Micromechanics and Stress Analysis of a Composite Cylinder

Application ID: 67001

The use of fiber composites in the manufacturing industry is increasing. Compared to traditional metallic engineering materials, fiber composites are lighter and more corrosion resistant, and properties like strength, stiffness and toughness can often be tailored to a specific application. A fiber composite consists of load carrying fibers embedded in a polymer resin. The composite material is typically a laminate of individual layers, where the fibers in each layer are uni-directional. In this model, we perform a stress analysis of a laminated composite cylinder.

Modeling individual fibers in every layer in the laminate is unfeasible. A simplified micromechanics model of a single carbon fiber in epoxy is instead used to estimate the elastic properties of a single layer. These properties are then used in the homogenized model of the laminated composite cylinder. Two approaches are used to model the laminate, namely the Layerwise (LW) theory, and the Equivalent Single Layer (ESL) theory.

This model example illustrates applications of this type that would nominally be built using the following products: