Analysis of tunnel advance in soft ground using finite element method a case study on Bolu tunnels

Download
093225.pdf
2000
Çakan, Ahmet Gökmen
Show full item record
185
views
0
downloads
https://hdl.handle.net/11511/2866
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

Analysis of Local Thermal Equilibrium Assumption in Transient Forced Convection in a Graphite Foam Channel
Gürüf, Gürşah; Solmaz, İsmail; Bayer, Özgür (2020-12-01)
In this study, the validity of Local Thermal Equilibrium (LTE) assumption in the transient forced convection of a rectangular channel filled with a block of graphite foam is examined numerically. The governing macroscopic energy conservation equations for solid and gas phases are derived by taking the average of the microscopic one over the averaging volume. Initially, LTE is in existence between the phases and then, the fluid temperature at the channel inlet is suddenly raised. Besides, an appropriate insu...
Analysis of sinusoidal and helical buckling of drill string in horizontal wells using finite element method
Arpacı, Erdoğan; Özbayoğlu, Evren; Department of Petroleum and Natural Gas Engineering (2009)
The number of horizontal wells is increasing rapidly in all over the world with the growth of new technological developments. During horizontal well drilling, much more complex problems occur when compared with vertical well drilling, such as decrease in load transfer to the bit, tubular failure, tubular fatigue and tubular lock-up. This makes selection of appropriate tubular and making the right drill string design more important. As the total compression load on the horizontal section increases, the behav...
Analysis of Piston Slap Using an Elastohydrodynamic Piston Lubrication Model
Dursunkaya, Zafer (null; 1999-10-27)
Analysis of frictional contacts with heat generation considering temperature dependent properties
BALCI, MEHMET NURULLAH; YILDIRIM, BORA; Dağ, Serkan (2015-10-01)
The problem of thermoelastic contact for the homogenous isotropic half-plane with a sliding rigid flat punch problem is investigated. As the rigid flat punch is assumed to slide over the surface of the material, heat is generated due to the friction between the punch and a surface. This heat causes the change of material thermoelastic properties and this change is taken into account in this work by using temperature dependent material properties. In order to obtain the steady state solution, frictional heat...
Analysis of a Wind Energy Conversion System with Doubly-Fed Induction Generator in healthy and Fault Condition via Simulation
Giaourakis, Dimitrios G.; Safacas, Athanasios N.; Tsotoulidis, Savvas (2011-09-10)
In this paper, a wind energy conversion system that uses the "Cascade technology" especially the structure of Doubly-Fed Induction Generator (DFIG) is presented and analyzed. Moreover, a simulation of this wind energy conversion system under fault conditions in MATLAB/SIMULINK is done and the results are evaluated. Open-circuit faults in one IGBT or in two IGBTs are studied.
Citation Formats
A. G. Çakan, “Analysis of tunnel advance in soft ground using finite element method a case study on Bolu tunnels,” Middle East Technical University, 2000.
METU IIS - Integrated Information Service open@metu.edu.tr