Field model experiments and numerical analysis of rainfall-induced shallow loess landslides

This paper deals with the experimental, analytical and numerical analysis of voltage distribution along the cap-and-pin insulators. Five different insulators strings are analyzed, consisting of two, three, four, five and six cap-and-pin U40BL glass disc insulators. Experimental measurements are performed in the high voltage laboratory at the Faculty of Electrical Engineering East Sarajevo. Measurement of the voltage distribution along the disc insulators is performed by using measuring sphere gap. Analytical calculations are performed by using mathematical model which considers parasite self-capacitances of disc insulators, as well as their parasite capacitances to the earth and to the phase conductor. Calculations of the parasite capacitances values are performed and optimum values which lead to the minimum difference between measured and calculated results are suggested. Numerical analyses of the non-linear voltage distribution are performed by using electrostatic field model in software Comsol Multyphisics. 2D axisymmetric models of the cap-and-pin insulators are developed. Despite the measuring configuration is not suitable for numerical analysis, relatively good agreement between the measured results and results calculated by using specialized software are achieved.

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The Numerical Analysis of a Phase Field Model in Moving Boundary Problems

SIAM Journal on Numerical Analysis ◽

10.1137/0725058 ◽

1988 ◽

Vol 25 (5) ◽

pp. 1015-1031 ◽

Cited By ~ 15

Author(s):

J. T. Lin

Keyword(s):

Numerical Analysis ◽

Phase Field ◽

Moving Boundary ◽

Field Model ◽

Phase Field Model ◽

Moving Boundary Problems ◽

Boundary Problems

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Response of Soil and a Submerged Tunnel During a Thrust Fault Offset Based on Model Experiment and Numerical Analysis

Volume 8: Seismic Engineering ◽

10.1115/pvp2005-71179 ◽

2005 ◽

Cited By ~ 2

Author(s):

M. L. Lin ◽

F. S. Jeng ◽

H. J. Wang ◽

C. P. Wang ◽

C. F. Chung ◽

...

Keyword(s):

Numerical Analysis ◽

Surface Soil ◽

Underground Structure ◽

Thrust Fault ◽

Underground Structures ◽

Diversion Tunnel ◽

Near Surface ◽

Model Experiments ◽

Numerical Stimulation ◽

Set Up

Observed from the earthquake disasters occurred over the decades in Taiwan, the deformation of near surface soil was the major cause lead to damages of underground structures or pipe lines; for instance, the damage of diversion tunnel of Shih-Kang Dam in Chichi earthquake is a typical case. To study the process of fault propagation as well as the associated soil and structure deformation during a fault offset event, model experiments of simulating thrust fault offset were set up, in which non-cohesive sands was adopted simulating near surface soil. The results, obtained from experiment studies and numerical analyses based on finite element method were then compared to further explore the behavior of soil, structure during faulting process. The soil deformation obtained from numerical analysis complies with the outcome from model experiments. In the near future, when conducting a risk evaluation for earthquake-induced damage on underground structure, a numerical stimulation can provides helpful quantity analysis and can serve as a handy tool for the earthquake resistance design.

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