10.14489/td.2018.07.pp.036-042

2018, 07 July

DOI: 10.14489/td.2018.07.pp.036-042

Bukleshev D. O.
MODELING OF FRACTURE OF TUBULAR STEEL OF WELDED SEAM WELDED JOINTS IN THE MODULE FATIGUE MODULE FOR EVALUATION OF ACCIDENTS IN THE OPERATION OF MAIN PIPELINES
(pp. 36-46)

Abstract. The degree of stressed-deformed state and magnitude of stress is known to be the reason for pipeline welded element failure. No-failure operation of pipeline weld-affected zones demands avoidance of weldment destruction while operating under cyclical load. The influence of cyclical loads on the stressed-deformed state and material fatigue is investigated in this work. To consider stress in pipeline weld-affected zones, Gerber's theory is applied which is used for plastic materials. Computer thermal analysis, simulation of pumping loads, strength analysis and metal fatigue modeling is used to research the processes occurring in metal of pipeline weld-affected zones. To get pipeline safe operation, the number of stress cycles to failure of stressed-deformed weld-affected zones is defined.

Keywords: main pipeline, stress cycle, weld-affected zone, stressed-deformed state, safe-load factor, metal deformation.

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D. O. Bukleshev (Federal State Budgetary Educational Institution of High Education “Samara State Technical University”, Samara, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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1. Bukleshev D. O., Yagovkin N. G. (2016). Computer modeling of the formation of defects in the welded zones of gas pipelines. Teoriya. Praktika. Innovacii, (9), pp. 40-48. [in Russian language]
2. Bukleshev D. O. (2016). The formation of defects in the weld zones of welded joints of main gas pipelines under the influence of the workloads. Truboprovodniy transport: teoriya i praktika, 54(2), pp. 31-35. [in Russian language]
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4. Goryainov D. S., Balakirov S. N., Gusev A. A. (2015). Modeling and research of laser welding of steel U10А. Proceedings of the International scientific and technical conference «Actual problems of tribology». (pp. 153-156). Samara. [in Russian language]
5. Berendeev N. N. (2012). Methods for solving fatigue problems in a package ANSYS WORKBENCH: textbook manual. Nizhniy Novgorod: Nizhegorodskiy gosudarstvennyi universitet. [in Russian language].

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DOI: 10.14489/td.2018.07.pp.036-042

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