土木学会論文集A2(応用力学)
Online ISSN : 2185-4661
応用力学論文集Vol.14(特集)
BE-FE融合要素を用いた微小空隙を含む2次元媒質の静弾性解析
後藤 浩之佐藤 芳樹澤田 純男高橋 良和
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67 巻 (2011) 2 号 p. I_153-I_159

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Real composite materials such as concrete, mortar, etc. sometimes contain unintended voids in itself. The voids govern the macro brittle behavior due to the micro cracks. We propose a special element containing a micro void, namely BE-FE blending element. The displacement inside the element is represented by a superposition of the accurate solution from boundary element method and the continuous shape functions. The stiffness matrix implicitly accounts for the the effects from the void, and is applied to the stiffness matrix of conventional finite element method. The accracy of the stress fields is gurannteed when the void size is less than 10% of the element size. We exhibits the applicabliity to the deformation analysis for the extention of elastic plate with a single void, multiple voids and also a inclusion.

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© 2011 公益社団法人 土木学会
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