Journal of Korean Society of Industrial and Systems Engineering (산업경영시스템학회지)

Society of Korea Industrial and System Engineering (한국산업경영시스템학회)
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The Evaluation of Structural Safety of Impeller Using FEM Simulation

FEM 시뮬레이션을 이용한 임펠러의 구조 안전성 평가

  • Jung, Jong Yun (School of Industrial Engineering and Naval Architecture, Changwon National University)
  • 정종윤 (창원대학교 산업시스템및조선해양융합공학부)
  • Received : 2020.09.23
  • Accepted : 2020.11.23
  • Published : 2020.12.31
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Abstract

As modern industries are highly being developed, it is required that mechanical parts have to be manufactured with a high precision. In order to have precise parts, error-free designs have to be done before manufacturing with accuracy. For this intention being fulfilled, a mechanical analysis is essential for design proof. Nowadays, FEM simulation is a popular tool for verifying a machine design. In this paper, an impeller, being utilized in a compressor or an oil mixer as an actuator, is studied for an evaluation. The purpose of this study is to present a safety of an impeller for a proof of its mechanical stability. A static analysis for stress, strain, and deformation within a regular usage is examined. This simulation test shows 357.26×106 Pa for maximum equivalent stress and 0.207mm for total deformation. A fatigue test is carried to provide durability and its result shows that minimum safety factor is 3.2889, which guarantees that it runs without a fatigue failure in 106 cycles. The natural frequencies for the impeller is ranged from 228.09Hz to 1,253.6Hz for the 1st to the 6th mode. Total deformations at these natural frequencies are shown from 6.84mm to 12.631mm. Furthermore, Campbell diagram reveals that a critical speed is not found throughout regular rotational speeds. From the test results for the analysis, this paper concludes that the suggested impeller is proved for its mechanical safety and good to utilize at industries.

Keywords

References

  1. Bae, J.H., Jin, C.J., and Bae, S.I., Structural Analysis using Engineering Plastic Impeller, The Proceedings of the 2012 Korean Society of Manufacturing Process Engineers, 2012, p. 72.
  2. Budynas, R.G. and Nisbett, J.K., Mechanical Engineering Design : Mac Graw Hill, 9 th Ed., 2013.
  3. Cho, J.-U. and Han, M.-S., Strength and Fatigue Analysis of Universal Joint, Journal of the Korean Society of Manufacturing Technology Engineers, 2011, Vol. 20, No. 4, pp. 427-433.
  4. Cho, J.-U., Statistical Fracture Analysis of Turbine Blade, Journal of the Korea Academy Industrial Cooperation Society, 2006, Vol. 7, No. 2, pp. 101-106.
  5. Han, M. and Cho, J., Durability Analysis due to the Shape Change of Universal Joint, Journal of the Korean Society of Manufacturing Process Engineers, 2013, Vol. 12, No. 4, pp. 69-74. https://doi.org/10.14775/ksmpe.2013.12.6.069
  6. Hong, D.-K., Ahn, C.-W., Baek, H.-S., Choi, S.-C., and Park, I.-S., Vibration Characteristics of Impeller Shaft for Mixing Machine According to the Position of a Bearing Support, Journal of the Korean Society of Manufacturing Process Engineers, 2009, Vol. 8, No. 3, pp. 68-73.
  7. Jung, J.Y., Park, H.S., and Kim, J.S., Structural Safety of Nozzle Plate using Simulation, Journal of Society of Korea Industrial and Systems Engineering, 2018, Vol. 41, No. 3, pp. 186-193. https://doi.org/10.11627/jkise.2018.41.3.186
  8. Jung, J.Y., Structural Safety of Universal Joint using FEM Simulation, Journal of Society of Korea Industrial and Systems Engineering, 2018, Vol. 41, No. 4, pp. 213-219. https://doi.org/10.11627/jkise.2018.41.4.213
  9. Jung, W., Redesign a Component of Automotive Propeller Shaft to Improve Productivity, Journal of Society of Korea Industrial and Systems Engineering, 2009, Vol. 32, No. 1, pp. 157-163.
  10. Kang, H.S., Oh, J., and Han, J.S., Shape Optimization of Impeller Blades for 15,000HP Centrifugal Compressor Using Fluid Structural Interaction Analysis, Transaction of the Korean Society of Mechanical Engineers B, 2014, Vol. 38, No. 6, pp. 547-556. https://doi.org/10.3795/KSME-B.2014.38.6.547
  11. Kim, B.O., Yang, S.J., and Lee, M.H., Rotordynamic Characteristics Analysis of Turbocharger Turbine for Spin Test, Journal of the Korean Society for Fluid Machinery, 2011, Vol. 14, No. 6, pp. 91-95. https://doi.org/10.5293/kfma..2011.14.6.091
  12. Kim, K.-S. and Lim, T.-Y., Structural Stability Evaluation on the Shape of Impeller for Industrial Agitator, Journal of the Korea Academy Industrial Cooperation Society, 2011, Vol. 12, No. 2, pp. 611-616. https://doi.org/10.5762/KAIS.2011.12.2.611
  13. Kweon, B.S., Lee, C.-W., Shin, Y.I., and Yi, C.-S., A Study on the Vibration Analysis of Impeller and Shaft in Cryogenic Submerged Pump, Journal of the Korean Society of Manufacturing Process Engineers, 2017, Vol. 16, No. 2, pp. 56-62. https://doi.org/10.14775/ksmpe.2017.16.2.056
  14. Lee, J.-M., Kim, Y.-H., Kim, J.-H., Choi, H.-S., and Choi, B.K., Analysis of Dynamic Characteristics of Water Injection Pump through the 2D Finite Element, Transactions of the Korean Society of Noise and Vibration Engineering, 2014, Vol. 24, No. 6, pp. 462-469. https://doi.org/10.5050/KSNVE.2014.24.6.462
  15. Logan, D.L., Finite Element Method : Thomson, 6th Ed., 2017.
  16. Nahm, Y.-E. and Ishikawa, H., A Study on Universal Design Using PSD(Preference Set-Based Design) Method, Journal of Society of Korea Industrial and Systems Engineering, 2015, Vol. 38, No. 3, pp. 127-135. https://doi.org/10.11627/jkise.2015.38.3.127
  17. Park, Y.-H., Choi, H.-J., Kim, C.-S., and Cho, S.-Y., Study of Design Technology of a Turbo-impeller, Journal of the Korean Society of Manufacturing Process Engineers, 2011, Vol. 10, No. 2, pp. 16-25.
  18. Yoo, J., Lim, D., and Lee, S., Assessment of Structural Design for Turbocharger Impeller, Proceedings of the 2007 Korean Society of Mechanical Engineers, Spring-Fall Conference, 2007, pp. 42-47.