整体加筋壁板中三维裂纹扩展过程模拟  

Simulation of 3-D Crack Propagation in the Integrally Stiffened Panel

作　　者：李秦[1] 王生楠[1] 

机构地区：[1]西北工业大学航空学院,陕西西安710072

出　　处：《航空计算技术》2009年第3期74-76,82,共4页Aeronautical Computing Technique

摘　　要：基于有限元法和线弹性断裂力学理论,使用通用商业软件ABAQUS模拟了三维裂纹在飞机整体加筋板结构中的扩展过程,考察了一种典型的开裂模式,提出了一种对三维裂纹问题边界效应的修正方法,重点分析了裂纹在结构倒角附近区域的扩展规律。The process of 3 - D crack propagation in the integrally stiffened panel is simulated by general commercial software ABAQUS based on the linear elastic fracture mechanics and finite element analysis. Focus on the crack propagation around the chamfer. A typical crack opening situation is investigated, and a method of boundary effect correction is applied.

关 键 词：整体加筋板 三维裂纹扩展 边界层效应 

分 类 号：O242.21[理学—计算数学]