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Integration of Reliability Concept into Soil Tillage Machine Design

Kharmanda, Mohamed Ghias LU and Antypas, Imad (2015) In Vestnik of DSTU : Theoretical and scientific-practical journal 15(2). p.22-31
Abstract
The main interest of designers is not only to determine the amplitudes of tillage forces but also the type of their distributions under different soil mechanical properties with object of achieving reliable designs. Whereas, the deterministic design approach consists in achieving designs without considering the randomness of the design parameters that may lead to non reliable designs. In this work, we establish a statistical study on the randomness of the soil properties in collaboration with Cranfield University. This new study can be considered as a useful database for agricultural equipment design fields. Here, we take into account the uncertainties of soil mechanical properties that have big effects on tillage forces. The tillage... (More)
The main interest of designers is not only to determine the amplitudes of tillage forces but also the type of their distributions under different soil mechanical properties with object of achieving reliable designs. Whereas, the deterministic design approach consists in achieving designs without considering the randomness of the design parameters that may lead to non reliable designs. In this work, we establish a statistical study on the randomness of the soil properties in collaboration with Cranfield University. This new study can be considered as a useful database for agricultural equipment design fields. Here, we take into account the uncertainties of soil mechanical properties that have big effects on tillage forces. The tillage forces are calculated in accordance with analytical model of McKyes and Ali with some modifications to include the effect of both soil-metal adhesion and tool speed. The distributions of soil-tool forces are next established to design soil tillage equipments such as shank chisel plow. The reliability index is then calculated using two deferent methods (Monte Carlo method and Hasofer and Lind approach). The Hasofer and Lind approach provides the structural reliability level with a low computing time relative to the Monte Carlo approach. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
process reliability, surface layer hardening, centrifugal rotary processing
in
Vestnik of DSTU : Theoretical and scientific-practical journal
volume
15
issue
2
pages
22 - 31
publisher
Don State Technical University, Russia
ISSN
1992-5980
language
English
LU publication?
yes
id
8c4c8f20-c155-495d-a96f-9d25fbc809f0 (old id 7510699)
alternative location
http://vestnik.donstu.ru/main_en.html
date added to LUP
2015-08-10 10:25:33
date last changed
2016-04-15 23:38:19
@article{8c4c8f20-c155-495d-a96f-9d25fbc809f0,
  abstract     = {The main interest of designers is not only to determine the amplitudes of tillage forces but also the type of their distributions under different soil mechanical properties with object of achieving reliable designs. Whereas, the deterministic design approach consists in achieving designs without considering the randomness of the design parameters that may lead to non reliable designs. In this work, we establish a statistical study on the randomness of the soil properties in collaboration with Cranfield University. This new study can be considered as a useful database for agricultural equipment design fields. Here, we take into account the uncertainties of soil mechanical properties that have big effects on tillage forces. The tillage forces are calculated in accordance with analytical model of McKyes and Ali with some modifications to include the effect of both soil-metal adhesion and tool speed. The distributions of soil-tool forces are next established to design soil tillage equipments such as shank chisel plow. The reliability index is then calculated using two deferent methods (Monte Carlo method and Hasofer and Lind approach). The Hasofer and Lind approach provides the structural reliability level with a low computing time relative to the Monte Carlo approach.},
  author       = {Kharmanda, Mohamed Ghias and Antypas, Imad},
  issn         = {1992-5980},
  keyword      = {process reliability,surface layer hardening,centrifugal rotary processing},
  language     = {eng},
  number       = {2},
  pages        = {22--31},
  publisher    = {Don State Technical University, Russia},
  series       = {Vestnik of DSTU : Theoretical and scientific-practical journal},
  title        = {Integration of Reliability Concept into Soil Tillage Machine Design},
  volume       = {15},
  year         = {2015},
}