| 1. | A simplified crack tip brittle fracture model and fracture criterion for mixed mode of loading
简化脆性断裂裂尖模型及复合型断裂判据 |
| 2. | The observation of fracture section displayed the fracture model is transgranular
从断裂面观察看出，材料的断裂模式一般为沿晶断裂。 |
| 3. | Jenq y s , shah s p . two parameter fracture model for concrete j . journal of engineering mechanics , 1985 , 111 ( 10 ) : 1227 - 1241
金南国，金贤玉，郑砚国,等.早龄期混凝土断裂性能和微观结构的试验研究j .浙江大学学报:工学版.待发表 |
| 4. | When the source frequency is low ( lower than 2khz ) and the widths of fractures are approximate , the difference of the snapshots and waveforms between different fracture models is not obvious
6 、当声源主频较低( 2khz )时，若裂缝宽度相差不是很大，波场图和波形图差别不明显。 |
| 5. | Interface failure model and fiber bundle fracture model are formed with the damage mechanics of 3d braided cmc , and a scope of the models application is preliminarily divided
根据三维编织cmc复合材料断裂损伤的机制，建立了界面失效模型和纤维束断裂模型，并且初步界定了模型用的适用范围。 |
| 6. | The main fracture model of ultra fine atc ceramic is intergranular fracture . the analysis on the microstructure of the ultra fine atc ceramic demonstrated that the ceramic is intergranular - transgranular structure
超细a ， c陶瓷主要的断裂方式是沿晶断裂，伴有部分穿品断裂及塑性断裂。 |
| 7. | The real - space renormalization group approach is close to fractal and is widely used in geometric phase transition systems without hamilton , for example , percolation model , rock fracture model , flit ant model
实空间重整化群方法与分形有密切的关系，在不具有哈密顿的几何相变系统，如渗流，岩裂，自回避无规行走等模型广泛地被应用。 |
| 8. | Assume that material constants exponential functions or power functions of spatial variable , the related bending fracture models are set , i . e . a series of boundary value problems of partial differential equations are established
再将材料常数依次设为空间变量的指数函数和幂函数，建立了相应的弯曲断裂模型，即一系列相关的偏微分方程的边值问题。 |
| 9. | Similar to percolation , the critical rock fracture model is established by renormalization group theory approach , and the relation between the fracture rules and the critical probability , and the fractal dimension , and the critical exponents is studied
类似与渗流模型，就岩裂模型我们提出岩裂规则系数的概念。在此基础上，对该模型进行了研究。得到一些有趣的结论。 |
| 10. | The main work and achievements are summarized as follow : hudson ' s crack model and liu ' s fracture model were introduced . the anisotropic properties of rocks with dry and water - filled parallel fractures were discussed
全文主要工作包括以下几个方面：介绍了hudson的几种裂纹模型以及刘恩儒等提出的裂缝模型，用弹性常数随角度的变化关系图讨论了含排列干充水裂缝岩石的各向异性。 |
