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对称拉压循环下金属屈服硬化的各向异性与细观变形转动的不均匀性
  • 期刊名称:Jinshu Xuebao/acta Metallurgica Sinica
  • 时间:2011.10.10
  • 页码:1292-1300
  • 分类:O346.1[理学—固体力学;理学—力学] TB340.1[一般工业技术—材料科学与工程]
  • 作者机构:[1]College of Mathematics and Information Science, Guangxi University Nanning 530004, P. R. China, [2]Key Laboratory of Disaster Prevention and Structural Safety, Guangxi University, Nanning 530004, P. R. China
  • 相关基金:Project supported by the National Natural Science Foundation of China (No. 90815001), the Natu- ral Science Foundation of Guangxi Province of China (No. 2011GXNSFA018132), and the Scientific Research Foundation of Guangxi University (No. XBZ111497)
  • 相关项目:循环加载下金属塑性行为及损伤积累的晶粒尺度研究
中文摘要:

The problem of a mode-II crack close to and perpendicular to an imperfect interface of two bonded dissimilar materials is investigated.The imperfect interface is modelled by a linear spring with the vanishing thickness.The Fourier transform is used to solve the boundary-value problem and to derive a singular integral equation with the Cauchy kernel.The stress intensity factors near the left and right crack tips are evaluated by numerically solving the resulting equation.Several special cases of the mode-II crack problem with an imperfect interface are studied in detail.The effects of the interfacial imperfection on the stress intensity factors for a bimaterial system of aluminum and steel are shown graphically.The obtained observation reveals that the stress intensity factors are dependent on the interface parameters and vary between those with a fully debonded interface and those with a perfect interface.

英文摘要:

The problem of a mode-II crack interface of two bonded dissimilar materials close to and perpendicular to an imperfect is investigated. The imperfect interface is modelled by a linear spring with the vanishing thickness. The Fourier transform is used to solve the boundary-value problem and to derive a singular integral equation with the Cauchy kernel. The stress intensity factors near the left and right crack tips are evaluated by numerically solving the resulting equation. SeverM special cases of the mode-II crack problem with an imperfect interface are studied in detail. The effects of the interfacial imperfection on the stress intensity factors for a bimaterial system of aluminum and steel are shown graphically. The obtained observation reveals that the stress intensity factors are dependent on the interface parameters and vary between those with a fully debonded interface and those with a perfect interface.

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