摘要
分析了含裂纹损伤的有限加筋板边界效应对裂纹尖端应力强度因子的影响,得到裂纹尖端应力强度因子随结构尺寸及边界条件的变化规律。结果表明,随着有限加筋板高宽比和筋、板相对刚度的增大,结构应力强度因子的下降幅度逐渐增大。当裂纹尖端离筋条越近时,这种现象越明显。
The stress intensity factors of a finite centrally cracked stiffened plate under various boundary conditions were studied. A discrete stiffened plate model was constructed for investigation. Based on the complex function method, and after considering the condition of compatibility of displacement between the cracked plate and the stiffener, the final solution was obtained. Case studies were presented to illustrate the influence of geometric parameters and material parameters on the stress intensity factor at the crack tip. The numerical results show that the stress intensity factors decrease considerably with the increas- ing of relative stiffness between the stiffener and the cracked plate when the height-width ratio of the structures increases.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2006年第7期75-77,89,共4页
Journal of Wuhan University of Technology
基金
中国船舶重工集团应用基础基金(J40-3-4)
关键词
有限加筋板
裂纹
高宽比
应力强度因子
finite stiffened plate
crack
height-width ratio
stress intensity factor
