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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.10
- 수록면
- 454 - 463 (10page)
- DOI
- 10.5050/KSNVE.2020.30.5.454
이용수
초록· 키워드
오류제보하기
Analyses of natural behaviors of flexible underwater structures are necessary for designing flexible hydrofoils and propellers. The added mass and stiffness of hydrofoils and propellers have an influence on the natural frequencies of underwater structures. In the previous studies, only added mass was considered for the analysis. This resulted in an increase in the error of estimations of natural frequency at high speed conditions. Therefore, to predict the natural frequency variance of underwater structures, the added stiffness must be taken into account. In this paper, the added stiffness of underwater hydrofoils dependent on the flow speed is derived. The added stiffness is obtained from a change of the hydrodynamic force with structural displacement and is calculated for varying flow speeds. Hybrid FSI analyses of hydrofoils are performed by considering the added stiffness in the structural system of the FSI. The natural frequencies of the hydrofoil are compared with the experimental values. The results show that the flow speed–dependent added stiffness is required to accurately predict natural responses of underwater structures in high speed environment.
목차
ABSTRACT
1. 서론
2. 부가탄성 반영 하이브리드 유체-구조연성
3. 부가탄성 반영 수중날개 하이브리드연성 해석과 고유 응답
4. 결론
References
참고문헌 (22)
참고문헌 신청
Lee, Y.-J., Jhan, Y.-T. and Chung, C.-H., 2012, Fluid-structure Interaction of FRP Wind Turbine Blades under Aerodynamic Effect, Composites Part B: Engineering, Vol. 43, No. 5, pp. 2180~2191.
Huang, Z., Xiong, Y. and Xu, Y., 2019, The Simulation of Deformation and Vibration Characteristics of a Flexible Hydrofoil based on Static and Transient FSI, Ocean Engineering, Vol. 182, pp. 61~74.
Oh, S.-W., Park, O. and Kim, D.-H., 2006, Flow-induced Vibration Analysis for Cascades with Stator-rotor Interaction and Viscosity Effect, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 16, No. 10, pp. 1082~1089.
Kim, Y.-S., Kim, D.-H., Kim, Y.-H. and Park, O., 2009, Fluid/Structure Coupled Analysis of 3D Turbine Blade Considering Stator-rotor Interaction, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 19, No. 8, pp. 764~772.
Zhu, J., Cai, X. and Gu, R., 2016, Aerodynamic and Structural Integrated Optimization Design of Horizontal-axiswind Turbine Blades, Energies, Vol. 9, No. 2, pp. 1~18.
Huang, Z., Xiong, Y. and Xu, Y., 2019, The Simulation of Deformation and Vibration Characteristics of a Flexible Hydrofoil based on Static and Transient FSI, Ocean Engineering, Vol. 182, pp. 61~74.
Oh, S.-W., Park, O. and Kim, D.-H., 2006, Flow-induced Vibration Analysis for Cascades with Stator-rotor Interaction and Viscosity Effect, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 16, No. 10, pp. 1082~1089.
Kim, Y.-S., Kim, D.-H., Kim, Y.-H. and Park, O., 2009, Fluid/Structure Coupled Analysis of 3D Turbine Blade Considering Stator-rotor Interaction, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 19, No. 8, pp. 764~772.
Zhu, J., Cai, X. and Gu, R., 2016, Aerodynamic and Structural Integrated Optimization Design of Horizontal-axiswind Turbine Blades, Energies, Vol. 9, No. 2, pp. 1~18.
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UCI(KEPA) : I410-ECN-0101-2020-424-001285863