ON THE DELAMINATION OF THE VISCOELASTIC COMPOSITE CIRCULAR PLATE

摘要

Delamination of the rotationally symmetric circular plate from viscoelastic composite material is investigated. It is supposed that there is a penny-shaped crack, in this plate and the crack edges have an insignificant initial rotationally symmetric imperfection. The lateral boundary of the plate is clamped and is compressed through a rigid body, which holds this boundary, by the uniformly distributed normal dorces along the radial direction. The investigations are carried out in the framework of the exact geometrically non-linear equations of the theory of viscoelasticity and as a delamination criterion the case for which the initial imperfection of the crack edges start to increase indefinitely is taken. Under obtaining numerical results Laplace transform and FEM is employed. In the particular cases, the obtained results are compared with the known results for elastic composites.