The influence of grooves for rope on the strength of the cargo lifting drum wall Рart 1. Valuation of stress concentration In the grooves of drum at its tension and bending
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Published:
May 4, 2026
Keywords:
rope drum, rope laying grooves, stress concentration factor, finite elements method, strength
Main Article Content
Abstract
. Grooves on the surface of the rope drum wall contribute to high-quality laying and significantly increase the service life of the rope. On the other hand, the grooves are stress concentrators that negatively effect on the strength of the wall. Due to the complexity of the geometry and the stressed state of the wall, traditional design calculations for the strength of rope drums are simplified, and to ensure their reliability, safety factors are irrationally increased. In particular, the effect of uneven wall thickness on the level of design stresses is not taken into account. We have not found any studies of the influence of grooves on the stress state of the walls of rope drums and similar objects in the scientific and reference literature. In this work, based on numerical modeling using the finite element method, the stress distribution in the groove depression zone of a traditional shape for drums of different diameters was determined. It is shown that the stress concentration in places of wall thickness reduction is quite significant, since the stress concentration coefficient is within 1,30-1,40. This message presents a methodology for determining the level of stress concentration from longitudinal force and bending moment. The results obtained are presented for several standard sizes of rope drums with grooves − the corresponding stress concentration coefficients.
Article Details
How to Cite
Khomiak, Y., Makohon, V., & Zheglova, V. (2026). The influence of grooves for rope on the strength of the cargo lifting drum wall Рart 1. Valuation of stress concentration In the grooves of drum at its tension and bending. Herald of the Odesa National Maritime University, (79), 125-139. https://doi.org/10.47049/2226-1893-2026-1-125-139
Section
Tightening and strength of machine parts
References
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3. Savin H.M., Tulchii V.I. Dovidnyk z kontsentratsii napruzhen. – Kyiv: Vyshcha shkola, 1976. – 412 р. [in Ukrainian].
4. Savruk M., Kazberuk A. Kontsentratsiia napruzhen u tverdykh tilakh z vyrizamy. Mekhanika ruinuvannia ta mitsnist materialiv: Dovidn. posib. / Za zah. red. V.V. Panasiuka. – Lviv: Publishing House «Spolom», 2012. – 384 р. [in Ukrainian].
5. Budynas R.G. Roark's Formulas for Stress and Strain, Ninth Edition. – New York-Lisbon-London-Madrid-Sydney: McGraw-Hill, 2002. – 854 р.
6. Alavi S.K., Ayatollahi M.R., Jamali Ja., Petru M. On the applicability of digital image correlation method in extracting the higher order terms in stress field around blunt notches / Theor. and Appl. Fracture Mech., Vol. 121, 2022. 103436
7. Alavi S.K., Ayatollahi M.R., Daneshfar M., Bahrami B. Experimental stress determination of blunt notches under combinations of modes I and II loading / Engineering Structures, vol. 278, 2023. 115517.
8. Chmelko V., Harakaľ M., Žlábek P., Margetin M., Ďurka R. Simulation of Stress Concentrations in Notches / Metals, 12(1), 2022. 9 p.
9. Cordina R., Ceballos N., Pantierer A., Pantierer S. A Study in Notched Beam Stress Concentration / Engineering: Proceedings of the 17th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Industry, Innovation, And Infrastructure for Sustainable Cities and Communities”. Jamaica, Р. 24-26 July 2019. 7 p.
10. Dondeti S., Miao C., Tippur H.V. A Note On Measuring Mechanical Fields in 3-D Solids Using Digital Gradient Sensing and Refractive Index Matching / Experimental Mechanics, 63, 2023. Р. 263–273.
11. Wei Liu, Longkang Li, Yaxu Qiao Local stress analysis of blunt V-notches using the digital gradient sensing method / J. Appl. Optics, 60, 2021. Р. 1489-1499.
12. Myers T., Sutton M.A., Schreier H., Tofts A., Kattil S.R. Direct Pointwise Comparison of FE Predictions to StereoDIC Measurements: Developments and Validation Using Double Edge-Notched Tensile Specimen / Comput Model Eng Sci, Vol. 140, Iss. 2, 2024. Р. 1263-1298.
13. Romanowicz P.J., Szybinski B., Wygoda M. Application of DIC Method in the Analysisof Stress Concentration and Plastic Zone Development Problems / Materials, 13(16), 2020. 38 p.
14. Sivák P., Delyová I., Bocko J. Comparison of Stress Concentration Factors Obtained by Different Methods / Applied Sciences, Vol. 13, Iss. 24, 2023. 20 p.
15. Sahin M.I., Özkan M.T. Stress concentration factors for bending with symmetric opposite notches in thin beam evaluated by FEM and ANN / Materials Testing, 67(11), 2025. 17 p.
16. Stochioiu C., Marinescu V.-M., Tudose D. I., Hadar A. Determination of Stress Concentration Effects Using Micro-Digital Image Correlation Techniques in PMMA Specimens / Materiale Plastice, 59(2), 2022. 9 p.
17. Zengah S., Baltach A., Djebli A., Compilation of Stress Concentration Factors in the Vicinity of a Geometric Discontinuity in Structures / Engineering, Materials Science. Acta Universitatis Sapientiae Electrical and Mechanical Engineering, 16, 2025. Р. 1–15.
18. Huang Ning, Hu Ming-hui, Zhang Li-hua Stress Concentration Numerical Analysis of a Panel with Big Grooves / 2010 International Conference on Computing, Control and Industrial Engineering, 2010. Р. 149-152.
19. Afshar R., Berto F., Lazzarin P., Pook L. Analytical expressions for the notch stress intensity factors of periodic V-notches under tension by using the strain energy density approach / J. of Strain Analysis for Eng. Design, 48(5) 2013. Р. 291-305
20. Hosseinabadi R. Stress analysis of periodic notches by using the strain energy density approach / Stress analysis of periodic notches by using the strain energy density approach: PhD Dissertation, 2014. 249 р.
21. Lazzarin P., Afshar R., Berto F. Notch stress intensity factors of flat plates with periodic sharp notches by using the strain energy density / Theoretical and Applied Fracture Mechanics, 60(1), 2012. Р. 38-50.
22. Afshar R., Berto F. On three-dimensional stress analysis of periodic notched plates under tension / Science China. Physics, Mechanics & Astronomy, Vol. 57, 2014. Р. 751–1757.
23. Golubiatnikov K., Vild M., Wald F. A numerical-analytical prediction of the net cross-section resistance of weakened tensile plates. – Prague: Czech Technical University, 2025. 53 p.
24. Ortega-Herrera F.J., Lozano-Luna A., Razón-González J.P., García-Guzmán J., Figueroa-Godoy F. Mathematical Model to Predict the Stress Concentration Factor on a Notched Flat Bar in Axial Tension / Proc. of the 5th Internat. Symp. on Experimental Mechanics (ISEM-SOI), 2015. Springer, 2015. Р. 265-272.
25. Yunfeng Shi, Bo Wang, Hao Wu, Bin Wang, Changzhi Liu, Rui Li A Theoretical and Experimental Study on Extreme Stress Concentration-Free Designs of Circumferentially Notched Thin Cylindrical Shells / Journal of Applied Mechanics, 87(2), 2019. Р. 1-16.