【摘要】 本文分析了各向同性/正交各向异性双层板条的裂纹问题,由Fourier积分变换和问题的边界条件获得了一对奇异积分方程,确定了內部裂纹、边缘裂纹、到达和穿过界面裂纹的裂端及界面上的应力奇异性,利用Gauss-Jacobi和Gauss-Chebyshev积分公式求解奇异积分方程,得到了裂端和界面上的应力强度因子,并讨论了裂纹趋近于界面时进一步扩展的可能方式。更多还原

【Abstract】 Crack problems for isotropic/orthotropic two-layered strips have been investigated. A system of two singular integral equations can be derived by using Fourier integral transformation and boundary conditions of crack problems. Stress singularities at crack tips or other special points are determined for internal and edge cracks, and for crack terminating at and going through the interface. Then the system of singular integral equations is solved numerically by Gauss-Jacobi or Gauss-Chebyshev integration formu-lar for stress intensity factors ait the tips and other singular points of cracks. Finally, possible crack growth path for crack approaching the interface is discussed.更多还原