STRESS ANALYSIS AND TOPOLOGY OPTIMIZATION OF A CHAIN BUCKET ELEVATOR USING ANSYS

Authors

  • Edward Yin University of Mines and Technology, Faculty of Engineering, Department of Mechanical Engineering, P.O. Box 237, Tarkwa, Ghana
  • Emmanuel M. Seckley University of Mines and Technology, Faculty of Engineering, Department of Mechanical Engineering, P.O. Box 237, Tarkwa, Ghana
  • Evans Kesse Asiedu University of Mines and Technology, Faculty of Engineering, Department of Mechanical Engineering, P.O. Box 237, Tarkwa, Ghana
  • Stephen Cobbinah University of Mines and Technology, Faculty of Engineering, Department of Mechanical Engineering, P.O. Box 237, Tarkwa, Ghana

DOI:

https://doi.org/10.14311/AP.2021.61.0292

Keywords:

Stress analysis, bucket elevator, conveyor chain links, optimization, finite element method

Abstract

A failure of conveyor chain links in a production process can cause unscheduled shutdowns, which increase the throughput time coupled with damaged buckets and chain links, which increase maintenance and repair costs. Since failures of conveyor chains are inevitable, this research aims to modify the design of the chain bucket elevator by incorporating a ratchet mechanism, which will prevent the chain bucket assembly from dropping to the bottom of the chain bucket elevator whenever there is a chain-link failure and also avoid the jamming of the bucket chain assembly against one another when dropping to the bottom of the elevator during failure. The number of damaged buckets and chains will be minimal, thereby reducing the maintenance and repair costs. Also, the time required for replacing the failed chain link will be reduced, which in turn, will reduce the down-time, thereby increasing the production rate. The ratchet mechanism, which can withstand a maximum load of 38.10 kN, comprises a toothed wheel, a pawl, and a spring. An analytical method was employed for the initial analysis and the results were verified using the FEM. Topology Optimization was carried out on the beam and lever with results showing a 20% and 26% weight reduction from the original, respectively. The stresses induced in the beam and lever increased significantly by 36% and 47 %, respectively, because of the optimization, however, they remained within the acceptable limits.

References

J. S. Quincha Munoz. Engineering Optimization Showcase. bachelor, The University of Queensland, 2017.

H. K. Kulkarni, R. J. Patil. Failure analysis and weight optimization of chain conveyor system. International Journal of Advanced Engineering Research and Studies 4(2):23 – 26, 2015.

E. Yin, O. Muvengei, J. Kihiu, K. Njoroge. Failure analysis on conveyor chain links of a central bucket elevator. IOSR Journal of Mechanical and Civil Engineering 13(4):56 – 63, 2016. doi:10.9790/1684-1304075663.

M. D. Jagtap, B. D. Gaikwad, P. M. Pawar. Study of roller conveyor chain strip under tensile loading. International Journal of Modern Engineering Research 4(5).

K. Robinson. The voice of the north american conveyor industry. In Conveyor Equipment Manufacturers Association Engineering Conference. Florida, USA, 2012.

N. Yashaswini, B. Raju, A. Purushottham. Design and optimization of bucket elevator through finite element analysis. IPASJ International Journal of Mechanical Engineering 2(9):73 – 78, 2014.

O. M. E. Yin, J. M. Kihiu, O. Muvengei. Metallographic failure analysis on bucket elevator conveyor chain links. Journal of Advancements in Material Engineering 4(3):27 – 40, 2019. doi:10.5281/zenodo.3516549.

S. Patel, S. Patel, J. Patel. Productivity improvement of bucket elevator by modified design. International Journal of Emerging Technology and Advanced Engineering 3(1):128 – 133, 2013.

G. A. Taher, Y. Howlader, M. A. Rabbi, F. A. Touqir. Automation of material handling with bucket elevator and belt conveyor. International Journal of Scientific and Research Publications 4(3):1 – 13, 2014.

A. Barshi, K. Singh, O. Patil, S. Yadav. Design, analysis and optimization of bucket elevator. International Journal of Advanced Engineering and Innovative Technology 1(1):85 – 89, 2019.

S. P. Deokar, A. Lagad, S. S. Kelkar. FEA and Optimization of elevator bucket. International Engineering Research Journal pp. 975 – 980, 2015. [12] S. T. Shinde, V. S. Dixit, M. R. Nukulwar, S. S. Pimpale. Material optimization and modal analysis of elevator bucket 6(2):574 – 580, 2016.

J. L. Pérez-Aparicio, R. Bravo, J. J. Gómez-Hernández. Optimal numerical design of bucket elevators using discontinuous deformation analysis. Granular Matter 16(4):485 – 498, 2014. doi:10.1007/s10035-014-0485-5.

H. K. Chavhan, K. C. More, U. U. Patil. Design and analysis of bucket elevator. International Journal of Scientific and Technology Research 9(3):3296 – 3301, 2020.

F. J. C. Rademacher. Non-spill discharge characteristics of bucket elevators. Powder Technology 22(2):215 – 241, 1979. doi:10.1016/0032-5910(79)80029-7.

N. I. B. Haris. Failure Analysis of Conveyor Chain Links: A Case Study at Top Glove Sdn. Bhd. Master’s thesis, Universiti Tun Hussein Onn Malaysia, 2013.

M. Sujata, M. A. Venkataswamy, M. A. Parameswara, S. K. Bhaumik. Failure analysis of conveyor chain links. Engineering Failure Analysis 13(6):914 – 924, 2006. doi:10.1016/j.engfailanal.2005.07.002.

R. Budynas, K. Nisbett. Shigley’s Mechanical Engineering Design. McGraw-Hill, 9th edn., 2011.

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Published

2021-03-01

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