On the model of the thermomechanical behavior of silica glasses and its constructions

The construction of the defining relations of thermomechanical behavior of silica glasses in the glass transition and softening in two different ways is considered. Found that both approaches predict almost identical laws of evolution of stresses in the quartz rod in a glass. The application of a model to describe the formation of stress and strain fields in a continuous circular inhomogeneous quartz cylinder (billet rod power of anisotropic optical fibers) in cooling and heating is shown.