多层土粘弹性边界的二维斜入射SH波时域输入

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英文篇名：A method of inclined-incidence SH waves input on viscous-spring boundary in multilayered soil 中文刊名：山西建筑 英文刊名：Shanxi Architecture 作者：陈维 英文作者：CHEN Wei 中文关键词：SH波斜入射 ; 粘弹性人工边界 ; 显式有限元法 英文关键词：inclined-incident SH wave ; viscous-spring artificial boundary ; explicit finite element method 出版日期：2007-09-01 机构：北京工业大学, 年：2007 期：25 出版单位：山西建筑

摘要

采用不同人工边界区分区确定人工边界非外行波场,然后根据波动传播特点、应力状态及其自由地表反射规律和应力状态变换在时域下解析计算边界荷载,算例表明,斜入射输入技术简单、高效且模拟精度高。
The explicit element method with conditional stability is further proposed and applied in the explicit dynamic analysis program ANSYS/LS-DYNA.Because artificial boundary condition can only simulate the waves transmitting artificial boundary into infinite foundation,the seismic wave input technology of separating wave field based on the characteristic on different boundary surfaces under earthquakes is proposed.The time histories of seismic load on boundary nodes are calculated by the waves transmitting from the infinite foundation before analysis.The analysis of examples with analytic solution indicates that the proposed method is effective.

引文

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