SCATTERING OF SH-WAVES BY INCLUSION EMBEDDED IN INHOMOGENEOUS MEDIUM
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- 英文论文题名：SCATTERING OF SH-WAVES BY INCLUSION EMBEDDED IN INHOMOGENEOUS MEDIUM
- 论文作者：Zai-lin YANG ; Yu ZHANG ; Guan-xixi JIANG
- 英文论文作者：Zai-lin YANG ; Yu ZHANG ; Guan-xixi JIANG ; College of Aerospace and Civil Engineering ; Harbin Engineering University
- 年：2016
- 作者机构：College of Aerospace and Civil Engineering, Harbin Engineering University;
- 英文论文关键词：Homogeneous half-space ; Inhomogeneous medium ; Dynamic stress concentration factor(DSCF)
- 会议召开时间：2016-10-21
- 会议录名称：2016年全国压电和声波理论及器件应用研讨会论文摘要集
- 英文会议录名称：Abstract Book of 2016 Symposium on Piezoelectricity, Acoustic Waves and Device Applications
- 语种：英文
- 分类号：O343.4
- 学会代码：AGLU
- 会议名称：2016年全国压电和声波理论及器件应用研讨会
- 会议地点：中国陕西西安
- 主办单位：中国力学学会、中国声学学会、IEEE UFFC分会
- 学会名称：中国力学学会
- 页数：1
- 文件大小：88k
- 原文格式：D
- 会议级别：全国
摘要
Background, Motivation and Objective The scattering problems in elastic medium by inclusions or cracks are common in the civil engineering structures, building materials and geologic structures. Scattering by inclusions or cracks in homogeneous isotropic half-space and inhomogeneous medium is practical and significant in engineering. Therefore, dynamic stress concentration should be considered in both homogeneous and inhomogeneous medium when defects exist. Statement of Contribution/Methods Based on the complex function method and the multi-polar coordinate method, the scattering problems of SH-waves by inclusion and crack are analyzed and discussed in the present paper for the cases in both homogeneous half-space and inhomogeneous medium. The homogeneous half-space's surface is considered and the conformal mapping technique is applied to transform the Helmholtz equation with variable coefficients to the general formulation for the inhomogeneous medium. Then, some examples are calculated and discussed for both homogeneous and inhomogeneous medium. Results The results are obtained by calculating and analyzing some examples in this paper. The position of the inclusion and crack can influence DSCF in the homogeneous half-space. Then, the inhomogeneous parameter of the inhomogeneous medium can affect DSCF in the inhomogeneous medium. Discussion and Conclusions The DSCF in the homogeneous half-space is affected by the position of the inclusion. The DSCF in the inhomogeneous medium is mainly influenced by the inhomogeneous parameter of inhomogeneous medium. Then, the DSCF changes with the wave numbers in both homogeneous and inhomogeneous problem. The achievements in this paper are useful and significant in many scientific and engineering fields.
Background, Motivation and Objective The scattering problems in elastic medium by inclusions or cracks are common in the civil engineering structures, building materials and geologic structures. Scattering by inclusions or cracks in homogeneous isotropic half-space and inhomogeneous medium is practical and significant in engineering. Therefore, dynamic stress concentration should be considered in both homogeneous and inhomogeneous medium when defects exist. Statement of Contribution/Methods Based on the complex function method and the multi-polar coordinate method, the scattering problems of SH-waves by inclusion and crack are analyzed and discussed in the present paper for the cases in both homogeneous half-space and inhomogeneous medium. The homogeneous half-space's surface is considered and the conformal mapping technique is applied to transform the Helmholtz equation with variable coefficients to the general formulation for the inhomogeneous medium. Then, some examples are calculated and discussed for both homogeneous and inhomogeneous medium. Results The results are obtained by calculating and analyzing some examples in this paper. The position of the inclusion and crack can influence DSCF in the homogeneous half-space. Then, the inhomogeneous parameter of the inhomogeneous medium can affect DSCF in the inhomogeneous medium. Discussion and Conclusions The DSCF in the homogeneous half-space is affected by the position of the inclusion. The DSCF in the inhomogeneous medium is mainly influenced by the inhomogeneous parameter of inhomogeneous medium. Then, the DSCF changes with the wave numbers in both homogeneous and inhomogeneous problem. The achievements in this paper are useful and significant in many scientific and engineering fields.
Background, Motivation and Objective The scattering problems in elastic medium by inclusions or cracks are common in the civil engineering structures, building materials and geologic structures. Scattering by inclusions or cracks in homogeneous isotropic half-space and inhomogeneous medium is practical and significant in engineering. Therefore, dynamic stress concentration should be considered in both homogeneous and inhomogeneous medium when defects exist. Statement of Contribution/Methods Based on the complex function method and the multi-polar coordinate method, the scattering problems of SH-waves by inclusion and crack are analyzed and discussed in the present paper for the cases in both homogeneous half-space and inhomogeneous medium. The homogeneous half-space's surface is considered and the conformal mapping technique is applied to transform the Helmholtz equation with variable coefficients to the general formulation for the inhomogeneous medium. Then, some examples are calculated and discussed for both homogeneous and inhomogeneous medium. Results The results are obtained by calculating and analyzing some examples in this paper. The position of the inclusion and crack can influence DSCF in the homogeneous half-space. Then, the inhomogeneous parameter of the inhomogeneous medium can affect DSCF in the inhomogeneous medium. Discussion and Conclusions The DSCF in the homogeneous half-space is affected by the position of the inclusion. The DSCF in the inhomogeneous medium is mainly influenced by the inhomogeneous parameter of inhomogeneous medium. Then, the DSCF changes with the wave numbers in both homogeneous and inhomogeneous problem. The achievements in this paper are useful and significant in many scientific and engineering fields.
引文