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A Method for Numerical Analysis of Wave Propagation in an Elastic Half Space

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 28 Issue 2 Page 181-188
published_at 1978
KJ00000156197.pdf
[fulltext] 585 KB
Title
半無限領域での波動伝播数値解析のための一つの方法
A Method for Numerical Analysis of Wave Propagation in an Elastic Half Space
Creators Nakagawa Koji
Creators Kudo Yozo
Source Identifiers
The analytical studies of blast effects and earthquake, mechanical or traffic foundation vibrations are to consider them as wave propagation problems in an infinite solid. When the geometrical complications as structures on the foundation or openings are included, it is not possible to find closed form solutions and, therefore, only the numerical solutions are available. As a numerical method, finite element or finite difference method is useful. With these methods, only a finite number of nodal points can be considered, the numerical method can not be used the direct approximation of the infinite region. One of the methods through which an infinite system may be approximated by a finite system is to use a viscous boundary condition. In this study it was considered that a continuous state is between the free and the fixed conditions. So the infinite region was approximated as the average of a finite system with free boundary condition and a system with fixed boundary condition. The numerical results showed that the method of superposition is excellent in one dimensional problems and not so good in two dimensional problems.
Subjects
土木工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1978
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部