Diffraction of SH-waves by topographic features in a layered transversely isotropic half-space

来源 :Earthquake Engineering and Engineering Vibration | 被引量 : 0次 | 上传用户:koutoumonnokoro
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
The scattering of plane SH-waves by topographic features in a layered transversely isotropic(TI) half-space is investigated by using an indirect boundary element method(IBEM).Firstly, the anti-plane dynamic stiffness matrix of the layered TI half-space is established and the free fields are solved by using the direct stiffness method.Then, Green’s functions are derived for uniformly distributed loads acting on an inclined line in a layered TI half-space and the scattered fields are constructed with the deduced Green’s functions.Finally, the free fields are added to the scattered ones to obtain the global dynamic responses.The method is verified by comparing results with the published isotropic ones.Both the steady-state and transient dynamic responses are evaluated and discussed.Numerical results in the frequency domain show that surface motions for the TI media can be significantly different from those for the isotropic case, which are strongly dependent on the anisotropy property, incident angle and incident frequency.Results in the time domain show that the material anisotropy has important effects on the maximum duration and maximum amplitudes of the time histories. The scattering of plane SH-waves by topographic features in a layered transversely isotropic (TI) half-space is investigated by using an indirect boundary element method (IBEM). Firstly, the anti-plane dynamic stiffness matrix of the layered TI half-space is established and the free fields are solved by using the direct stiffness method. Chen, Green’s functions are derived distributed uniformly acting on an inclined line in a layered TI half-space and the scattered fields are constructed with the deduced Green’s functions. Finally , the free fields are added to the scattered ones to obtain the global dynamic responses. The method is verified by comparing results with the published isotropic ones. Both the steady-state and transient dynamic responses are evaluated and discussed. Numerical results in the frequency domain show that surface motions for the TI media can be significantly different from those for the isotropic case, which are strongly dependent on the anisotropy property, in cident angle and incident frequency. Results in the time domain show that the material anisotropy has important effects on the maximum duration and maximum amplitudes of the time histories.
其他文献
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
鸡西矿业集团公司张辰煤矿西三采区3
本文结合教学案例,阐述了译林版小学《英语》综合板块整合教学的实践与探索,以“基于文本,超越文本”为指导思想,围绕主线话题进行整合与拓展,力图有效提高学生的英语能力和
2014年习近平主席对韩国成功的国事访问,提出让“汉风”劲吹汉江两岸,以春风化雨之势夯实了中韩关系的民意基础,为双方政治、经济、安全等各方面合作注入强心剂,谱写出中韩两
旅行是桑塔格认识自我和他者的重要途径,旅行文学是桑塔格创作的重要组成部分,其旅行叙事和旅行隐喻是构成其旅行创作文本的要素,应该成为学界关注的一个方面。《朝圣》根据
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
沪江法语、极客法语、蜗牛法语、法比加法语、三峡大学等,一些高校及法语教育培训机构走在法语线上教育的前沿,推出了覆盖初、中、高级和出国培训等诸多方面的法语课程。以极
城乡低保是针对最低生活保障制度而对生活困难群众提供的基本生活保障.在城乡低保工作开展过程中,档案是针对低保工作过程的真实记录,直接关系到低保工作的执行效率.因此需要
档案管理工作中最重要的内容为档案信息资源的利用,直接影响档案管理的效率.档案事业飞速发展,为了实现档案资源的高利用率,应建立明确且规范的档案管理标准制度,通过引入现