A new boundary integral method for investigating the roughness scaling law of heterogeneous interfacial fracture

IF 4.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY Engineering Analysis with Boundary Elements Pub Date : 2025-01-22 DOI:10.1016/j.enganabound.2025.106131

Wei Du, Xiaohua Zhao, Wei Jiang, Yongcheng Guo, Jinping Fu, Zhen Wang

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Abstract

A new semi-analytical and semi-numerical approach is proposed to investigate the scaling law of in-plane roughness due to the fracture of a heterogeneous interface involving spatial correlation of disorders. The model is considered as a composite structure composed of two cantilever rectangular plates bonded with an interfacial layer. Based on the theory of solid mechanics, the dynamic process of interfacial fracture is derived analytically and reduced to two coupled integral equations, which further become a system of linear algebraic equations after discretizing the interface to a set of prismatic elements. Numerical simulations present that the morphology of interfacial fracture fronts in all cases show self-affine scaling properties with the roughness exponent in the range (0.36,0.70), depending on stiffness ratio of laminate structure and heterogeneous properties of interface. Remarkably, the present results cover most of the exponent values observed in previous experiments and provides strong evidence that it is the microstructure and heterogeneous properties that mainly control the roughness.

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来源期刊

Engineering Analysis with Boundary Elements 工程技术-工程：综合

CiteScore

5.50

自引率

18.20%

发文量

368

审稿时长

56 days

期刊介绍： This journal is specifically dedicated to the dissemination of the latest developments of new engineering analysis techniques using boundary elements and other mesh reduction methods. Boundary element (BEM) and mesh reduction methods (MRM) are very active areas of research with the techniques being applied to solve increasingly complex problems. The journal stresses the importance of these applications as well as their computational aspects, reliability and robustness. The main criteria for publication will be the originality of the work being reported, its potential usefulness and applications of the methods to new fields. In addition to regular issues, the journal publishes a series of special issues dealing with specific areas of current research. The journal has, for many years, provided a channel of communication between academics and industrial researchers working in mesh reduction methods Fields Covered: • Boundary Element Methods (BEM) • Mesh Reduction Methods (MRM) • Meshless Methods • Integral Equations • Applications of BEM/MRM in Engineering • Numerical Methods related to BEM/MRM • Computational Techniques • Combination of Different Methods • Advanced Formulations.