Consistent Stresses for the Finite Element Stiffness Method.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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Conjugate basis functions which are continuous throughout a model are used to approximate a stress field. This conjugate approximation has less mean error than approximations calculated using conventional finite element methods and is a better approximation at extreme values of stress. This thesis consists of two major parts. The appropriate analytic expressions for conjugate stress fields are set forth and applied to the constant strain triangle finite element. Analyses are then performed with these new stress calculations and the results compared to some previous stress calculations. Author