离散介质波场正演模拟与弱化性影响分析

来源 :应用地球物理(英文版) | 被引量 : 0次 | 上传用户:hdc988
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
从流变力学角度建立的离散介质本构关系同时考虑了介质的弹性、粘性与弱化性,与损伤力学建立的本构关系比较表明弱化因子具有损伤因子的力学意义.本文采用交错网格伪谱法正演模拟了离散介质中波的传播,并以平面波解分析了体波的频散和介质的吸收系数.高频和低频情况下波场数值模拟的结果是:饱和多孔介质中体波速度随弱化因子的增加而降低,介质吸收系数随弱化因子的增加而增加,弱化性对不同体波频散的影响程度不同.
其他文献
Failure criterion of saturated soft clay is studied under cyclic loads through different experiments. A large number of cyclic torsional shear and cyclic triaxi
A system of reaction diffusion equations modeling the predator-prey interaction in an unstirred chemostat is considered. After transforming the model, the globa
By loading nanometer anatase onto exfoliated graphite with the sol-gel method, exfoliated graphite-TiO2 composite (EG-TiO2) can be prepared, which can adsorb oi
One of the main tasks of post-genomic informatics is to systematically investigate all molecules and their interactions within a living cell so as to understand
传统的射束硬化校正方法,通常需要针对每一种材料测量该材料对射线的吸收曲线.由于吸收曲线对实验条件有很大的依赖性,每当改变X光机电压或者被测工件的材料等条件时,需要重新
根据Audi等编评的最新核数据表,对Z≥84,N≥128的核的α衰变实验寿命用Viola-Seaborg公式进行最小方差拟合,得到一套新参数.用新拟合参数计算的偶偶核的衰变寿命与实验寿命很
利用非对称核物质状态方程可以得到有限核112Sn的压强-密度等温线,并对其在坐标和动量空间中的分布进行了模拟,采用了并合模型对形成的核碎片进行了构造.通过碎片的关联分析,
In this paper we investigate cycle base structures of a (weighted) graph and show that much information of short cycles is contained in an MCB (i.e., minimum cy
A process of biosorption of Cu2+, Zn2+ and Cd2+ on Bacillus subtilis was investigated.The experiments show that the process of biosorption is quite fast. The ma
Global asymptotic stability (GAS) is discussed for cellular neural networks (CNN) with multiple time delays. Several criteria are proposed to ascertain the uniq