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.
Original language | English |
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Pages (from-to) | 856-875 |
Number of pages | 20 |
Journal | Engineering Fracture Mechanics |
Volume | 76 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2009 May |
Keywords
- Elbow
- Finite element limit analysis
- Large geometry change
- Plastic load
- Twice-elastic-slope
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering