摘要
脆性材料在冲击载荷下的损伤模型在爆炸模拟、侵彻、高速碰撞等高加载率问题中有着重要应用，然而，用于描述脆性材料在冲击载荷作用下损伤模型的研究却困难重重。困难来自于两个方面：一是脆性材料在冲击载荷下响应的复杂性：二是模拟试验及监测难度较大。对冲击载荷下脆性材料损伤模型近20a来的研究现状和方法进行了总结，讨论所存在的问题及其发展趋势。损伤变量直接决定了所建立损伤模型的层次（宏观、细观、微观）及模型的基本方法，因而，通过损伤变量的不同，对现有的描述脆性材料对冲击载荷力学响应的损伤模型进行分类，并论述了脆性材料在冲击载荷下的损伤理论模型的发展趋势。
The damage model of brittle materials under impact load is very important for study of blast, penetration, and collision with high velocity. However, there are many difficulties in such study, which come from two aspects as follows： （1） the complexity of response of brittle materials under impact load; and （2） the difficulty to carry on simulating test and measuring method. Therefore, the research situation and methods of damage model for brittle materials under impact load have been summarized since recent 20 years, and the tendency and existed problems have also been discussed. The variables of damage model directly determine the level （macro-, meso-, and microcosmic level） and the basic method. Accordingly, the current damage models that describe the mechanical response of brittle materials under impact load are classified according to different damage variables, and the developing tendency are also commented.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第A01期4811-4817,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
材料力学
冲击载荷
脆性材料
损伤模型
mechanics of materials
impact load
brittle materials
damage model
