摘要
为了便于工程应用,利用损伤变量定义,确定既真实反映力学作用过程,又易于获取和进行客观度量损伤变量的一种方法。通过提出的相对损伤概念,用相对损伤变量表示含损伤材料在载荷作用下损伤扩展程度和不同部位的相对损伤程度,使衡量受力作用程度的损伤变量确定更易实现。同时,提出了一种基于裂纹扩展的损伤累积计算方法,并用实例计算说明了其合理可行。
Using definition of damage variable, a method for engineering application is put forward; and it not only reflects real mechanical course, but also obtains and measures its value readily and objectively. The definition of relative damage is brought out. The degree of damage expansion and relative damage of different parts when the damage material under blasting action could be expressed with it, and the determination of damage variable which measures the degree of loading is easier. At the same time, based on crack expansion, a computation method of damage cumulation is suggested.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2006年第6期961-964,共4页
Rock and Soil Mechanics
关键词
爆破作用
损伤变量
相对损伤
损伤累积计算
blasting action
damage variable
relative damage
computation of damage cumulation
