| Autor: |
Yapa, Ruslan, Panedpojaman, Pattamad, Srisuwan, Chatchawin |
| Předmět: |
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| Zdroj: |
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ); Oct2024, Vol. 49 Issue 10, p13787-13800, 14p |
| Abstrakt: |
The design of fixed offshore structures for wind turbines with a common joint configuration has been widely adopted for the past few decades. A completely overlapped tubular joint (COJ) is usually proposed as a replacement of a common joint in the design as it possesses a higher ultimate joint capacity. However, very few detailed guidelines were available as recommended design practices, so were relative research studies on COJs. This study aims at deriving a new design equation of COJ capacity based on a failure mechanic model of through-wall plastification. A symmetry of three-hinge mechanic model was applied in the derivation. An empirical study of effective width of the joint was achieved through parametric study on a validated finite element model. The influence of geometric parameters upon the joint capacity was investigated. The through-brace inclined angle, the lapped-through-brace diameter ratio and thickness ratio were found to be proportional to the joint capacity. Meanwhile, the gap of short segment and the slenderness ratio of the through brace were inversely proportional to the joint capacity. An assessment on the proposed design equation revealed that it obeys the finite element capacity on the conservative side and appears to be more accurate than the existing TY-joint equation in other design codes and parametric equations available in the literature. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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