Stress distributions in cooling fins of variable thickness with and without rotation

A computational model is developed to predict elastic and elastic-plastic stress distribution in a nonlinearly hardening cooling fin of variable thickness subject to centrifugal force. The model is based on a realistic conduction-convection mechanism, von Mises yield criterion, Henky's deformation theory and a Swift-type strain hardening law. Temperature dependency of modulus of elasticity, uniaxial yield limit, coefficient of thermal expansion, and thermal conductivity of the fin material is taken into account.


Circumferentially cracked bimaterial hollow cylinder under mechanical and transient thermal loading
Kadıoğlu, Fevzi Suat (Informa UK Limited, 2006-12-01)
The analytical solution for the problem of a circumferential inner surface crack in an elastic, infinitely long composite hollow cylinder, made of two concentric perfectly bonded transversely isotropic cylinders is considered. Uniform axial loading and thermal loading in the form of a sudden cooling on the inner boundary are considered. Out of 10 material parameters involved, two bimaterial parameters and three material parameters for each layer upon which the stress intensity factor depends under uniform l...
Surface-to-bed heat transfer for high-density particles in conical spouted and spout-fluid beds
Yaman, Onur; Külah, Görkem; KÖKSAL, MURAT (Elsevier BV, 2019-02-01)
Bed-to-surface heat transfer experiments from a vertically submerged cylindrical surface were conducted in laboratory-scale (D-c = 25 cm) conical spouted and spout-fluid beds at two different conical angles (31 degrees and 66 degrees) in the high particle density range (2500 kg/m(3) <= sigma(p) <= 6000 kg/m(3)). The effects of the bed design parameters (conical angle and inlet diameter of spouting gas entrance) and operating conditions (static bed height, particle size, density, and spouting and fluidizatio...
Reflectance spectra and refractive index of a Nd : YAG laser-oxidized Si surface
Aygun, G; Atanassova, E; Turan, Raşit; Babeva, T (Elsevier BV, 2005-02-15)
The reflectance spectra and refractive index of Nd:YAG laser-oxidized SiO2 layers with thicknesses from 15 to 75 nm have been investigated with respect to the laser beam energy density and substrate temperature. Thickness and refractive index of films have been determined from reflectance measurements at normal light incidence in the spectral range 300-800 nm. It was found that the oxide-growth conditions at higher substrate temperatures and laser powers greater than 3.36 J cm(-2) provides a better film qua...
Structural, electrical and optical properties of Ge implanted GaSe single crystals grown by Bridgman technique
KARAAĞAÇ, HAKAN; Parlak, Mehmet; KARABULUT, ORHAN; SERİNCAN, UĞUR; Turan, Raşit; Akinoglu, B. G. (Wiley, 2006-12-01)
Structural, optical and electrical properties of Ge implanted GaSe single crystal have been studied by means of X-Ray Diffraction (XRD), temperature dependent conductivity and photoconductivity (PC) measurements for different annealing temperatures. It was observed that upon implanting GaSe with Ge and applying annealing process, the resistivity is reduced from 2.1x10(9) to 6.5x10(5) ohm-em. From the temperature dependent conductivities, the activation energies have been found to be 4, 34, and 314 meV for a...
Temperature dependence of magnetic and thermal properties of chiral HyFe and HyMn close to phase transitions by using the Landau mean field model
Tari, Ozlem; Yurtseven, Hasan Hamit (Elsevier BV, 2019-04-15)
Magnetic and thermal properties of chiral metal formate frameworks (MOFs) of NH2NH3M(HCOO)(3), M = Fe, Mn, namely, HyFe and HyMn are investigated close to phase transitions by using Landau phenomenological model. By expanding the free energy in terms of the order parameter, for magnetic properties the temperature dependence of magnetization and inverse magnetic susceptibility, and for thermal properties the heat capacity and entropy are calculated for chiral HyFe and HyMn close to phase transitions using th...
Citation Formats
A. N. Eraslan, “Stress distributions in cooling fins of variable thickness with and without rotation,” JOURNAL OF THERMAL STRESSES, pp. 861–883, 2005, Accessed: 00, 2020. [Online]. Available: