Common reed briquetting modeling with working model programme

Abstract

Nonlinear particle resistance force characteristics were experimentally obtained during compacting depending on the size of the particles. Similar nonlinear characteristics were obtained with MathCad programme using a spring incorporated in a rhomboid mechanism. The similar mechanism was used for modelling nonlinear particle resistance characteristics during the briquetting process with the Working Model programme. A hydraulic pressing mechanism on rhomboid basis with incorporated actuator was created according to the patent LV 14201 B. Working Model 2D programme lets acquire the pressing force and resistance force changing values during compacting simulation. Comparing the results of the experiments and modelling with Working Model programme the maximal difference is 5.1 % for the force values. Difference between the results of modelling with MathCad and Working Model is less than 0.14 % for the force values. The linear actuator force characteristic curve let easy calculate the pressing energy 1.34 ± 0.28 kJ for common reed particles obtained with the hammer mill screen size 1.5 mm. Comparing with the calculated experimentally determined pressing energy 1.46 ± 0.31 kJ the difference is 0.12 kJ (8.2 %).