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Heating and Heat treatment
ArticleName Influence of non-stationary heating on the strength of fittings made of 09G2S steel
DOI 10.17580/chm.2021.08.07
ArticleAuthor Nguen Wang An, L. N. Moskalev, S. I. Ponikarov

Kazan National Research Technological University (Kazan, Russia):
Nguen Wang An, Graduate student, Dept. of Machines and Apparatus of Chemical Production
L. N. Moskalev, Cand. Eng., Head of Laboratory, Dept. of Machines and Apparatus of Chemical Production, e-mail:
S. I. Ponikarov, Dr. Eng., Prof., Head of Dept. of Machines and Apparatus of Chemical Production


The influence of non-stationary heating and constant power loads on the strength of the fitting-shell connection made of cold-resistant 09G2S steel grade is considered. From such steel various chemical, petrochemical, oil, gas, power equipment is made. According to existing methods, the calculation of welded joints for strength is carried out only on one of two conditions: either overpressure or constant temperature. Therefore, the task of calculating the strength of nodes of intersections of thin-walled shells, namely the connection of the fitting with the shell while loading the node with a constant force load with non-stationary heating can be considered relevant. Solutions to these problems in the analysis of technical literature are not identified. Such loadings are possible in such situations as accidents, incidents, sharp input in the device of hot environment, fire in the zone of fitting – shell connection, etc. Numerical experiments of the stress-strain state of the node connection of fittings have shown that the maximum equivalent stresses increase rapidly and then decrease with a return to stationarity. It is known that equipment of chemical and petrochemical industries is often used in conditions of high temperatures and pressures required for technological processes. Factors such as personnel safety and equipment life expectancy affect the efficiency and economy of any business.

keywords Intersection of thin-walled shells, fitting, equivalent stresses, non-stationary heating, accidents, industry

1. Federal norms and rules in the field of industrial safety “Rules of industrial safety and dangerous production facilities with equipment working under excessive pressure”. Approved by the Order of the Federal Service for Environmental and Technological and Atomic Supervision No. 116, March 25, 2014.
2. Ponikarova A. S., Zotov M. A., Salin A. A. Management model of sustainable development of petrochemical industry enterprises. J. Phys.: Conf. Ser. 2020. 1679 052031.
3. GOST 34233.3–2017. Vessels and apparatus. Norms and methods of strength calculation. General requirements.
4. Guideline No. 26-18-8-89. Welded joints for welding hatches, fittings and couplings. Basic types, design types and sizes.
5. Fedoseev V. I. Material resistance. Moscow: Izdatelstvo MGTU imeni N. E. Baumana, 1999. 592 p.
6. Company standard No. 02494680-0046-2005. Welded joints of steel structures. General requirements for design, manufacture and installation. Order of CJSC Melnikov Central Research and Design Institute of Steel Structures dated 27.01.2005.
7. Valeev S. I., Kharlamov I. E. Forecasting the resource of bulk-capacity equipment with crack-like defects. Materials Today: Proceedings. 2019. Vol. 19. Nos. 5. pp. 2488–2490.
8. GOST 34233.1–2017. Vessels and apparatus. Norms and methods of strength calculation. General requirements.
9. Gallagher R. Finite Element Analysis: Fundamentals. Translated from English. Moscow: Mir, 1984. 428 p.
10. Samarskiy А. А., Nikolaev Е. S. Methods for solving grid equations. Moscow: Nauka, 1978. 592 p.
11. Smirnov Е. М., Zaytsev D. К. Finite volume method in application to problems of hydrogas dynamics and heat transfer in domains of complex geometry. Nauchno-tekhnicheskie vedomsti SPbGPU. 2004. No. 2(36). pp. 70–81.
12. Shilko E. V., Psakhie S. G., Schmauder S., Popov V. L., Astafurov S. V., Smolin A. Yu. Overcoming the limitations of distinct element method for multiscale modeling of materials with multimodal internal structure. Computational Materials Science. 2015. Vol. 102. pp. 267–285.
13. Aleksidze М. А. Fundamental functions in approximate solutions of boundary-value problems. Moscow: Nauka, 1991. 352 p.
14. Skopinskiy V. N., Berkov N. А., Vozhova N. V. A new criterion for determination of the maximum load in pressure vessels with nozzles. Mashinostroenie i inzhenernoe obrazovanie. 2011. Vol. 51. No. 3. pp. 50–57.
15. Skopinskiy V. N., Berkov N. А., Smetankin А. B. Stresses in pipelines tee connections at the combined loading. Mashinostroenie i inzhenernoe obrazovanie. 2007. Vol. 47. No. 2. pp. 34–45.
16. Gwaltney C., Corum J. M., Bolt S. E., Bryson J. W. Experimental Stress Analysis of Cylinder-to-Cylinder Shell Models and Comparisons With Theoretical Predictions. Journal of Pressure Vessel Technology. 1976. Vol. 98. No. 4. pp. 283–290.
17. Xue L., Widera G. E. O., Sang Z. Parametric FEA study of burst pressure of cylindrical shell intersections. Journal of Pressure Vessel Technology. 2010. Vol. 132. No. 3. pp. 31203–31210.
18. Chandrupatla T. R., Belegundu A. D. Introduction to Finite Elements in Engineering. Prentice Hall, New Jersey. 2002. 473 p.
19. Logan D. L. A First Course in the Finite element Method. Cengage Learning, 6th Edition. 2017. 727 p.
20. Ahmad T., Khan M. A., Redekop D. Pressurised Shell Intersections with Local Area Wall Thinning. Transactions SMiRT. 2007. Vol. 5. No. 19. pp. 1–9.
21. Nguen V. А., Moskalev L. N., Ponikarova I. N., Ponikarov S. I. Computer simulation of temperature stresses in process vessels at the insertion points of fittings at SOLIDWORKS. Vestnik Tekhnologicheskogo universiteta. 2019. Vol. 22. No. 7. pp. 144.
22. Rules and regulations in nuclear energy No. 7-002-86. Calculation Codes of strength of equipment and pipelines of nuclear power plants.

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