Specific cutting energy variations under different rice stem cultivars and blade parameters

Cutting energy requirement for rice stem is a momentous touchstone in design or optimization of cutting mechanism on harvesting machines. Various parameters such as physical and mechanical properties of a plant stem and blade shearing components are effective on the cutting energy requirement. Speci...

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Autores principales:	Allameh,Alireza, Reza Alizadeh,Mohammad
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2016
Materias:	specific cutting energy rice stem cutting angle bevel angle
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292016000500004
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spelling	oai:scielo:S0718-342920160005000042017-03-23Specific cutting energy variations under different rice stem cultivars and blade parametersAllameh,AlirezaReza Alizadeh,Mohammad specific cutting energy rice stem cutting angle bevel angle Cutting energy requirement for rice stem is a momentous touchstone in design or optimization of cutting mechanism on harvesting machines. Various parameters such as physical and mechanical properties of a plant stem and blade shearing components are effective on the cutting energy requirement. Specifying these parameters and their impacts on the cutting energy would be especially important in the assessment of each cutting mechanism efficiency and total energy utilization. In this study, using a test-rig pendulum displacement cutting apparatus, specific cutting energy for single stem cutting of rice stem was identified. The experiments were analyzed in a factorial arrangement laid out in a completely randomized design (CRD) with three replications in order to examine the effects of rice cultivars (at four levels: Hashemi, Ali Kazemi, Fajr, and Khazar), cutting angle (at three levels: 25, 30, and 35 degrees), blade bevel angle (at four levels: 25, 30, 35, and 40 degrees), and blade speed (at three levels: 1.5, 2.0, and 2.5 m s-1) on the specific cutting energy for rice stem. The results revealed that rice cultivar and blade velocity had significant effects (P<0.01) on the specific cutting energy. There were significant differences among cultivars in the view of specific cutting energy so that the highest and lowest values belonged to Hashemi (29.29 kJ m-2) and Khazar (16.81 kJ m-2), respectively. When blade velocity increased from 1.5 m s-1 to 2.5 m s-1, specific cutting energy raised about 77 %. Blade cutting and bevel angles were not solely influential on the specific cutting energy but they interacted with rice cultivar and impacted it. Optimum specific cutting energy obtained at cutting and blade bevel angles of 30 and 30 degrees, respectively.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.34 n.5 20162016-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292016000500004en10.4067/S0718-34292016005000024
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	specific cutting energy rice stem cutting angle bevel angle
spellingShingle	specific cutting energy rice stem cutting angle bevel angle Allameh,Alireza Reza Alizadeh,Mohammad Specific cutting energy variations under different rice stem cultivars and blade parameters
description	Cutting energy requirement for rice stem is a momentous touchstone in design or optimization of cutting mechanism on harvesting machines. Various parameters such as physical and mechanical properties of a plant stem and blade shearing components are effective on the cutting energy requirement. Specifying these parameters and their impacts on the cutting energy would be especially important in the assessment of each cutting mechanism efficiency and total energy utilization. In this study, using a test-rig pendulum displacement cutting apparatus, specific cutting energy for single stem cutting of rice stem was identified. The experiments were analyzed in a factorial arrangement laid out in a completely randomized design (CRD) with three replications in order to examine the effects of rice cultivars (at four levels: Hashemi, Ali Kazemi, Fajr, and Khazar), cutting angle (at three levels: 25, 30, and 35 degrees), blade bevel angle (at four levels: 25, 30, 35, and 40 degrees), and blade speed (at three levels: 1.5, 2.0, and 2.5 m s-1) on the specific cutting energy for rice stem. The results revealed that rice cultivar and blade velocity had significant effects (P<0.01) on the specific cutting energy. There were significant differences among cultivars in the view of specific cutting energy so that the highest and lowest values belonged to Hashemi (29.29 kJ m-2) and Khazar (16.81 kJ m-2), respectively. When blade velocity increased from 1.5 m s-1 to 2.5 m s-1, specific cutting energy raised about 77 %. Blade cutting and bevel angles were not solely influential on the specific cutting energy but they interacted with rice cultivar and impacted it. Optimum specific cutting energy obtained at cutting and blade bevel angles of 30 and 30 degrees, respectively.
author	Allameh,Alireza Reza Alizadeh,Mohammad
author_facet	Allameh,Alireza Reza Alizadeh,Mohammad
author_sort	Allameh,Alireza
title	Specific cutting energy variations under different rice stem cultivars and blade parameters
title_short	Specific cutting energy variations under different rice stem cultivars and blade parameters
title_full	Specific cutting energy variations under different rice stem cultivars and blade parameters
title_fullStr	Specific cutting energy variations under different rice stem cultivars and blade parameters
title_full_unstemmed	Specific cutting energy variations under different rice stem cultivars and blade parameters
title_sort	specific cutting energy variations under different rice stem cultivars and blade parameters
publisher	Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292016000500004
work_keys_str_mv	AT allamehalireza specificcuttingenergyvariationsunderdifferentricestemcultivarsandbladeparameters AT rezaalizadehmohammad specificcuttingenergyvariationsunderdifferentricestemcultivarsandbladeparameters
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Specific cutting energy variations under different rice stem cultivars and blade parameters

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