The mechanics of spall fracture in rock and concrete
The mechanics of spall fracture in rock and concrete
复制标题
DOI：
10.1080/13855140600874005
复制
发表时间：
2006-09
期刊：
影响因子：
--
通讯作者：
H. Rossmanith;K. Uenishi
中科院分区：
文献类型：
--
作者：
H. Rossmanith;K. Uenishi
层裂是一种由波浪引起的动态断裂现象。波可以是弹性波、弹塑性波或冲击波。从连续介质力学的观点来看，断裂力学和波的传播是层裂形成的主要因素。然而，最近，微结构效应已成为重要的层裂形成的初始阶段，在各种工程材料，从金属到岩石和混凝土。从结构地质学的观点来看，岩体不能被模拟为连续体。在这种情况下，必须采用不连续体方法，其中需要考虑岩体的个体特征，如节理和断层。从应用的角度来看，在发生爆炸、冲击或能量沉积的快速加载时，剥落很重要。应用范围从采矿工程中的爆破到爆炸激发下的结构损伤预防。这一贡献提供了一个多方面和多学科...
Spalling is a wave-induced dynamic fracture phenomenon. The waves can be either one: elastic, elasto-plastic, or shock waves. From a continuum mechanics point of view, fracture mechanics and wave propagation form the main ingredients in the formation of spalls. Recently, however, micro-structural effects have become important in the initial stages of spall formation in a variety of engineering materials ranging from metals to rock and concrete. From a structural geology point of view, the rock mass cannot be modelled as a continuum. In this case, a discontinuum approach has to be taken where the individual features of the rock mass such as joints and faults need to be taken into account. From an application point of view, spallation is important where rapid loading by explosives, impact, or energy deposition, occurs. The range of applications stretches from blasting in mining engineering to damage prevention to structures under explosive excitation. This contribution offers a multi-faceted and multi-disci...