考虑裂纹面接触及摩擦的应力强度因子研究  

The investigations of stress intensity factor taking crack surfaces with contact and friction into account

作　　者：盖秉政[1] 王立清[1] 

机构地区：[1]哈尔滨工业大学航天科学与力学系,哈尔滨150001

出　　处：《黑龙江大学自然科学学报》2008年第6期731-749,共19页Journal of Natural Science of Heilongjiang University

基　　金：国家自然科学基金资助项目(10272036)

摘　　要：采用有限元方法(FEM)研究了裂纹面接触及摩擦的静、动态强度因子问题。研究结果表明:(1)随着摩擦系数的增加,裂纹面开口和滑动位移减小;(2)随着摩擦系数的增加,裂纹面接触区域增加;(3)随着摩擦系数的增加,静态KII显著减小;动态KII也减小,但不如静态时显著。The finite element method （FEM） was employed in the investigation on the static and dynamic stress intensity factors of crack surfaces with Contact and friction in this paper. With increasing friction, it is observed that the normal gaps and tangential shifts decrease and that the values of stress intensity factor decrease while the size of contact zone increases.

关 键 词：裂纹 强度因子 接触及摩擦 有限元方法 

分 类 号：O39[理学—工程力学]