Zhangabay Nurlan, Sapargaliyeva Bayan, Suleimenov Ulanbator, Abshenov Khassen, Utelbayeva Akmaral, Kolesnikov Alexandr, Baibolov Kanat, Fediuk Roman, Arinova Dinara, Duissenbekov Bolat, Seitkhanov Azamat, Amran Mugahed
Department of "Construction and Construction Materials", M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan.
Abai Kazakh National Pedagogical University, Almaty 050010, Kazakhstan.
Materials (Basel). 2022 Aug 19;15(16):5732. doi: 10.3390/ma15165732.
In the study, experimental and theoretical studies were carried out to assess the influence of the shapes of dents in the tank wall on the stress-strain state of the defect zone. By testing fragments of a cylindrical tank, it was found that the most appropriate expression is (5), which could take into account the leaching of the tank wall, resulting in a decrease in the stress concentration index. At the same time, during theoretical studies in this paper, it was found that polynomials determined the stress concentration coefficient, where the obtained analytical expression data were compared with the data determined numerically in the ANSYS program, and it was found that the spread was from 2% to 10%. According to the results of a numerical study of the stress-strain state of the dent zone in the tank wall, graphical dependences of the stress concentration coefficient on the dimensionless depth of the dent for various values of the dimensionless radius of the dents and do not exceed 2% of the indicators that are obtained. At the conclusion of the experimental and numerical studies, a conclusion was made about the degree of influence of the geometric dimensions of the dents on the stress concentration index.
在该研究中，开展了实验和理论研究，以评估罐壁凹痕形状对缺陷区域应力应变状态的影响。通过对圆柱形罐体碎片进行测试，发现最合适的表达式是(5)，它可以考虑罐壁的腐蚀，从而导致应力集中指数降低。同时，在本文的理论研究过程中，发现多项式可确定应力集中系数，将所得解析表达式数据与ANSYS程序中数值确定的数据进行比较，发现偏差在2%至10%之间。根据罐壁凹痕区域应力应变状态的数值研究结果，应力集中系数与凹痕无量纲深度对于不同凹痕无量纲半径值的图形相关性，且不超过所获得指标的2%。在实验和数值研究结束时，得出了凹痕几何尺寸对应力集中指数的影响程度的结论。
