Tribological Study of Chisel Knives in Sandy Soil

Laurențiu Constantin Vlăduțoiu, Georgiana Chişiu (), Andrei Tudor, Nicolae-Valentin Vlăduț, Lucian Fechete Tutunaru, Eugen Marin and Iulia-Andrea Grigore
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Laurențiu Constantin Vlăduțoiu: National Institute for Research, Development of Machines and Installations Designed for Agriculture and Food Industry, INMA Bucharest, 077190 Bucharest, Romania
Georgiana Chişiu: Department of Machine Elements and Tribology, University Politehnica of Bucharest, Splaiul Independenței 313, 060042 Bucharest, Romania
Andrei Tudor: Department of Machine Elements and Tribology, University Politehnica of Bucharest, Splaiul Independenței 313, 060042 Bucharest, Romania
Nicolae-Valentin Vlăduț: National Institute for Research, Development of Machines and Installations Designed for Agriculture and Food Industry, INMA Bucharest, 077190 Bucharest, Romania
Lucian Fechete Tutunaru: Department of Automotive Engineering and Transports, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, Romania
Eugen Marin: National Institute for Research, Development of Machines and Installations Designed for Agriculture and Food Industry, INMA Bucharest, 077190 Bucharest, Romania
Iulia-Andrea Grigore: National Institute for Research, Development of Machines and Installations Designed for Agriculture and Food Industry, INMA Bucharest, 077190 Bucharest, Romania

Agriculture, 2023, vol. 13, issue 6, 1-18

Abstract: This paper presents the interaction system within the mechanical soil processing process, consisting of two large elements, the metal of the tool and the soil. Due to the two main forces acting on the chisel knives—friction and impact with the sandy soil—the wear of these chisel knives was determined. To determine the wear, a stand was used which allowed testing chisel-type knives in laboratory conditions by changing their functional parameters: working depth, angle of the knives to work the soil, working speed, humidity and granulation of the test environment. The present paper presents an application of the Archard-type wear law to the contact between a chisel-type knife and sandy soil (wet and dry sand). The theoretical model regarding the Archard wear coefficient considered three forms of surface damage (shake down, ratcheting and micro-cutting). The sand was considered spherical and rigid and the surface of the knife was flat. The experimental model considered real steel knives with different surface hardness and operation under controlled conditions of sand granulation, humidity, attack angle, depth of penetration and speed of sliding. The theoretical and experimental results highlight the wear behavior of chisel knives (Archard coefficient) in wet and dry sand.

Keywords: soil; abrasion wear; active parts; shakedown; ratcheting; micro-cutting; Archard wear coefficient; sandy soil (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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