Strength estimation method for metal structures of hoisting equipment

Metallurgy and Materials

The main problem considered in this article is prediction of strength for welding structures of hoisting equipment. Developed is a method of estimation of plastic strain limits for welding structures that takes into account all the most important factors influencing strength and plastic properties of a welding joint (such as stress concentration factors and residual stresses, environment temperature). These factors are implemented with the help of a special welded model. The static test, described in this article, was conducted at normal temperature. Analysis of the stress-strain state of the fracture area is based on the finite element method. As a result of investigation the limits of the plasticity of the welding joint were estimated