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2 results on '"Yilmaz, L"'

1. 546. Influence of vertical vibration of support on the dynamic stability of subsea pipeline.

Author

Mastanzade, N. and Yilmaz, L.

Subjects
*PIPELINES, *OSCILLATIONS, *PENDULUMS, *ELECTRICAL harmonics, *EQUATIONS
Abstract

The underwater suspended pipeline was investigated for the dynamic instability which is applied at the problem for the oscillation of the pipe-line part by inverted pendulum. The connection point of pendulum was received as vertical moving point by harmonic law. For definition of the dynamical equation it is used the analogy of the Mathieu equation. For solution it is used Ince-Strut diagram. As numerical example it was used the pipeline behavior at the project between Turkey and North Cyprus at the East Mediterranean Sea. [ABSTRACT FROM AUTHOR]

Published
2010

2. VORTEX SHEDDINGS ON THE INSTABILITY AT SUBSEA SUSPENDED PIPELINE.

Author

Mestanzade, N. and Yilmaz, L.

Subjects
UNDERWATER pipelines, DYNAMIC stability, VORTEX shedding, VIBRATION (Mechanics), MATHIEU equation
Abstract

The article examines the stability of an underwater suspended pipeline which vibrates during vortex shedding as applied in a pipeline project between Turkey and North Cyprus in the East Mediterranean Sea. The analogy of the Mathieu Equation is used for the definition of the dynamical equation while the Ince-Strutt diagram is used for solution. It is found that during horizontal vortex shedding, the pipeline loose dynamical stability shows unstable characters.

Published
2008

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