基礎微分方程式を考慮した一次関数変位場をもつ有限要素の剛性評価に関する研究

概要

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Long period (2.5-12 sec) seismic motions on the A new method for evaluating the stiffness of the finite element with bilinear and trilinear displacement functions is proposed. In this method, an approximate solution of the differential equation in the displacement field of the finite element is used to obtain the 'stiffness matrix of the element. Several numerical examples of plates and shells are solved for investigating the effectivness of the analysis by the present method. The results show the method is better than those by the minimum potential energy method in the precision of analysis. It is also clarified that the reduced integration method proposed by Zienkiewicz and his co-workers and the method by using Wilson's nonconforming element are the same as the present method in the concept. Therfore these methods should be used with hybrid displacement method.
社団法人日本建築学会の論文
1990-11-30