| 1. | Study on triaxial meso - failure mechanism and damage variables of sandstone under chemical erosion
化学腐蚀下砂岩三轴细观损伤机理及损伤变量分析 |
| 2. | A calculating parameter by way of using the damage variable d2 on intensity and life at crack growth stage
2作为裂纹扩展阶段强度与寿命的计算参量 |
| 3. | First , the developments of damage variables are studied , and the new definition of damage and the technical routes to study are presented
首先研究了损伤变量的发展变化历程，提出了损伤的新概念与研究损伤的技术路线。 |
| 4. | ( 2 ) the tests on the fatigue behavior of concrete under uniaxial tension with variable - amplitude fatigue loading were carried out . the damage variable is defined
( 2 )进行了混凝土单轴轴拉变幅疲劳性能试验。探讨了变幅疲劳残余应变的规律与特点。 |
| 5. | Introducing the time - dependent damage variable into the constitutive equations of the crack zone , we modified the dugdale model of crack damage zone around crack - tip
对裂尖银纹损伤区的dugdale模型进行了修正，将时间、位置、应变相关的损伤变量引入到银纹区的本构方程中。 |
| 6. | Based on the results mentioned above , the author modified the model , aiming at the shortage of the model . the modified model introducing damage variable takes soil ' s structure into account
本文结合室内试验结果，引入损伤的概念，考虑土的结构性，对邓肯?张模型进行了修正。 |
| 7. | Based on test result of load - deformation hysteresis curve under cyclic load , fatigue damage variable is defined from energy angle , the change rule of fatigue damage is pointed out
通过对循环加载下裂隙试样滞回特性和滞回能试验结果的分析，从能量的角度定义了损伤变量，并指出了疲劳损伤的发展规律。 |
| 8. | ( 7 ) basing on defining damage variable with flaws in rock , this paper uses linear viscoelasticity fracture mechanics to set up a damage reep model and analyses the model
( 7 )在用岩石中大小、方位和位置均为随机分布的裂纹定义损伤变量基础上，利用线粘弹性断裂力学原理对考虑裂纹内水压的岩石的损伤蠕变问题进行了建模和分析。 |
| 9. | Formation of damage variable critical dc is given by . this dissertation , dc increasing with the increase of n , that is to say , the damage critical of tough materials is greater than that of brittle materials
文中给出了损伤变量临界值d _ c的表达式，随着n的增加， d _ c增加，即对于韧性材料，它的临界损伤值要大于脆性材料的临界损伤。 |
| 10. | According to fractal propagation characteristics of fatigue crack , it defines structure fatigue fractal damage variables and sets up the structure fatigue damage fractal evolution mode which macro and micro are consistent
采用分形维数定义了结构疲劳分形损伤变量，根据疲劳裂纹的分形扩展特点，建立了宏细观统一的结构疲劳损伤分形演化模型。 |
