Περίληψη:
Laminated fiber-reinforced composite stiffened plate with [0/90/±45]s plies made of S-Glass/epoxy
are evaluated via computational simulation to study damage and fracture progression. The loads are
pressure and temperature which varies from 21 to 65.5 °C (case I) and from 143.3 to 21 °C (case II). An
integrated computer code is used for the simulation of the damage progression. Results show that damage
initiation begins at low load level, with matrix cracking at the 0° (bottom and top) plies, fiber fracture at
the bottom (0°) ply and interply delamination at the top (0°) ply. Increasing the applied pressure, the
damage growth is expended resulting in fracture through the thickness of the structure. At this stage,
90 percent of the plies damage at applied pressure 15.306 MPa for the case I and 15.036 MPa for the
case II. After this stage the cracks propagate rapidly and the structure collapses.