The Dynamic Response of Circular Lining Structure and Multiple Cracks in Half Space under Impact Loading

扫码查看

原文链接

NETL
NSTL

外文摘要：The dynamic response of a circular lining structure and multiple cracks in an elastic half space while bearing impact loading is studied in this paper. This problem can be seen as the problem of defending of blast. The methods of Green's function, complex function and multi-polar coordinates are used here. First, the scattering wave which satisfies the condition of stress free on the ground surface of half-space containing a shallow-embedded circular lining structure impacted by incident SH-wave is constructed based on the symmetry of SH-wave scattering and the method of multi-polar coordinates system. Then a crack or multiple cracks in any position and direction can be constructed by Green's function and means of crack-division in half space. Finally the displacement field and stress field are established in the case of coexistence of circular lining structure and cracks, and the expression of dynamic stress intensity factor (DSIF) at the tip of crack is given. The interaction of inclusion and two cracks is chosen as numerical examples finally. According to numerical examples, the influences of different parameters on DSIF are discussed.

外文关键词：

scattering of SH wavemultiple crackscircular lining structuregreen's functiondynamic stress intensity factor

作者：

Zailin Yang、Meijuan Xu、Baitao Sun

展开 >

作者单位：

College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, 150001, China Institute of Engineering Mechanics, China Earthquake Administration, Harbin, 150080, China

College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, 150001, China

Institute of Engineering Mechanics, China Earthquake Administration, Harbin, 150080, China

出版年：

2010

Key engineering materials

ISSN：1013-9826

年,卷(期)：2010.417/418