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《Journal of Hydraulic Engineering》 1990-06
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Dynamic simulation of infinite foundations——A summary of finite and infinite coupling system

Zhao Chongbin (Shaanxi Institute of Mechanical Engineering)Zhang Chuhan Zhang Guangdou(Tsinghua Univerity)  
In this paper, a dynamic coupling model of finite and infinite elements for simulating infinite foundations is summarized. Through the derivation of basic formula and verification of computational accuracy of wave propagation in a 3-D infinite foundation, advantages of the presented model can be summarized as follows: (1)By using the finite elements to discre-tize the near field foundation and using the infinite elements to evaluate the far field effects, this model is suitable for simulating multiple layers and complicated foundation. ( 2 )The use of infinite elements for modelling wave radiation eliminates the effects of artificial reflection of waves from finite element boundary, therefore the computational accuracy can be assured. Meanwhile, the spatial range of finite element discretization is significantly reduced and computational economy can be achieved. (3) Using the mapping technique, simulation of different wave numbers can be realized by changing the global coordinates of middle nodes of elements, therefore the displacement compatibility on common boundary of infinite elements can be retained.
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【Co-citations】
Chinese Journal Full-text Database 2 Hits
1 ZHANG Zhiguo,XIAO Ming,ZHANG Yuting,ZUO Shuangying (State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan,Hubei 430072,China);DYNAMIC FINITE ELEMENT ANALYSIS OF LARGE-SCALE COMPLEX UNDERGROUND CAVERNS WITH THREE-DIMENSIONAL ELASTOPLASTIC DAMAGE MODEL[J];Chinese Journal of Rock Mechanics and Engineering;2010-05
2 HUANG Sheng 1,CHEN Weizhong 1,WU Guojun 1,GUO Xiaohong 2,QIAO Chunjiang 2(1.State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071,China;2.Second Highway Consultants Co.,Ltd.,China Communications Construction Co.,Wuhan,Hubei 430056,China);STUDY OF METHOD OF EARTHQUKAE INPUT IN ASEISMIC ANALYSIS FOR UNDERGROUND ENGINEERING[J];Chinese Journal of Rock Mechanics and Engineering;2010-06
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