Almost all the structures in the fields of practical engineering are applied with various
kinds of holes, for example, there are manholes in the plane wings. When the structures are
subject to loads, the stress concentration will appear around the holes, which will reduce both
the static strength and the fatigue strength. In this paper, in view of the orthotropic plate with
manholes, the calculation model was established based on complex function, and the analytic
solution of hole-edge stress of orthotropic plate with complex hole shape was figured out. By
virtue of mapping function, the parametric equation which accurately describes hole boundary
was obtained. As a result, based on the established model, under different fiber array, the holeedge
stress of composite material plate with wing manholes was calculated, and stress
distributions around the holes under two kinds of fiber array were compared. Thus this study
provides theoretical reference for design of flywheel.
Keywords: exact analytic solutions of stress on hole edge; orthotropic; opening problems; different fiber arrays; wing manhole; elastic solution.
full paper (pdf, 1216 Kb)