Simulation of the stress concentration process in a fiber plate with strengthening holes

The results of studies of strains in composite structural elements with various types of stress concentrators are studied in the article on the example of boron aluminum; various ways to reduce the stress concentration factor by establishing reinforcing holes are considered: an analytical solution, taking into account the structural non-homogeneity of the material and the finite element method. A review of publications on the topic of research is given and, using a specific example, stress reduction by adding a second hole to the existing one along the vertical line is shown. A computational experiment was conducted to study the influence of two vertical holes. It was established that an additional hole causes an increase in stresses; however, the mutual influence of the holes reduces the overall stress state in the vicinity of concentrators.