Application of finite element analysis of thin steel plate with holes

It is known that elements of structures, during the exploitation, are exposed to different types of loads. During certain time intervals load may be static or dynamic. The same, in certain parts of the construction, it can cause states such as dynamical, thermal and other stresses. Indicators of these states are stress, strain, vibration, temperature, etc. The most significant stress state is the one on the basis of which may be determined basic dimensions of parts of a structure. Besides, loads can cause such states in which elements of structures cannot properly perform their functions. Therefore, for evaluation of safety and reliability of components and structures as a whole, [1, 2, 3, 12], it is necessary to know the size and distribution of stress, which depends on the size and type of load. These are also influenced by the size and type of stress, as well as by the shape of that element, material, location in relation to the direction of external loads, etc. Structural components that form part of a structure are, in most cases, of complex geometric shapes. Examinations have shown that, in places where cross section decreases, the stress increases. This phenomenon is called the stress concentration. Typical sources of stress concentration in the elements of design are the openings that may be of different shapes (square, rectangular, trapezoidal, triangular, elliptical, circular, semicircular, etc.). The rectangular shaped hole is very distinctive, because of sharp transitions between sides. In order to mitigate the