【作者】 姜翠香； 赵耀； 刘土光；

【Author】 JIANG Cui-xiang;ZHA0 Yao;LIU Tu-Guang Traffic science & engineering college, Huazhong University of Science & Technology

【机构】 华中科技大学交通科学与工程学院；

【摘要】 基于复应力函数的解法,对含裂纹部分加筋板在拉伸载荷作用下的应力强度因子进行了分析计算。考虑了部分筋条的长度、位置以及筋条与板的相对刚度对加筋板裂纹尖端应力强度因子的影响,并基于这些结果对结构的止裂性能进行了分析。计算结果表明:对于给定的裂纹长度,随着筋条长度的增加,筋条对裂纹板的加强作用普遍提高,当筋条的长度增加到一定程度时,继续增加筋条长度对应力强度因子影响不大;提高筋条对板的相对刚度,能有效降低结构应力强度因子,提高结构的止裂能力。更多还原

【Abstract】 The stress intensity factor at the crack tip is studied for a partially stiffened cracked plate under tensionby using complex variable approach to the plane-stress problem of elasticity. The stringer is assumed to becontinuously attached to a plate along a line perpendicular to a finite crack. It is assumed that the stringer haszero bending stiffness. The tangential traction on the cracked plate along the stringer is convened into thetension body force of the stringer. The tangential traction is approximately expressed by a discretization.Case studies are presented to illustrate the effectiveness of the method. Parametric studies involving thestringer location, stringer length and the relatively stiffness between stringer and plate are reported.更多还原