Factor Resistance Comparison of a Long Shaft in 955 and 1055 John Deere Grain Combine

Authors: M. Azadbakht, M. E. Shayan, H. Jafari, E. Ghajarjazi, A. Kiapei

Abstract:

Transmission shafts are affected by various forces, for example, during acceleration or sudden breaks, bending during transportation, vertical forces that lead to cuts. One of the main failures in combines is breaking shaft which repairmen refer it. Structural resistance of canal against torque is very important in the beginning of the movement. For analyzing stress, a typical sample from a type of combine was selected, called JD955 combine. Long shaft in this combine was analyzed with finite element method by Ansys13 generic package under static load. Conducted analysis showed that there is a maximum stress in contact surfaces of indentations and also in place of changing diameter. Safety factor value is low in parts of the shaft and this increases the probability of failure at these points. To improve the conditions with the least cost and an approach of product improvement, using alternative alloy is important.

Keywords: John Deere, Ansys, Shaft, Stress, Grain Combine harvester, Finite element, Failure.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1100909

References:

[1] Risitano, An. 2011. Mechanical Design. CRC Press: page 249.
[2] Beckert, B.A., 1996. Venturing into Virtual Product Development, Computer-Aided engineering, Pp: 45–50.
[3] Lee, K., 1999. Principles of CAD/CAM/CAE Ststems. Addison-Wesley, Inc.
[4] Ayyazi, M., 2004. Designing and Fabricating of Platform for JD1165 Combine. Master of Science Thesis, Tehran University.
[5] Osman Asi, Fatigue failure of a rear axle shaft of an automobile Engineering Failure Analysis 13 (2006) 1293–1302.
[6] Mahanty, K.D., V. Manohar, B.S. Khomane and S. Nayak, 2001. Analysis and Weight Reduction of a Tractor’s Front Axle. Tata Consultancy Services, India, Swarup Udgata, International Auto Limited, India.
[7] Maly, J. and E. Bazzaz, 2003. Design Change from Casting to Welding for an Axle Casing. http://WWW.aveng.com/Paper_ MSC_03.pdf
[8] Hancq, D.A., 2003. Fatigue Analysis Using ANSYS. ANSYS Inc., 22 P. http://www.ansys.com/
[9] Rabb, R., 1996. Fatigue failure of a connecting rod. J. Eng. Failure Anal., 3: 13-28.
[10] Shigley, J. E. and Mischke, C. R. 1989. Mechanical Engineering Design. 5th edn. McGraw-Hill Book Company.
[11] Azadbakht, M. and el. 2013. Investigation of Long Shaft Failure in John Deere 955 Grain Combine Harvester under Static Load. Universal Journal of Agricultural Research 1(3):70-73.
[12] A Practical Approach to Motor Vehicle Engineering and Maintenance, Second Edition, Derek Newbold, Allan Bonnick, 2005, Page 167.
[13] Saatchi, A. and Edris, H. Steel Key. Arkan Danesh Publication. pp 22. 2010.
[14] Behroozi Lar, M., Jafari, A., Mobli, H. and Shahid Zadeh M. Grain combine harvester. Banke keshavarzi Publication. 2007.
[15] Ranjbar, I., Gausem zadeh, H. R. and Davoodi, Sh. Engine and tractor power. Tabriz University Publication. 1997.
[16] Zarepoor, Gh. R. Design of machine elements. Danesh negar Publication. 31-32p. 2001.