Bimaterial interface crack analysis using an extended consecutive-interpolation quadrilateral element

Thien Tich Truong; Bang Kim Tran; Vay Siu Lo; Nha Thanh Nguyen; Minh Ngoc Nguyen

doi:10.15625/2525-2518/16172

Author affiliations

Authors

Thien Tich Truong Department of Engineering Mechanics, Faculty of Applied Science, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Str., Dist.10, Ho Chi Minh City, Viet Nam https://orcid.org/0000-0002-3371-8890
Bang Kim Tran Department of Engineering Mechanics, Faculty of Applied Science, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Str., Dist.10, Ho Chi Minh City, Viet Nam
Vay Siu Lo Department of Engineering Mechanics, Faculty of Applied Science, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Str., Dist.10, Ho Chi Minh City, Viet Nam
Nha Thanh Nguyen Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Viet Nam
Minh Ngoc Nguyen Duy Tan Research Institute for Computational Engineering (DTRICE), Duy Tan University, 6 Tran Nhat Duat, District 1, Ho Chi Minh City, VietNam

DOI:

https://doi.org/10.15625/2525-2518/16172

Keywords:

bimaterial interface crack, consecutive-interpolation procedure, extended consecutive-interpolation quadrilateral element

Abstract

A very important problem in the research of layer structures is the modeling of cracks on the material interface. Due to the complex physical and mechanical properties of this structure, the simulation of discontinuities such as cracks and material interface by traditional finite element methods requires a very fine mesh density. Furthermore, mesh smoothing requires a really large amount of computational resources. Therefore, the extended algorithm which does not require the remeshing technique was born to solve the crack problems. In this paper, the extended consecutive-interpolation finite element method (XCFEM) is employed to modeling the mix-mode interface cracks between two dissimilar isotropic materials. The XCFEM using 4-node consecutive-interpolation quadrilateral element (XCQ4) provides continuity of nodal gradient due to the concept of “consecutive-interpolation” so that the stress and strain fields derived from XCQ4 is smoother than that obtained by the classical FEM element. The accuracy and effectiveness of the method are demonstrated via various numerical examples and compared with other researches.

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