The effect of temperature on elastical properties of individual particles

The current work concerns investigating the effect of temperature on elastic properties of particles when employing single particle uniaxial compression tests. These elastic properties, such as: the effective modulus of elasticity are essential for numerical computations using DEM simulations; and knowledge about how these properties affected by temperature can increase the accuracy of numerical calculations. During this study, we made experiments with three different materials and five different temperatures, including low temperatures (-65°,-25°) and high temperatures (100°,150°). The temperature of the particles during the experiments was kept constant using appropriate heating and cooling systems which were especially designed and constructed for this study. Statistical analysis of the results shows that the effective modulus of elasticity decreases with increase in temperature. Which mean that the particles become softer with increasing temperature. Finally, an empirical model was established that describes the distribution of the effective modulus of elasticity and its dependence on the temperature and particle size for salt particles.