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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Jasinskas, Algirdas;Plieskis, Kęstutis;Šarauskis, Egidijus;Sakalauskas, Antanas
Title: Grass silage thickening technology using centrifugal undirected action vibrator
Is part of: Journal of vibroengineering. Vilnius : Vibromechanika, 2010, Vol. 12, iss. 4
Extent: p. 621-628
Date: 2010
Keywords: Silage;Thickening;Container;Undirected action vibrator;Density;Pressure
Abstract: A vibratory device to thicken silage was designed and tested, experimental research was carried out using the device for thickening chopped mass of red clover and maize. Dependences of grass mass density variation on duration of thickening by the device and dependences of relative grass pressure on vibration frequency have been examined and assessed. The research has showed that during vibratory thickening grass layer thickens intensively for 5-10 min and this vibrator is advisable for thickening grass layers of 0.5-0.6 m thickness. After investigation of dependence of grass thickening and grass comparative pressure on vibration frequency it was established that most effectively vibrator works at 43.96 s(-1) frequency. Consequently, it is reasonable to thicken grass using undirected action vibrator at the mentioned frequency or close to it. Experimental research has established that red clover density of 350 kg/m(3) can be achieved by centrifugal-undirected action vibrator. That is insufficient density for grass silage. This vibrator is much more efficient for maize thickening when nearly double mass density is achieved. Therefore, this type of vibrator is advisable for thickening of big stems plants such as maize and its mixture with red clover. It was established, that thickening of maize - Caucasian goat's rue (Galega orientalis Lam.) mix (2:1 ratio) by undirected action vibrator after - 20 min of thickening (2x60 kg) gave 425 kg/m(3) and 124 kg/m(3) of dry matter density respectively. It is not sufficient density for grass thickening. Such vibrator is much more efficient in thickening maize, it reaches bigger mass density - 730 kg/m(3) and 223 kg/m(3) of dry matter. On the grounds of the research results it can be stated that the vibratory thickener of investigated design (undirected action vibrator) is reasonable to use in thickening maize and maize-red clover mixture
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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