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    題名: Dynamic fracture analysis of finite cracks by horizontally polarized shear waves in anisotropic solids
    作者: Ing, Yi-Shyong;Ma Chien-Ching
    貢獻者: 淡江大學航空太空工程學系
    關鍵詞: Anisotropy;Crack propagation;Diffraction;Fracture mechanics;Fracture toughness;Laplace transforms;Shear waves;Stress analysis;Anisotropic materials;Transient waves;Cracks
    日期: 2003-01
    上傳時間: 2013-03-20 16:23:30 (UTC+8)
    出版者: Kidlington: Pergamon
    摘要: In this study, the dynamic fracture analysis of 'nite cracks in anisotropic elastic solids subjected
    to incident horizontally polarized shear waves is investigated.The in2uence of 'nite length
    of the crack on the dynamic stress intensity factor will be discussed in detail.A linear coordinate
    transformation is introduced to simplify the problem.The linear coordinate transformation
    reduces the anisotropic 'nite crack problem to an equivalent isotropic problem.An alternative
    methodology di5erent from the conventional superposition method is developed to construct the
    di5racted 'elds.The transient solutions are determined by superposition of two proposed fundamental
    solutions in the Laplace transform domain.For stationary cracks, the exact analytical
    solutions of dynamic stress intensity factors for two crack tips are obtained in explicit forms
    and have accounted for the contributions of all the di5racted waves.For a step-stress wave, the
    maximum dynamic overshot of stress intensity factor is 4= for any combination of material
    constants and incident angles.If the stress intensity factor reaches the fracture toughness of the
    material, the two crack tips are assumed to propagate along the crack tip line with constant
    subsonic velocities.The in2uence of the di5racted waves generated from the other crack tip on
    the propagating crack tip is analyzed.It is shown in this study that the di5racted waves from the
    other crack tip have signi'cant in2uence on the stress intensity factors for propagating cracks.
    關聯: Journal of the Mechanics and Physics of Solids 51(11-12), pp.1987-2021
    DOI: 10.1016/j.jmps.2003.09.009
    顯示於類別:[航空太空工程學系暨研究所] 期刊論文

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