the fatigue crack propagation rate is obtained by using a line spring model in conjunction with Reissner's shell theory. To analyze the ductile fracture instability and to correlate the experimental and theoretical results, the crack mouth opening displacement is used as the parameter. The limited data on fatigue crack propagation give the expected result, namely that the crack propagation rate in pipes may be predicted from the fatigue results performed on simpler geometries provided the stress intensity factors in pipes are calculated with sufficient accuracy. 14 references.

• OSTI ID: 6058385
• Journal Information: J. Pressure Vessel Technol.; (United States), Journal Name: J. Pressure Vessel Technol.; (United States) Vol. 104:4; ISSN JPVTA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
CRACK PROPAGATION
CYLINDERS
DATA
EXPERIMENTAL DATA
FAILURES
FATIGUE
FEASIBILITY STUDIES
FRACTURE MECHANICS
FRACTURE PROPERTIES
FRACTURES
INFORMATION
MATERIALS TESTING
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MECHANICS
NUMERICAL DATA
PIPELINES
PIPES
STRESS ANALYSIS
STRESS INTENSITY FACTORS
STRESSES
TESTING
THEORETICAL DATA