Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
771101 | Engineering Fracture Mechanics | 2009 | 20 Pages |
Abstract
This paper quantifies the effect of the yield strength-to-elastic modulus ratio on twice-elastic-slope plastic loads for 90-degree elbows under in-plane and out-of-plane bending. Based on extensive and systematic finite element limit analyses using elastic-perfectly plastic materials, simple regression equations between the yield strength-to-elastic modulus ratio and twice-elastic-slope plastic loads for elbows under in-plane closing, in-plane opening and out-of-plane bending are proposed, and validated against published experimental data. Applicability of the proposed equations to circumferential cracked elbows under in-plane bending is also investigated.
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
Kuk-Hee Lee, Chang-Sik Oh, Yun-Jae Kim, Kee-Bong Yoon,