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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.1
- 수록면
- 447 - 458 (12page)
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초록· 키워드
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This paper proposes an approximated contact force model to identify the nonlinear behavior of a fuel rod with gap supports;also, the numerical prediction of interfacial forces in the mechanical contact of fuel rods with gap supports is studied. The Newmark integration method requires the current status of the contact force, but the contact force is not given a priori.
Taylor’s expansion can be used to predict the unknown contact force; therefore, it should be guaranteed that the first derivative of the contact force is continuous. This work proposes a continuous and differentiable contact force model with the ability to estimate the current state of the contact force. An approximated convex and differentiable potential function for the contact force is described, and a variational formulation is also provided. A numerical example that considers the particularly stiff supports has been studied, and a fuel rod with hardening supports was also examined for a realistic simulation. An approximated proper solution can be obtained using the results, and abrupt changes from the contacting state to non-contacting state, or vice versa, can be relieved. It can also be seen that not only the external force but also the developed contact force affects the response.
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등록된 정보가 없습니다.
참고문헌 (23)
참고문헌 신청
A. Dimarogonas / 1996 / Vibration for Engineer / Prentice Hall
A.J. Molnar / 1976 / Application of Normal Mode Theory and Pseudoforce Methods to Solve Problems with Nonlinearity / J. Pressure Vessel Tech : 151 ~ 156
C.E. Taylor / 1988 / Experimental Determination of Single and Two-phase Cross Flow-Induced Forces on Tube Rows / J. Pressure Vessel Tech 110 : 22 ~ 28
F. Axisa / 1988 / Overview of Numerical Methods for Predicting Flow-Induced Vibration / J. Pressure Vessel Tech 110 : 6 ~ 14
G. Duvaut / 1976 / Inequalities in Mechanics and Physics / Springer-Velag
A.J. Molnar / 1976 / Application of Normal Mode Theory and Pseudoforce Methods to Solve Problems with Nonlinearity / J. Pressure Vessel Tech : 151 ~ 156
C.E. Taylor / 1988 / Experimental Determination of Single and Two-phase Cross Flow-Induced Forces on Tube Rows / J. Pressure Vessel Tech 110 : 22 ~ 28
F. Axisa / 1988 / Overview of Numerical Methods for Predicting Flow-Induced Vibration / J. Pressure Vessel Tech 110 : 6 ~ 14
G. Duvaut / 1976 / Inequalities in Mechanics and Physics / Springer-Velag
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