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http://dx.doi.org/10.20466/KPVP.2020.16.1.001

Proposal of a Simulated Test Method for the Evaluation of Deformation and Failure Characteristics of Pipe Elbows under Cyclic Loads  

Kim, Jin Weon (조선대학교 원자력공학과)
Lee, Dae Young (한국전력기술(주) 미래전력기술연구소)
Park, Heung Bae (한국전력기술(주) 미래전력기술연구소)
Publication Information
Transactions of the Korean Society of Pressure Vessels and Piping / v.16, no.1, 2020 , pp. 1-10 More about this Journal
Abstract
This study proposed a simulated test method using ring specimen to evaluate the deformation and failure characteristics of pipe elbows under a large amplitude cyclic load. The validity of the test method was demonstrated by finite element (FE) analysis of pipe elbow and ring specimen under cyclic loads. The results showed that the proposed test method adequately simulates the distribution of circumferential strain at crown of pipe elbows where cracks occur under cyclic loads and presents the cyclic hardening behavior of pipe elbows. The parametric FE analysis showed that consistent simulated test results could be obtained when the test section of the ring specimen is longer than 1/2 of the inner diameter of the ring specimen and the radius of the inner loading jig is less than 1/4 of the inner diameter of the specimen.
Keywords
Pipe Elbow; Cyclic Loads; Simulated Test; Deformation Characteristics; Failure Characteristics;
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Times Cited By KSCI : 2  (Citation Analysis)
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