摘要
采用子域边界元法对双材料界面边缘裂纹进行了研究,通过对两种材料分别沿材料边界进行单元划分,并利用在结合面上的两种材料的面力和位移的关系,得到边界上的所有未知分量,进而得到裂尖附近的位移场和应力场。应用外推法得到应力强度因子及裂尖周围的应力三维度。
Subregion-BEM is adopted to study the edge cracks on the bimaterial interface. All the unknown variables on the boundary are obtained via the unit divisions of two kinds of materials along the material boundary, and using the relationship of surface force and displacement of materials of two kinds, whereby the displacement field and stress field near the tips of cracks can be obtained. Also, the extrapolation method is used to obtain the SIF and stress triaxiality around the tip cracks.
出处
《西安理工大学学报》
CAS
2005年第2期183-187,共5页
Journal of Xi'an University of Technology
基金
教育部重点项目研究基金资助(02189)
陕西省自然科学基金资助项目(2002A05
