The effect of a polymer material coating on the stress state of plate building structures with holes

Polymeric materials, in particular reinforced coatings, are widely used for the repair of worn and damaged plate building components of various types. Coatings made of polymeric materials not only increase the plate components’ thickness and smooth out the surface roughness, but also provide a reduction in stresses in the region of existing holes or perforations. The article presents a calculation technique that allows to increase the accuracy and reliability of determining the ability of coatings made of polymer materials to reduce stress concentration. Mathematical models for determining the stress state parameters of a plate building component with holes covered with a polymer material are obtained. The calculations confirmed that the use of polymeric materials as a coating reduces the normal and tangential stresses arising at the edge of the hole.