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Theoretical Analysis of Bending Stresses to Design a Sprocket for Transportation Part of a Chinese Cabbage Collector

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Abstract

Purpose

Force calculation, stress, and fatigue analysis are major issues in machine design to ensure the life expectancy of sprocket-gear power transmission systems. Therefore, this study aims to conduct a theoretical analysis of bending stresses to select the size and component materials for the power transmission part of a Chinese cabbage collector that is under development.

Methods

The three-dimensional models of a 14T sprocket gear for two steel materials, SCr420H and SM45C, were generated, employing commercial software. The bending stresses, deformations, and fatigue damages of the designed sprocket were determined by varying the face width and pressure angle of the sprocket teeth. The Lewis and American Gear Manufacturer Association (AGMA) equations were used to calculate the bending stresses. The calculated bending-stress values were compared with the stress values obtained from finite-element analysis (FEA).

Results

The maximum stress values on the gear teeth were 650.07, 826.23, and 840.77 MPa for a 20° pressure angle by using the Lewis, AGMA, and FEA methods, respectively. The simulated maximum stress value was higher than the yield strength of the SM45C steel and lower than the yield strength of the SCr420H steel. In addition, the maximum face width showed the minimum bending stress and fatigue damage for the selected material. Hence, considering the safety factor, the steel material SCr420H was selected with a 4.5-mm face width for designing the power transmission part of the Chinese cabbage collector.

Conclusion

The analysis of bending stresses presented in this research can guide the design of a sprocket for the efficient transfer of Chinese cabbages using the proposed Chinese cabbage collector.

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Acknowledgments

This work was conducted with the support of the “Cooperative Research Program for Agriculture Science and Technology Development” (Project No. PJ0128532020), Rural Development Administration, Republic of Korea.

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Authors and Affiliations

  1. National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54875, Republic of Korea

    Ye-Seul Lee & Tae-Kyung Kang

  2. Department of Agricultural Machinery Engineering, Chungnam National University, Daejeon, 34134, Republic of Korea

    Mohammod Ali, Md Nafiul Islam, Kamal Rasool, Bo-Eun Jang & Sun-Ok Chung

  3. Department of Smart Agriculture Systems, Chungnam National University, Daejeon, 34134, Republic of Korea

    Mohammod Ali, Md Nafiul Islam, Kamal Rasool, Bo-Eun Jang & Sun-Ok Chung

  4. Department of Agricultural and Industrial Engineering, Hajee Mohammad Danesh Science and Technology University, Dinajpur, 5200, Bangladesh

    Md Shaha Nur Kabir

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  1. Ye-Seul Lee
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Correspondence to Sun-Ok Chung.

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Lee, YS., Ali, M., Islam, M.N. et al. Theoretical Analysis of Bending Stresses to Design a Sprocket for Transportation Part of a Chinese Cabbage Collector. J. Biosyst. Eng. 45, 85–93 (2020). https://doi.org/10.1007/s42853-020-00047-w

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  • DOI: https://doi.org/10.1007/s42853-020-00047-w

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