Finite element modeling and measurement of stress evolution in quenching processes

Gür, Cemil Hakan


Finite element modeling of micro particle separation using ultrasonic standing waves
Süleyman, Büyükkoçak; Çetin, Barbaros; Özer, Mehmet Bülent (2014-08-07)
Acoustophoresis which means separation of particles and cells using acoustic waves is becoming an intensive research subject. The method is based on inducing an ultrasonic compression standing wave inside a microchannel. A finite element approach is used to model the acoustic and electro-mechanical behavior of the piezoelectric material, the micro-channel geometry as well as the fluid inside the channel. The choices of silicon and PDMS materials are investigated as the chip materials for the resonator. A se...
Finite element analysis of shearing processes
Isbir, S.; Darendeliler, Haluk; Gökler, Mustafa İlhan (null; 2006-12-01)
Shearing of sheet metal is extensively used in manufacturing industry. It is a highly non-linear process and involves complex mechanisms such as crack initiation and propagation, and deliberate fracture of the material for obtaining the desired geometry. Finite element method can be used for the design of shearing process. However, most of the general purpose commercial finite element analysis programs do not provide ready-to-use facilities to simulate shearing. In this paper, finite element simulation of s...
Finite element modelling and simulation of drying isotropic and anisotropic food samples
Soydan Karabacak, Meltem; Çekmecelioğlu, Deniz; Esin, Ali; Department of Food Engineering (2013)
The aim of this study was to investigate drying characteristics (temperature gradient, rate of drying and temperature change, drying time, diffusivity values, shrinkage) of isotropic and anisotropic foods by observing the changes in temperatures at four different locations and moisture contents and to build an appropriate model for simulation of temperature and moisture distribution using finite element method. The lean meat samples (anisotropic) with three fiber configurations (v; flow normal to fiber, dry...
Finite element analysis and experimental study of dovetail attachments
Akay, Ahmet Arda; Gürses, Ercan; Department of Aerospace Engineering (2016)
Dovetail-rim attachment is a critical component of an aeroengine compressor disc. Fretting fatigue is commonly seen in these attachments, which results to premature failures such as cracking or wear. Main cause of the fretting fatigue is high stress gradients occuring near the edges of contact. Since the problem involves contact, the effect of the certain contact parameters on the stress gradients is investigated. These contact stresses are non-singular and can converge to a value with successive mesh refin...
Optimum design of plates under dynamic conditions
Kılıç, Orkun; Oral, Süha; Department of Mechanical Engineering (2003)
Citation Formats
C. H. Gür, “Finite element modeling and measurement of stress evolution in quenching processes ,” Ph.D. - Doctoral Program, Middle East Technical University, 1995.