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A MIXED FE-BE METHOD FOR COUPLED VIBRATION OF GRAVITY DAM-RESERVOIR SYSTEM WITH VARIABLE WATER DEPTH

A MIXED FE-BE METHOD FOR COUPLED VIBRATION OF GRAVITY DAM-RESERVOIR SYSTEM WITH VARIABLE WATER DEPTH
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摘要 To solve the coupled vibration of a gravity dam-reservoir systemwith variable water depth by using a hybrid element method, the fluidregion with variable water depth needs to be dis- cetized by FEmeshes. However, such a method asks for a great computational costowing to the ex- cessive unknowns, especially when the fluid regionwith variable water depth is relatively large. To overcome theshortcoming, a refined boundary element method is proposed to analyzethe fluid field, in which only the discretization for the boundary ofthe variable depth region is required. But as a basis of thisapproach, it is necessary to construct a new Green's functioncorresponding to an infinite strip region. To solve the coupled vibration of a gravity dam-reservoir systemwith variable water depth by using a hybrid element method, the fluidregion with variable water depth needs to be dis- cetized by FEmeshes. However, such a method asks for a great computational costowing to the ex- cessive unknowns, especially when the fluid regionwith variable water depth is relatively large. To overcome theshortcoming, a refined boundary element method is proposed to analyzethe fluid field, in which only the discretization for the boundary ofthe variable depth region is required. But as a basis of thisapproach, it is necessary to construct a new Green's functioncorresponding to an infinite strip region.
出处 《Acta Mechanica Solida Sinica》 SCIE EI 1998年第2期123-132,共10页 固体力学学报(英文版)
基金 the National Key Research Plan of China
关键词 mixed FE-BE method fluid-solid interaction gravity dam mixed FE-BE method fluid-solid interaction gravity dam
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参考文献7

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