Modeling the Onset and Growth of Damage in Composite Cylinders under Lateral Pressure Loading Between Parallel Plates

Abstract

The present study examines the experimental and numerical investigations of the behavior and initiation and the development of the filament wound glass fiber/polyester composite cylinders under the loading of the lateral pressure between the parallel rigid plates. According to ASTM D2412- 02 standard, the samples were organized between the parallel rigid plates under the pressured loading. In addition to conducting experimental tests, numerical simulation was performed using ABAQUS commercial software. In order to take into account the effects of the initiation and the development of damage, the 3D Hashin damage model has been utilized. To apply 3D Hashin damage model, a UMAT subroutine coding procedure was conducted using the Fortran 77 program. Using micro mechanical relations concerning the layers, the definition of mechanical properties and the fracture strength of the composite cylinder were separately obtained based on measuring fiber and resin properties and the relative standard. During the whole tests, experimental observations, including the level of failure due to loading and the cause of the occurrence of different mechanisms of damage, have been discussed. Comparison of the results of the experimental tests with the result of numerical simulation has an appropriate agreement with each other.