Significant thermal stresses arising in thin-walled metal materials and structures loaded with tensile stresses can lead either to their complete destruction or to the appearance of discontinuity zones in them. The equa-tions for calculation of temperature stresses in flat thin-walled structures at their localized thermal heating caused by the action of concentrated energy flows are analyzed. As an example, a thin-walled stretched plate subjected to strong local heating in a circular spot is considered. The developed model takes into account the change of elastic characteristics under strong local heating and the change in the thickness of the material in the heating spot. As an example, the diagram of the distribution of tangential stresses for a stretched plate in the area of a circular heating spot is given. Thus, the results of the study show that there is a rupture and concentration of stresses along the contour of the heating spot from the cold zone.
1. Patsyuk A.G. Experimental investigation of the load-carrying capacity of shells with combined static loading and local thermal shock. Strength of Materials. 1989. 20 (12). P. 1602 – 1604.
2. Zhao J., Sun C., Yuan Y. Crack formation on the cylindrical shell damaged by inner pressure and surface laser irradiation. 30th Plasmadynamics and Lasers Conference. 1999. P. 99 – 3548.
3. Rogovenko T., Zaitseva M. Statistical modeling for risk assessment at sudden failures of construction equipment. MATEC Web of Conferences Volume 129, 7 November 2017, International Conference on Modern Trends in Manufacturing Technologies and Equipment, ICMTMTE 2017; Sevastopol; Russian Federation; 11 September 2017 to 15 September 2017; DOI: 10.1051/matecconf/201712905014
4. Tang Z., 3D discrete meso-element simulation of failure processes for cylindrical shell subjected to inner pressure and surface laser irradiation. Explosion and Shock Waves. 200. 21 (1). P. 1 – 7.
5. Liu F., Wu Z.-S., Wang Y.-H., Chen Y.-S. at al. Estimation of laser beam-parameters based on damage configuration of a cylindrical shell subjected to internal pressure. Zhongguo Jiguang. 2007. 34 (6). P. 797 – 803.
6. Wang Y.-H., Liu F., Chen L.-Z., Guti Huojian Jishu L.-J. Analysis on characteristic temperature on damage of pressurized metal shell irradiated by intense laser beam. 2008. 31 (5). P. 512 – 516.
7. Wang Y.-H., Han F., Liu Y., Wang J.-G. Evaluation of pressurized cylindrical shell damage induced by high energy laser irradiation(II)-Distribution feature of fracture parameters subjected to local thermal loading, Guti Huojian Jishu. Journal of Solid Rocket Technology. 2009. 32 (5). P. 548 – 553.
8. Rogovenko T., Zaitseva M. Statistical modeling for assessment of dipper stick service life. Materials Science Forum, 2018931 MSF. P. 417 – 421.
9. Wang Y., Liu F., Zhang X., Ding S. Numerical simulation on similarity of thermal-mechanical effects of thin-walled pressure vessel irradiated by laser. Advanced Materials Research. P. 1965 – 1969.
10. Deryushev V.V, Bendyukov V.V., Kostoglotov A.I., Yunak Yu.I. at al. Criterial fracture analysis of cylindrical shell structures loaded by an internal pressure under a localized thermal shock. Strength of Materials, 1997. 29 (5). P. 481 – 486.
11. Kostoglotov A.I., Bendyukov V.V., Deryushev V.V., Shevtsova L.A. Investigation of the process of stability loss for smooth thin-walled cylindrical shells under the local action of a radiation pulse. Strength of Materials. 2004. 36 (5). P. 489 – 493.
12. Biderman V.L. Mechanics of thin-walled structures, Statics, Moscow, Mechanical Engineering, 1977. 488 p.
13. Rogovenko T., Zaitseva M. Use of statistical simulation in construction planning. MATEC Web of Conferences. 2017, May. 106 (23). International Science Conference on SMART City, SPbWOSCE 2016; Peter the Great Saint-Petersburg Polytechnic University, Institute of Civil EngineeringSaint-Petersburg; Russian Federation; 15 November 2016 to 17 November 2016; DOI: 10.1051/matecconf/201710608011
Deryushev V.V., Zaitseva M.M., Evseev D.V., Kosenko E.E. The concentration of thermal stresses in metal materials and construction under local heating. Construction Materials and Products. 2019. 2 (3). P. 72 – 77.