Digital Library of the European Council for Modelling and Simulation

Title:	Evaluating The Stress Field On Sweep During Tillage Process Applying Coupled Finite-Discrete Element Method
Authors:	Mark Zs. Vajda, Zsofia Olah, Akos Orosz
Published in:	(2019). ECMS 2019 Proceedings Edited by: Mauro Iacono, Francesco Palmieri, Marco Gribaudo, Massimo Ficco, European Council for Modeling and Simulation. DOI: http://doi.org/10.7148/2019 ISSN: 2522-2422 (ONLINE) ISSN: 2522-2414 (PRINT) ISSN: 2522-2430 (CD-ROM) 33rd International ECMS Conference on Modelling and Simulation, Caserta, Italy, June 11^th – June 14^th, 2019
Citation format:	Mark Zs. Vajda, Zsofia Olah, Akos Orosz (2019). Evaluating The Stress Field On Sweep During Tillage Process Applying Coupled Finite-Discrete Element Method, ECMS 2019 Proceedings Edited by: Mauro Iacono, Francesco Palmieri, Marco Gribaudo, Massimo Ficco European Council for Modeling and Simulation. doi: 10.7148/2019-0358
DOI:	https://doi.org/10.7148/2019-0358
Abstract:	Agricultural production is based on proper tillage, where different types of cultivators are often used. The sweep is often applied among the several cultivator designs. The traditional design procedure of these tools is based on producing several prototypes and inspecting them during cost-demanding laboratory and field measurements. However, it is possible to reduce the number of necessary prototypes by utilizing numerical analyses. Static yield and fatigue are possible mechanical failure modes of the sweep. By utilizing a one-way coupled finite-discrete element simulation method, it becomes possible to find the stress concentration areas during the linear motion of the tool in soil, which can cause the failures. The geometry of a sweep was 3D scanned to get an accurate 3D surface model. The reaction forces between the soil and the sweep were calculated by the application of discrete element method (DEM) and the stress field was computed with the use of finite element method (FEM). The stress field was also estimated by assuming a homogenous distributed reaction force. The paper discusses the difference between the results of the two reaction force computing methods and the influence of using the coupled simulation.
Full text: