Acomputational elastic fracture analysis of cylindrical and conical structures

Atalay, Gökhan


Stochastic geometry model of rock mass fracture network in tunnels
Azarafza, Mohammad; Akgün, Haluk; Asghari-Kaljahi, Ebrahim (Geological Society of London, 2018-08-01)
Geometric distributions of fractures or discontinuities control the behaviour, and limit the strength and the stability of rock masses where the best stabilization and improvement method for that rock mass could be achieved based on favourable discontinuity geometry. This study introduces an algorithm named 'Stochastic Geometry Model of Fractures Network in Tunnels (SGMFNT)', which was developed with the MA THEMATICA software. The SGMFNT method provides a fractures geometric distribution database to aid dis...
Elastoplastic analysis of nonlinearly hardening variable thickness annular disks under external pressure
Eraslan, Ahmet Nedim; Guven, U (Elsevier BV, 2005-05-01)
Based on von Mises' yield criterion, deformation theory of plasticity and Swift's hardening law, elasto-plastic deformation of variable thickness annular disks subjected to external pressure is studied. A nonlinear shooting method using Newton's iterations with numerically approximated tangent is designed for the solution of the problem. Considering a thickness profile in the form of a general parabolic function, the condition of occurrence of plastic deformation at the inner and outer edges of the annular ...
Stochastic modeling of earthquake occurrences and estimation of seismic hazard: a random field approach
Akkaya, Ayşen; Yücemen, Mehmet Semih (2002-01-01)
A random field model is developed to describe the occurrence of earthquakes in the space-time domain. The general theory of stationary random functions is utilized to assess the seismic hazard associated with linearly extending faults. The spatial and temporal correlation characteristics of the strain energy random field are taken into consideration explicitly and particular emphasis is given to the analysis of the correlation structure based on the concepts of scale of fluctuation and variance function. An...
Elastoplastic deformations of rotating parabolic solid disks using Tresca's yield criterion
Eraslan, Ahmet Nedim (Elsevier BV, 2003-11)
Analytical solutions for the stress distribution in rotating parabolic solid disks are obtained. The analysis is based on Tresca's yield criterion, its associated flow rule and linear strain hardening. It is shown that, the deformation behavior of the convex parabolic disk is similar to that of the uniform thickness disk, but in the case of concave parabolic solid disk, it is different. In the latter, the plastic core consists of three different plastic regions with different mathematical forms of the yield...
Stochastic modeling of earthquake occurrences and estimation of seismic hazard: random field approach
Akkaya (Dener), Ayşen; Yücemen, Mehmet Semih; Department of Statistics (1995)
Citation Formats
G. Atalay, “Acomputational elastic fracture analysis of cylindrical and conical structures,” Middle East Technical University, 2002.