Abstract
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.
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This work was supported by the Youth Innovation Promotion Association CAS (Grant No. 2020327) and the National Natural Science Foundation of China (Grant Nos. 12202024, 52130905, 12272393, and 12072357).
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Yang, Y., Li, J. & Wu, W. Modeling wave propagation across rock masses using an enriched 3D numerical manifold method. Sci. China Technol. Sci. 67, 835–852 (2024). https://doi.org/10.1007/s11431-023-2517-8
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DOI: https://doi.org/10.1007/s11431-023-2517-8