Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2016-08-01

Journal: COMPUTERS & STRUCTURES

Included Journals: Scopus、EI、SCIE

Volume: 172

Page Number: 1-10

ISSN: 0045-7949

Key Words: Eigen expansion; Composite structure; Weak form; Civil engineering

Abstract: The failure of structures made of multiple materials is often caused by bimaterial interface cracks. Due to the complex nature of the stress field around the interface crack tip, the faithful modeling of such cracks requires numerical methods with high accuracy and stability. For this purpose, an enriched element is proposed in this study. The element's interior fields are described only by using the Williams eigen solutions. The element's stiffness matrices for both plane and antiplane deformations are proven to be independent of its size, and the fracture parameters can be obtained accurately for a wide range of mesh densities. (C) 2016 Elsevier Ltd. All rights reserved.