ANALYSIS OF THE STRAIN OF A SUBSOILER CHAIN LINK AND ITS FORMING BEHAVIOR UNDER STATIC LOADING

• Datum: 2026
• Hauptverfasser: SHELUDCHENKO, B. A., SYROID, Ye. S.
• Format: Artikel
• Veröffentlicht: текст 3 2026
• Online Zugang: https://journal-itm.dp.ua/ojs/index.php/ITM_j1/article/view/194
• Назва журналу: Technical Mechanics

Optimizing the regulated safety factor and service life of load round-link chains is an important national economic task, given their wide range of application in machine structures and technological equipment. The goal of this study is to investigate the strain of round-link chain links and to substantiate criteria for the end of their service life. Mechanical testing was performed using specially prepared five-link specimens of short-link and long-link Grade G80 load chains with diameters of 3, 4, 5, 6, and 8 mm manufactured from 20MnNiCrMo5-2 steel in accordance with ASTM A391.  A static axial load on the chain specimens was simulated by a gradual monotonic increase in force from zero up to the failure of one of the specimen links using an R-50M1 tensile testing machine. A basis for developing recommendations on defect detection criteria for chains under operational loading by external forces was a methodology based on comparing the equivalent (or principal) logarithmic strain obtained experimentally with that determined according to the Hencky and the Swainger criteria. The results of shape transformation of round-link chain links are presented. Absolute and relative values of the deformation and contour shape and overall dimension change of short-link and long-link load chains with diameters of 3, 4, 5, 6, and 8 mm were determined. Based on a comparison between the shape change measure of the infinitesimal deformation approximation according to the Hencky and the Swainger criteria and experimentally determined limiting values of pitch deformation in load round-link chains, a unified rejection criterion independent of chain diameter was established. It is proposed to set the absolute value of this criterion at . REFERENCES 1. Getun G. V., Bezlubenko I. S., Balina O. I., Butsenko Yu. P. Construction principles and features static calculation of arcs. Spatial Development. 2022. No. 1. Pp. 43-55. (In Ukrainian).https://doi.org/10.32347/2786-7269.2022.1.43-55 2. Shevchenko V. D., Piskunov V. H., Fedorenko Yu. M. et al. Structural Mechanics of Metal Structures of Road-Building, Hoisting, and Transport Machines. Piskunov V. H. Piskunov, V. D. Shevchenko (Eds.). Kyiv: Vyshcha Shkola, 2004. 438 с. (In Ukrainian). 3. Bezklubenko I., Geptun G. Chain line as an optimum form for stable structures. Urban Development and Spatial Planning. Kyiv: Kyiv National University of Construction and Architecture, 2025. No. 90. Pp. 285-315. URL: http://mtp.knuba.edu.ua/issue/archive (Last accessed on March 19, 2026). (In Ukrainian). 4. Troshchenko V. T. Deformation and Destruction of Metals Under Multicycle Loading. Kyiv: Naukova Dumka, 1981. 343 pp. 5. Troshchenko V. T., Khamaza L. A. Nonlocalized and localized fatigue damage in metals and alloys. Visnyk TNTU. 2014. V. 76. No. 4. Pp. 7-21. URL: https://elartu.tntu.edu.ua (Last accessed on March 29, 2026). 6. Troshchenko V.T. Fatigue of metals under nonuniform stress. Message 1. Stress assessment methods and research results. Strength of Materials. 2010. No. 2. Pp. 5-24.https://doi.org/10.1007/s11223-010-9200-x 7. Yarosh Ya., Sheludchenko B., Kondratiuk A., Biletskiy V., Pluzhnikov O. (2020). In a building visual-plastic environment the equal "chain line" moving flexible lines. Scientific Horizons. 2020. V. 23. No. 4. Pp. 65-71. (In Ukrainian).https://doi.org/10.33249/2663-2144-2020-89-4-65-71 8. Kondratiuk A., Šarauskis E., Sheludchenko B., Kukharets S., Jasinskas A., Zabrodskyi P., Shubenko V. Substantiation of the use of a flexible chain-type subsoiler for improving the agrotechnological properties of soil. Sustainability. 2024. V. 16. Art. 5355. 9. Nadykto V., Domeika R., Golub G., Kukharets S., Chorna T., Česna J., Hutsol T. Research on a machine-tractor unit for strip-till technology. AgriEngineering. 2023. V. 5. Pp. 2184-2195. 10. Sheludchenko B. А., Biletsky V. R., Borovsky V. M., Pluzhnikov O. В., Trosteniuk Y. V. Studies generalization of shape change of equipotential surfaces of stress-deformed objects. Technical Engineering. 2023. No. 1 (91). Pp. 110-118. (In Ukrainian). 11. Sheludchenko B., Syvak B., Pluzhnikov O. Forming Dynamics in Conditions of a Compound Stress. Saarbrücken: LAP LAMBERT Academic Publishing, 2015. 156 pp. (In Ukrainian).