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190274

DETERMINATION OF DYNAMIC COEFFICIENT OF FRICTION FOR SOME MATERIALS FOR FEED PELLET UNDER DIFFERENT VALUES OF PRESSURE AND TEMPERATURE

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Last updated: 26 Dec 2024

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Tags

Processing Engineering of Agricultural Products

Abstract

Knowledge of frictional characteristics of materials is required for equipment design. The force of friction must be overcome before these materials flow. The objective of this study is to determine the dynamic coefficient of friction "μd" for yellow corn grits, wheat bran, soybean meal, cotton seed meal and mixtures of some of these materials used for manufacturing pellet for cattle animals, under different values of pressure and temperature. A device was developed for determining the dynamic coefficient of friction under pressure ranging from 9 kPaup to 109 kPa and temperature ranging from 30 to 150 oC. The value of "μd" was determined at ten levels of pressure "P": 9, 18, 27, 42, 53, 65, 75, 88, 97 and 109 kPa, and six levels of the temperature "T": 30, 50, 75, 100, 125 and 150 oC. The determined values of "μd" ranged from 0.113 to 0.397 for Yellow corn grits, from 0.122 to 0.505 for wheat bran, from 0.105 to 0.410 for cotton seed meal, from 0.105 to 0.347 for soybean meal and from 0.391 to 0.105 for mixtures of these materials. The empirical results obtained from the carried out experiments were used to introduce a group of contour charts, using "Excel program" to predict the value of "μd" for the different tested material as a function of both pressure and temperature. These empirical results were also used to derive six mathematical equations to predict the value of "μd" as a function of both pressure and temperature. Also, one general mathematical equation was derived to predict the value of "μd" as a function of raw material contents (protein, ash and moisture content), material pressure and temperature.

DOI

10.21608/mjae.2008.190274

Keywords

Dynamic coefficient of friction, pressure, Temperature, Yellow corn grits, Wheat bran, soybean meal, cotton seed meal

Authors

First Name

Mohamed M.

Last Name

Ibrahim

MiddleName

-

Affiliation

* Assist. Prof., Ag. Eng. Dept., Faculty of Agriculture, Cairo University, Egypt.

Email

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City

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Orcid

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Volume

25

Article Issue

4

Related Issue

16721

Issue Date

2008-10-01

Receive Date

2021-08-19

Publish Date

2008-10-01

Page Start

1,389

Page End

1,409

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 25_Issue 4_Pages 1389-1409.pdf

PDF . 665.0kB

Link

https://mjae.journals.ekb.eg/article_190274.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=190274

Order

69

Type

Original Article

Type Code

1,326

Publication Type

Journal

Publication Title

Misr Journal of Agricultural Engineering

Publication Link

https://mjae.journals.ekb.eg/

MainTitle

DETERMINATION OF DYNAMIC COEFFICIENT OF FRICTION FOR SOME MATERIALS FOR FEED PELLET UNDER DIFFERENT VALUES OF PRESSURE AND TEMPERATURE

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Article

Created At

23 Jan 2023