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- Title
Buckling phenomenon for imperfect pipe under pure bending.
- Authors
Yudo, Hartono; Yoshikawa, Takao
- Abstract
The buckling phenomenon for imperfect pipe under bending has been investigated by nonlinear FEA, considering the effect of a cross sectional oval deformation by changing the variables of pipes, that is, L/ D varying from 2.5 to 20, D/ t varying from 50 to 200, and imperfection ( δ/ t) varying from 0.05 to 0.5. As well as the elastic buckling, the elasto-plastic buckling was investigated. From the calculation results, the followings were found. The reduction of buckling moment due to imperfection is larger in short pipe than in long pipe. The effect of imperfection for pipes with large values of D/ t is larger than those with small values of D/ t if L/ D of both pipes is same. The effects of imperfection for elastic analysis are larger than elasto-plastic analysis. The buckling moment reduces more by the imperfection of buckling mode than by that of oval mode.
- Subjects
MECHANICAL buckling; MATERIAL plasticity; BENDING (Metalwork); PIPE; MARINE sciences
- Publication
Journal of Marine Science & Technology, 2015, Vol 20, Issue 4, p703
- ISSN
0948-4280
- Publication type
Article
- DOI
10.1007/s00773-015-0324-3