Numerical simulation of Rayleigh wave interaction with surface closed cracks under external pressure

Wave Motion ◽  
2015 ◽  
Vol 57 ◽  
pp. 143-153 ◽  
Author(s):  
Maodan Yuan ◽  
Jianhai Zhang ◽  
Sung-Jin Song ◽  
Hak-Joon Kim
Keyword(s):  
Numerical Simulation ◽  
Rayleigh Wave ◽  
Wave Interaction ◽  
External Pressure

Electron-Rayleigh-Wave Interaction

1969 ◽  
Vol 187 (3) ◽  
pp. 804-808 ◽  
Author(s):  
Richard E. Prange
Keyword(s):  
Rayleigh Wave ◽  
Wave Interaction

On the response and prediction of multi-layered flexible riser under combined load conditions

2019 ◽  
Vol 36 (8) ◽  
pp. 2507-2529 ◽  
Author(s):  
Mengsha Liu ◽  
J.Y. Li ◽  
Lixin Chen ◽  
J.S. Ju
Keyword(s):  
Numerical Simulation ◽  
Internal Pressure ◽  
Internal Force ◽  
External Pressure ◽  
Prediction Methods ◽  
Flexible Riser ◽  
Content Type ◽  
Combined Load ◽  
Simulation Results ◽  
Load Conditions

Purpose The internal force is more complicated in a combined load case than in a single load case, and the influence of the combined load on the stress cannot be neglected. The purpose of this paper is to study the mechanical behavior of the flexible riser under combined load conditions of tension and internal pressure or external pressure. Design/methodology/approach The mechanical behavior of the flexible riser under combined load conditions is studied by numerical simulation with a nine-layer detailed finite element model. The layers of flexible riser are modeled separately, and the interactions between layers have been taken into consideration in numerical simulation. Findings Under tension and internal pressure or external pressure, the pressure armor will bear extra external pressure because of the squeezing actions between layers caused by tension, and the extra external pressure will increase proportionately with the increase of the tension. Under internal pressure and tension, the internal stress for tension armor was nearly unchanged compared to that under unique tension load, whereas under external pressure and tension, the change of internal stress for tension armor was significant. Prediction methods of internal force for pressure armor and tension armor under pressure and tension are given, and the result from the formula agrees well with the simulation results. Originality/value The prediction methods on the internal force of flexible riser proposed in this study are proven accurate, with numerical simulation results, and the prediction methods are convenient for engineering applications.

Some characteristics of Rayleigh wave interaction with surface flaws

Ultrasonics ◽  
1971 ◽  
Vol 9 (2) ◽  
pp. 124 ◽  
Author(s):  
H.W. Reinhardt ◽  
J.W. Dally
Keyword(s):  
Rayleigh Wave ◽  
Wave Interaction ◽  
Surface Flaws

Rayleigh wave interaction with, and the extension of, microcracks

1980 ◽  
Vol 15 (2) ◽  
pp. 387-404 ◽  
Author(s):  
M. V. Swain ◽  
J. T. Hagan
Keyword(s):  
Rayleigh Wave ◽  
Wave Interaction
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