Delamination is a recognized, major failure mechanisms for composites. The separation of the internal layers within a composite, caused by high through-the-thickness stresses, can arise due to manufacturing defects or from impacts occurring during assembly or whilst in-service. Delamination can … Read More
The linear buckling analysis is widely used for determining the load level at which the structure loses its stability. In reality, structures may be sensitive to even small imperfections in their shape, which is accounted for by applying large factors … Read More
A thin-walled axially compressed CFRP cylinder was studied using the large deformation analysis. Different numbers of axial, circumferential and combined imperfection waves were used to represent the initial shape of the structure. Three examples are shown at the bottom of … Read More
Decreased buckling loads and geometrical imperfections are closely related for thin-walled cylinders. By definition, a geometrical imperfection is a deviation from the perfect cylindrical geometry. An example is shown in Figure 1. Geometrical imperfections have been demonstrated to have clearly … Read More
Thin-walled cylindrical shells (radius-to-thickness ratio of 160-500) under different loading conditions have been studied for structural stability (Figure 1). Based on this study, guidelines for the selection of the element mesh density have been set. A set of problems presented … Read More
The properties of fiber-reinforced composite structures can be tailored with layer orientations and stacking sequence. For example, you can design your laminate so that under a tensile load it twists, but at the same time it does not bend nor … Read More
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