Plastic yield of particulate materials under the effect of temperature
[ 1 ] Katedra Podstaw Konstrukcji Maszyn, Wydział Maszyn Roboczych i Transportu, Politechnika Poznańska | [ P ] employee
2010
paper
english
EN The parameter of primary importance for modelling the compression of particulate materials, in particular sawdust, is the critical stress which initiates plastic flow of the material. This value depends on the thermo-mechanical parameters of the material and the fundamental parameters of the process, namely compression pressure in the chamber, forming time and temperature. Compression of sawdust involves increase of temperature, which significantly reduces the compressive strength of the material. The focus of this paper is on the distribution of temperature in the superficial layer of briquette. It will enable to allow for the effect of temperature on the yield point, which is the strength criterion and the main element of a mathematical model describing the process of briquetting.
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