풍력터빈 지지구조물의 볼트 체결된 L형 플랜지에 대한 인장 실험 및 FE해석
Tensile Experiment and FE Analysis of L-type Flange Bolt Connection in Wind Turbine Support Structures
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
In this study, a tensile test and FE analysis were conducted on a bolt-connected L-shaped flange to evaluate its behavior and load resistance. A total of five specimens were manufactured using the inner and outer distances and bolt diameters of the L-type flange as experimental variables. As a result of the tensile test of the L-shaped flange, as the internal and external length ratio (b/a) increased, the maximum load decreased and the maximum displacement increased. As the diameter (d) of the bolt increased, the maximum load and the deformation of the wall increased. The shapes of the destruction specimens showed two forms of destruction: one due to the fall of the nut and the surrender of the bolt as the thread of the bolt and nut was worn out, followed by the surrender of the wall. As a result of FE analysis, it was found that elasto-plastic model (EPM) analysis similarly tracks the behavior of the tensile test results.
Abstract
In this study, a tensile test and FE analysis were conducted on a bolt-connected L-shaped flange to evaluate its behavior and load resistance. A total of five specimens were manufactured using the inner and outer distances and bolt diameters of the L-type flange as experimental variables. As a result of the tensile test of the L-shaped flange, as the internal and external length ratio (b/a) increased, the maximum load decreased and the maximum displacement increased. As the diameter (d) of the bolt increased, the maximum load and the deformation of the wall increased. The shapes of the destruction specimens showed two forms of destruction: one due to the fall of the nut and the surrender of the bolt as the thread of the bolt and nut was worn out, followed by the surrender of the wall. As a result of FE analysis, it was found that elasto-plastic model (EPM) analysis similarly tracks the behavior of the tensile test results.
참고문헌 (9)
- "IEC 61400-6, Wind Energy Generation Systems - Part 6 : “Tower and Foundation Design Requirements”", International Electrotechnical Commission, 81~87 (2020)
- Petersen, C., "Stahlbau - Grundlagen der Berechnung und baulichen Ausbildung von Stahlbauten" (1988), Vieweg-Verlag
- Y. Ma, "Wind Turbine Tower Collapse Cases”: A Historical Overview, Institution of Civil Engineers", Proceedings. Structures and Buildings (2018)
- E. L. Grimsmo, "Failure modes of bolt and nut assemblies under tensile loading", J Constr Steel Res, 126(2016), pp.15~25 (2016)
- American Petroleum Institute(API), "Recommended practice for planning, designing and constructing fixed offshore platforms-Working Stress Design, API RP-2A-WSD, 21st edition", ~ (2007)
- Schmidt H, Neuper M., "Zum elastostatischene Tragverhalten exzentrisch vorgespannter L-Stöße mit vorgespannten Schrauben", Stahlbau, 66, pp.163~168 (1997)
- "VDI-Handbuch Konstruktion" (2003), Beuth Verlag GmbH
- Jung D., "The Study for the Behavior Characteristic with the L-type Flange Bolt Connection of the Offshore Wind Turbine Sub-structure", J. Comput. Struct. Eng. Inst. Korea, 34(5), pp.279~286 (2021)
- "KS B 1010, High-tensile bolt for friction welding, hexagonal nut and flat washer set", 22~ (2009)