多孔板强度的标度行为  

SCALING CHARACTERISTICS IN THE STRENGTH OF POROUS PLATES

作　　者：傅苒 龙起易[1,2] 龙期威[1,2] 

机构地区：[1]中国科学院金属研究所,沈阳110015 [2]中国科学院国际材料物理中心

出　　处：《材料科学进展》1991年第4期326-330,共5页

摘　　要：测量了经过随机打孔的有机玻璃板、钢板及铝板在渗流阈值附近的杨氏模量、屈服强度、断裂强度及断裂功。结果表明,杨氏模量、屈服强度和断裂强度均服从幂律。一般认为,渗流网络的弹性模量主要由扭转力决定,而我们的讨论表明,拉伸力和扭转力共同决定了系统的弹性模量。实验确定的模量指数、屈服指数、断裂指数及分形维数都处于理论界定的范围之内。We performed the measurements of the bulk modulus E,yield strength S_y,fracture strength S and fracture work W in randomly punched plates of plexiglass,steeland aluminium.A power law relation is observed for E,S_y,and S near the percolationthreshold and the determined exponents of our samples appear to be considerably lowerthan the theoretical determinations for a bond-bending force system,and hence,thebond-stretching nature of the samples is taken into account to interpret the difference.

关 键 词：孔板 强度 渗流 弹性 断裂 

分 类 号：TG113.25[金属学及工艺—物理冶金]