Strength and deformation of polymer pieces at the light industry

Abstract

The article is devoted to elaboration of engineering method to evaluate both strength and deformation of polymer details at light industry on the shoe sole example. Analytical dependences for determining the strength and deflection of a cantilever beam made of viscoelastic material are obtained. These dependences allow to estimate the behavior of the shoe soles with high heels while wearing the shoes. In mathematical modeling of cantilever beam load the material properties that do not meet Hooke's law are taken into account. Strength calculations provide the possibility to determine the sole’s optimal geometric parameters, namely its thickness and the shape of the running surface corrugations. Deflection calculations allow predicting the sole deformation value respectively to the heel at the time of its contact with the ground surface to ensure shoes form stability.