NASA NTRS · 19810023037
Development of an orthotropic hole element
Abstract
A finite element was developed which adequately represents the state of stress in the region around a circular hole in orthotropic material experiencing reasonably general loading. This was achieved with a complementary virtual work formulation of the stiffness and stress matrices for a square element with center circular hole. The assumed stress state provides zero shearing stress on the hole boundary, so the element is suitable for problems involving load transfer without friction. The element has been implemented in the NASTRAN computer program, and sample problem results are presented.
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Smith, C. V., Markham, J. W., Kelley, J. W., Kathiresan, K.. 1981-08-01. Development of an orthotropic hole element. https://ntrs.nasa.gov/citations/19810023037
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