A dual boundary element method formulation for elastoplastic fracture mechanics of shear deformable plate is reported in this work. The formulation can be viewed as an extension to the two-dimensional problem. The boundaries of crack surfaces are modeled using discontinuous elements of quadratic elements to fulfill the continuity requirements of displacements and tractions at collocation points for displacement and traction integral equations. Rectangular element of 9-nodes quadrilateral is used to discretize the domain. Semi-discontinuous rectangular elements are placed along the boundary including the crack surfaces in order to force the cell nodes to be internal points. Two examples are presented. The first example isa centre-cracked plate subjected to tensile, bending and combined of the two loads. The second example is rectangular plate with double edge symmetric cracks subjected to combined tensile and bending load. J-type integrals are calculated.

这项工作报道了一种用于剪切变形板弹塑性断裂力学的双边界元方法公式。该表述可以看作是二维问题的扩展。使用二次元的不连续元素对裂纹表面的边界进行建模，以满足位移和牵引力积分方程在并置点处位移和牵引力的连续性要求。9节点四边形的矩形元素用于离散域。沿着包括裂缝表面的边界放置半不连续的矩形元素，以迫使单元节点成为内部点。给出两个例子。第一个例子是一个中心开裂的板，受到拉力，弯曲和两个载荷的共同作用。计算出J型积分。