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ENG> Vol.6 No.3, March 2014
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Application of Finite Elements Method for Structural Analysis in a Coffee Harvester

Abstract Full-Text HTML Download Download as PDF (Size:1569KB) PP. 138-147
DOI: 10.4236/eng.2014.63017    5,263 Downloads   8,076 Views   Citations
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Evandro Pereira da Silva, Fábio Moreira da Silva, Ricardo Rodrigues Magalhães

Affiliation(s)

Department of Engineering, University of Lavras, Lavras, Brazil.

ABSTRACT

Stress concentration and large displacements are usual problems in the components of the structure of agricultural machinery such harvesters coffee, and that finite element method (FEM) can be a tool to minimize its effects. The goal of this paper is to get results of stresses and displacements of a coffee harvester structure by using FEM for static simulation. The main parts of the coffee harvester analyzed were: engine frame, body right and left sides, front and rear end, main beam, coffee reservoir, wheels and fuel tank. Two different design concepts of a coffee harvester machine were analyzed (structure with rear wheels aligned and misaligned) and the results were compared. It was observed that the model with rear wheels misaligned showed maximum displacement lower than the model with rear wheels aligned. Although higher stress was found in the rear wheels misaligned, it was observed that average stresses for the misaligned wheels design were lower in most structural components analyzed. Based on FEM results, the coffee harvester machine with misaligned rear wheels was built and subjected to operational tests without showing any structural failure.

KEYWORDS

Finite Elements Method; Stress Concentration; Static Simulation; Coffee Harvester

Cite this paper

Silva, E. , Silva, F. and Magalhães, R. (2014) Application of Finite Elements Method for Structural Analysis in a Coffee Harvester. Engineering, 6, 138-147. doi: 10.4236/eng.2014.63017.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Thiyagarajan, R., Kathirvel, K. and Jayashree, G.C. (2013) Ergonomic Intervention in Sugarcane Harvesting Knives. African Journal of Agricultural Research, 8, 574-581.
[2] Huang, T., Kong, C.W., Guo, H.L., Baldwin, A. and Li, H. (2007) A Virtual Prototyping System for Simulating Construction Processes. Automation in Construction, 16, 576-585.
http://dx.doi.org/10.1016/j.autcon.2006.09.007
[3] Han, J.N., Cho, N.J., Chae, S.W. and Choi, Y. (2010) Stress Analysis of Ventilated Brake Discs Using the Finite Element Method. International Journal of Automotive Technology, 11, 133-138.
http://dx.doi.org/10.1007/s12239-010-0018-0
[4] He, B., Wang, S. and Gao, F. (2010) Failure Analysis of an Automobile Damper Spring Tower. Engineering Failure Analysis, 17, 498-505. http://dx.doi.org/10.1016/j.engfailanal.2009.09.010
[5] Petracconi, C.L., Ferreira, S.E. and Palma, E.S. (2010) Fatigue Life Simulation of a Rear Tow Hook Assembly of a Passenger Car. Engineering Failure Analysis, 17, 455-463.
http://dx.doi.org/10.1016/j.engfailanal.2009.09.002
[6] Wang, X. and Zhang, X. (2010) Simulation of Dynamic Cornering Fatigue Test of a Steel Passenger Car Wheel. International Journal of Fatigue, 32, 434-442.
http://dx.doi.org/10.1016/j.ijfatigue.2009.09.006
[7] Magalhaes, R.R., Fontes, C.H. and Melo, S.A.B.V. (2012) Failure Analysis and Design of a Front Bumper using Finite Element Method along with Durability and Rig Tests. International Journal of Vehicle Design, 60, 71-83.
http://dx.doi.org/10.1504/IJVD.2012.049158
[8] Tang, C.Y., Chan, W. and Tsui, C.P. (2010) Finite Element Analysis of Contact Pressures between Seat Cushion and Human Buttock-Thigh Tissue. Engineering, 2, 720-726.
http://dx.doi.org/10.4236/eng.2010.29093
[9] Zienkiewicz, O.C. (1970) The Finite Element Method: From Intuition to Generality. Applied Mechanics Reviews, 23, 249-256.
[10] Knight, C.E. (1993) The Finite Element Method in Mechanical Design. Pws-Kent, Boston.
[11] Magalhaes, A.C., Teixeira, M.M., Couto, S.M. and Resende, R.C. (2006) Modeling of Pneumatic Machine Collector of Coffee Fruits on Yard Using Finite Elements Analysis. Engenharia Agricola, 26, 483-492.
[12] Celik, H.K., Rennie, A.E.W. and Akinci, I. (2011) Deformation Behaviour Simulation of on Apple under Drop Case by Finite Element Method. Journal of Food Engineering, 104, 293-298.
http://dx.doi.org/10.1016/j.jfoodeng.2010.12.020
[13] Nilnonta, W., Thepaa, S., Janjaib, S. and Kasayapananda, N. (2012) Finite Element Simulation for Coffee (Coffea Arabica) Drying. Food and Bioproducts Processing, 90, 341-350.
[14] Li, Z., Li, P., Yang, H. and Liu, J. (2013) Internal Mechanical Damage Prediction in Tomato Compression Using Multiscale Finite Element. Journal of Food Engineering, 116, 639-647.
http://dx.doi.org/10.1016/j.jfoodeng.2013.01.016
[15] Ferraz, G., Silva, F.M., Alves, M.C., Bueno, R.L. and Costa, P. (2012) Geostatistical Analysis of Fruit Yield and Detachment Force in Coffee. Precision Agriculture, 13, 76-89.
http://dx.doi.org/10.1007/s11119-011-9223-8

  
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