Coupled processes of deformation and damage of composites with orthotropic inclusions and unbounded rupture-stress function |
| |
Authors: | L P Khoroshun L V Nazarenko |
| |
Institution: | 1.S. P. Timoshenko Institute of Mechanics,National Academy of Sciences of Ukraine,Kyiv,Ukraine |
| |
Abstract: | The theory of long-term damage of homogeneous materials, which is based on the equations of the mechanics of stochastically
inhomogeneous materials, is generalized to composite materials reinforced with orthotropic ellipsoidal inclusions. The microdamage
of the composite components is modeled by randomly dispersed micropores. The failure 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 limit, which is the tensile strength, according to the Huber–Mises criterion, and assumed to
be a random function of coordinates. Given macrostresses or macrostrains, an equation of porosity balance in the composite
components at an arbitrary time is formulated. The time dependence of microdamage and macrostresses or macrostrains is established
in the case of unlimited stress-rupture microstrength described by an exponential power function |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|