Finite Element Modelling of Thermal Stress Restrained Specimen Test

Quadır, Adnan
Güler, Murat
Low temperature cracks are developed when the temperature of pavement falls below zero degrees Celsius or when the variation in daily air temperatures becomes significant in the field. Various experimental techniques have been suggested to simulate low temperature cracking of asphalt concrete in the laboratory, out of which the thermal stress restrained specimen test (TSRST) is one of the well-known test methods. A research was carried out to model the TSRST using the finite element approach and to calculate the maximum stresses and corresponding strains near failure during testing. Test specimens were prepared with two different aggregate sources and gradations. Dynamic complex modulus tests were conducted to determine the relevant material properties necessary for the finite element analysis. A finite element model was then developed in Abaqus® for the specimens tested in TSRST setup to calculate the thermal stresses and strains near failure. The results of analysis showed that the test specimen can be successfully modelled using the finite element method to calculate maximum stress and corresponding strain in TSRST testing. The strains developed become smaller for limestone aggregate mixtures with higher fracture strength values. In terms of the effect of gradation, fine graded mixtures display smaller strains near failure. It is believed that smaller strains calculated indicate brittle behaviour of mixtures under thermal loading.


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 simulation of quench hardening
Gür, Cemil Hakan (1996-07-01)
In this study, an efficient finite element model for predicting the temperature field, volume fraction of phases and the evolution of internal stresses up to the residual stress states during quenching of axisymmetrical steel components is developed and implemented. The temperature distribution is determined by considering heat losses to the quenching medium as well as latent heat due to phase transformations. Phase transformations are modelled by discretizing the cooling cuves in a succession of isothermal...
Finite element modelling, earthquake analysis and structural health monitoring of Ortahisar Castle
Göksu, Osman; Türer, Ahmet; Department of Civil Engineering (2015)
Soil moisture is a critical parameter for many subjects like climate, drought, water and energy balance, weather prediction; yet the number of studies involving soil moisture has been limited in Turkey. Soil moisture parameter can be obtained using several different methods. Among the values obtained via different methods, station-based observations have the greatest potential to provide the most accurate soil moisture information, even though station based observations have the representativeness errors ov...
An Experimental and numerical investigation of warpage behavior of silicon substrates at cryogenic temperatures
Baloğlu, Eyüp Can; Okutucu Özyurt, Hanife Tuba; Dursunkaya, Zafer; Department of Mechanical Engineering (2016)
Surface deformations and thermal stress behavior of microelectronic devices that operate at cryogenic temperatures (less than 120 K) and under vacuum conditions are important phenomena that aff ect the reliability requirements of such components. Excessive deformation and thermal stress on these devices may result in interconnect failure, performance degradation or other direct mechanical failure of one or more components. To obtain reliable products, surface deformations, named as warpage most widely, and ...
Effect of Aggregate Type and Rate of Temperature Change on Fracture Strength of Asphalt Concrete
Quadır, Adnan; Güler, Murat (2012-06-02)
One of the main distress types in asphalt concrete pavements is the low temperature cracking due to large variation of daily temperatures. Even though researchers around the world studied the effect of a number of mix design variables on the fracture strength of asphalt concrete, the rate of temperature change and the aggregate type have not been well elaborated in the previous researches and need further investigations. Several test methods have been suggested to study the low temperature behaviour of asph...
Citation Formats
A. Quadır and M. Güler, “Finite Element Modelling of Thermal Stress Restrained Specimen Test,” presented at the 5th Eurasphalt & Eurobitume Congress, (13 - 15 Haziran 2012), 2012, Accessed: 00, 2021. [Online]. Available: