Deformation and Long-Term Damage of Physically Nonlinear Fibrous Materials

A theory of long-term damage of fibrous composites with physically nonlinear matrix is proposed. The damage of the matrix is modeled by random micropores. The damage criterion for a microvolume is characterized by its stress-rupture strength. It is determined by the dependence of the time to brittle failure on the difference between the equivalent stress and its critical value, which is the tensile strength, according to the Huber–Mises...