File(s) not publicly available

Mode III fracture analysis by Trefftz boundary element method

journal contribution
posted on 06.12.2017, 00:00 by Y Cui, J Wang, Manicka Dhanasekar, Q Qin
This paper presents a hybrid Trefftz (HT) boundary element method (BEM) by using two indirect techniques for mode III fracture problems. Two Trefftz complete functions of Laplace equation for normal elements and a special purpose Trefftz function for crack elements are proposed in deriving the Galerkin and the collocation techniques of HT BEM. Then two auxiliary functions are introduced to improve the accuracy of the displacement field near the crack tips, and stress intensity factor (SIF) is evaluated by local crack elements as well. Furthermore, numerical examples are given, including comparisons of the present results with the analytical solution and the other numerical methods, to demonstrate the efficiency for different boundary conditions and to illustrate the convergence influenced by several parameters. It shows that HT BEM by using the Galerkin and the collocation techniques is effective for mode III fracture problems.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

23

Issue

2

Start Page

176

End Page

181

Number of Pages

6

ISSN

0567-7718

Location

Berlin

Publisher

Springer-Verlag

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Centre for Railway Engineering; Dept. of Engineering; Tianjin da xue;

Era Eligible

Yes

Journal

Acta Mechanica Sinica.

Exports

CQUniversity

Exports