| 1. | The evolutional law of damage value as a function of stress was obtained
分别得出损伤变量随应力和应变而变化的演变规律。 |
| 2. | 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 |
| 3. | The critical damage value is not related to the nodularity , which is about 0 . 06 ~ 0 . 068 under the present test condition
临界损伤变量与球化率的关系不大，在文中试验条件下约为0 . 06 ~ 0 . 068 。 |
| 4. | 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。 |
| 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 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。 |
| 7. | ( 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。 |
| 8. | The law of cumulative damage and its evolution equation of concrete under uniaxial tension with constant amplitude is established , and the validity of which is verified by the test results of variable amplitude loading
定义了损伤变量，得到了损伤积累和演化规律。建立了疲劳损伤模型，并用变幅疲劳试验结果验证了模型的有效性。 |
| 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。 |
