首页|Modeling wave propagation across rock masses using an enriched 3D numerical manifold method
Modeling wave propagation across rock masses using an enriched 3D numerical manifold method
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The three-dimensional numerical manifold method(3DNMM)method is further enriched to simulate wave propagation across homogeneous/jointed rock masses.For the purpose of minimizing negative effects from artificial boundaries,a viscous non-reflecting boundary,which can effectively absorb the energy of a wave,is firstly adopted to enrich 3DNMM.Then,to simulate the elastic recovery property of an infinite problem domain,a viscoelastic boundary,which is developed from the viscous nonreflecting boundary,is further adopted to enrich 3DNMM.Finally,to eliminate the noise caused by scattered waves,a force input method which can input the incident wave correctly is incorporated into 3DNMM.Five typical numerical tests on P/S-wave propagation across jointed/homogeneous rock masses are conducted to validate the enriched 3DNMM.Numerical results indicate that wave propagation problems within homogeneous and jointed rock masses can be correctly and reliably modeled with the enriched 3DNMM.
3D numerical manifold methodviscous nonreflecting boundaryrock massesforce input methodwave propagation
YANG YongTao、LI JunFeng、WU WenAn
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State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China
University of Chinese Academy of Sciences,Beijing 100049,China
Key Laboratory of Urban Security and Disaster Engineering,Ministry of Education,Beijing University of Technology,Beijing 100124,China