Comparison between a multiple scattering method and direct numerical simulations for elastic wave propagation in concrete
Comparison between a multiple scattering method and direct numerical simulations for elastic wave propagation in concrete
复制标题
混凝土中弹性波传播的多重散射法与直接数值模拟的比较
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
O. Abraham
中科院分区：
文献类型：
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作者：
M. Chekroun;L. Marrec;B. Lombard;J. Piraux;O. Abraham
数值模拟研究了弹性波在二维随机非均匀介质（如混凝土）中的传播。为了减少虚假的数值伪影到可以忽略的水平，四阶时域数值方案和浸没界面方法一起使用。提取等效均匀介质的有效特性，并与多次散射法（伊萨）的预测进行比较，以评估后者的有效性。
Numerical simulations are performed to study the propagation of elastic waves in a 2-D random heterogeneous medium such as concrete. To reduce spurious numerical artefacts to a negligible level, a fourth-order time-domain numerical scheme and an immersed interface method are used together. Effective properties of the equivalent homogeneous medium are extracted and compared to the predictions of a multiple scattering method (ISA), to evaluate the validity of this latter.