Research of the reliability of a modular fire extinguishing system based on the forwarder Amkodor-2661
- Authors: Skobtsov I.G.1, Galaktionov O.N.1, Sulkonen M.S.1
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Affiliations:
- Petrozavodsk State University
- Issue: Vol 20, No 4 (2023)
- Pages: 74-88
- Section: Articles
- URL: https://bakhtiniada.ru/2307-0048/article/view/356714
- DOI: https://doi.org/10.15393/j2.art.2023.7343
- ID: 356714
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Full Text
Abstract
Forest fires are still a serious global problem. Therefore, designing of modern forest fire fighting machines is an important problem. This paper deals with the investigation of reliability of forest fire fighting system at the design stage by using fracture mechanics and possibility theory application. Usage justification and some advantages of using wheeled forwarders as basic machines for the installation of forest fire fighting systems are presented in the introduction. The basic fracture mechanics equations linking stress intensity factor with crack-like defect length are presented in the first part of the paper. Fracture toughness and crack-like defect length are viewed as Gaussian random values; maximum applied stress is presented as a fuzzy variable with unknown distribution law. Analytical equations for reliability evaluation are obtained by estimation of upper and lower bounds of reliability function. The real value of this measure is located within this interval. The estimation of reliability function by the example of the supporting frame of a modular firefighting system based on forwarder Amkodor-2661 is presented in the second part of the paper. The stress intensity was determined by the finite element method. The calculation is carried out for the variant of presence of an edge type of crack in material. The interval of reliability function values is calculated. It is important to know the upper value of failure probability and, accordingly, the lower one as the most provided value of reliability function. The proposed method may be used to assess the reliability of structural elements of forest machines with limited statistical information.
About the authors
Igor Gennadievich Skobtsov
Petrozavodsk State University
Author for correspondence.
Email: iskobtsov@mail.ru
Oleg Nikolaevich Galaktionov
Petrozavodsk State University
Email: galakt@petrsu.ru
Maxim Sergeevich Sulkonen
Petrozavodsk State University
Email: maks.sulkonen@list.ru
References
- Gromtsev A. N. State Environmental Report of the Republic of Karelia in 2021. Petrozavodsk, 2022. 263 p. (In Russ.)
- Gazizov A. M., Yangirova R. R. Modern methods of fighting forest fires. Oil and Gas Business, 2021, no. 1, pp. 25–39. (In Russ.)
- Vycherova N. R., Budevich E. A., Belyaev A. E. Development of a forest fire early detection system using unmanned aerial vehicles and artificial intelligence. Resources and Technology, 2022, no. 19 (4), pp. 85–101. (In Russ.)
- Skobtsov I. G., Shilovsky V. N., Dobrynina O. L. Estimating the reliability of forestry machine elements with possibility theory application. IOP Conference Series: Earth and Environmental Science, 2022, vol. 954. URL: https://iopscience.iop.org/article/10.1088/1755-1315/954/1/012071. Text. Image: electronic.
- Pitukhin A. V. Optimal design problems using fracture mechanics methods. Computers and Structures, 1997, vol. 65 (4), pp. 621–624.
- Dubois D., Prade H. Possibility Theory: An Approach to Computerized Processing of Uncertainty. New York: Plenum Press, 1988. 288 p.
- Zadeh L. A. Fuzzy sets. Information and Control, 1965, vol. 8, pp. 338–353.
- Utkin L. V. Analysis and Decision Making with Incomplete Information. Saint Petersburg: Nauka, 2007. 404 p. (In Russ.)
- Dempster A. P. Upper and lower probabilities induced by multivalued mapping. Annals of Mathematical Statistics, 1967, vol. 38 (2), pp. 325–339.
- Berger J. O. Statistical Decision Theory and Bayesian Analysis. New York: Springer-Verlag, 1985. 617 p.
- Tonnon F., Bernardini A., Mammino A. Reliability analysis of rock mass response by means of random set theory. Reliability Engineering and System Safety, 2000, vol. 70 (3), pp. 263–282.
- Irwin G. R. Fracture dynamics. In: Fracturing of Metals. ASM Publ., 1948, pp. 147–166.
- Savruk M. P. Stress Intensity Factors in Solids with Cracks. In: Fracture Mechanics and Strength of Materials: Resource Book in 4 Volumes. Vol. 2 / Ed. by V. V. Panasyuk. Kiev: Naukova Dumka, 1988. 620 p. (In Russ.)
- Serensen S. V., Kogaev V. P., Shneyderovich R. M. Load-Carrying Capacity and Machine Element Strength Analysis. Moscow: Mashinostroenie, 1975. 480 p. (In Russ.)
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