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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：固体力学. 工程力学. 计算力学
办公地点：海宇楼506
联系方式：Email：zhouzh@dlut.edu.cn
电子邮箱：zhouzh@dlut.edu.cn
Evaluation of electroelastic singularity of finite-size V-notched one-dimensional hexagonal quasicrystalline bimaterials with piezoelectric effect
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论文类型：期刊论文
发表时间：2019-04-01
发表刊物：THEORETICAL AND APPLIED FRACTURE MECHANICS
收录刊物：SCIE、EI、Scopus
卷号：100
页面范围：139-153
ISSN号：0167-8442
关键字：Piezoelectric quasicrystalline bimaterial; V-shape notch; Intensity coefficient; Singularity order; Hamiltonian system
摘要：The Mode-III interface V-shape notch in a finite-size one-dimensional hexagonal quasicrystalline bimaterial with piezoelectric effect is investigated under the framework of Hamiltonian mechanics. The electroelastic intensity coefficients are extended to evaluate the fracture behaviors of the V-notched piezoelectric quasicrystalline bimaterial. In the symplectic space, the higher-order differential governing equations are simplified into a set of lower-order ordinary differential equations so that exact solutions are expanded in terms of symplectic series. The undetermined coefficients in the series can be obtained by a highly accurate finite element discretized symplectic method. Explicit expressions of the electroelastic fields and corresponding intensity coefficients are achieved simultaneously. In numerical examples, comparisons are presented to validate the accuracy and reliability of the present work. The effects of notch positions on the electroelastic intensity coefficients are studied and discussed in detail.