Finite Element Fatigue Analysis of Mouldboard Plough Cross Bar Based on the Draft Force of MF 399 Tractor
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TECHNICAL ARTICLE—PEER-REVIEWED
Finite Element Fatigue Analysis of Mouldboard Plough Cross Bar Based on the Draft Force of MF 399 Tractor Ahmad Jahanbakhshi . Saadi Heidari Raz Dareh . Kamran Kheiralipour
Submitted: 3 March 2020 / in revised form: 16 July 2020 Ó ASM International 2020
Abstract Cross bar of mouldboard plough of Massey Ferguson 399 Tractor was investigated by finite element method in point of failure analysis. A 3-d model of the cross bar was provided in ANSYS Software, and the constraints, boundary conditions, and loads were applied on the model. The fatigue analysis was done on the model after static analysis. The exerted loads were calculated based on the maximum draft force of the tractor. Based on Soderberg criteria, the safety factor in fatigue analysis was calculated and that of the left hole of the cross bar was minimum as 1.82 that shows higher failure probability of that. The result of fatigue analysis in the present research is in agreement with that practically is happened for mouldboard plough cross bar. Keywords Cross bar Mouldboard plough Finite element analysis Fatigue analysis MF 399
Introduction Studying the mechanical behaviour of agricultural machinery not only leads to increase the durability and improve quality, but also makes many changes to improve the performance of the involved tools [1]. Mouldboard plough is one of the main tillage equipments due to its A. Jahanbakhshi Department of Biosystems Engineering, University of Mohaghegh Ardabili, Ardabil, Iran S. Heidari Raz Dareh K. Kheiralipour (&) Department of Biosystems Engineering, Ilam University, Ilam, Iran e-mail: [email protected]; [email protected]
application in primary tillage and high energy consumption [2, 3]. The plough is the most widely used tool among other tillage implements in Iran. The high probability of the plough failures is due to complex shape and deep working depth. Hence, mechanical analysis of mouldboard plough in order to redesign and optimization of the implement is necessary in point of costs reduction in production, evaluation, and operation stages [4]. Force, stress, deformation, optimization, and performance are design factors that nowadays can be analysed by computer aided design techniques. These techniques are useful in viewpoint of time, cost, and efficiency [5]. The finite element method (FEM) is a numerical method that can be used to determine the answer of many engineering problems. Stable, transient, linear, and nonlinear issues in the analysis of mechanical stress, heat transfer, fluid flow, and electromagnetic can be investigated using FEM [6]. The FEM was vastly used for analysing the industrial [7–9] and agricultural machinery [10–16] and biosystems [17]. Bayrakceken conducted a study on bevel pinion shaft of bus using finite element method. The researcher reported that the main factor of failure was stress concentration in the shaft [7]. The FEM was used to analyse the strength of some modified gears [8]. Numerical and experimental failure analysis
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