| 1. | Research on constitutive relation for concrete materials based on statistical fracture theory
基于统计断裂理论的混凝土本构关系的研究 |
| 2. | In order to study the crack growth behavior in ferroelectric ceramics when an electric field is applied , a non - equilibrium statistical theory is used in this paper
摘要运用非平衡态统计断裂理论对电场中的中心穿透裂纹的扩展问题进行研究。 |
| 3. | ( 2 ) based on the existing damage model of rock blasting and the theory of rock damage and fracture , a new damage model for rock blasting has been founded
（ 2 ）在分析现有岩石爆破损伤模型和岩石爆破损伤断裂理论的基础上，建立了新的岩石爆破损伤模型。 |
| 4. | The fracture theory of interfacial layer is developed for engineering application of 3d braided c / sic composites . a curve with fracture mode mixity is depicted to predict the material toughness
发展了界面层断裂理论在三维编织c sic复合材料工程中的应用，初步建立了断裂混合度与断裂韧性的关系曲线。 |
| 5. | Cohesive models furnish a complete theory of fracture that is not limited by any consideration of material behavior , finite kinematics , non - proportional loading , dynamics , or the geometry of the specimen
内聚模型作为一个完全的断裂理论，不被任何材料特性、有限运动、非比例载荷、动力学或是试件的几何尺寸所限制。 |
| 6. | Based on the existing research results and up to the minute theory of rock damage and fracture mechanics , the blasting damage and fracture mechanism of rock and bedded composite rock is studied
本文基于前人的研究成果，采用岩体损伤、断裂理论的最新研究成果，研究了岩石和层状复合岩体在爆炸应力波和爆生气体作用下的损伤断裂机理。 |
| 7. | I . a mtil ( iaxial elastic - plastic hardening - sofling constitutive model of concrete is proposed iii order to offer a nonlinear material model of concrete for space restoring force analysis of reinforced concrete members taking into account the softening behavior of concrete . the concrete material model is incorporated the elastic - plastic hardening fracturing constitutive model of concrete with the plastic - fracturing theory of concrete , modified without defining two loading functiomis , and based on five parameter power function failure criterion proposed by guo zheng - hai etc from tsingliua ( jniversity , or three parameter unified strength theory proposed by yu mao - hong from x ian iiaotong university
1 、将砼弹塑性硬化断裂本构模型与塑性断裂理论结合起来，并加以改进，但无需定义两个加载面，以清华大学过镇海建议的五参数幂函数或以西安交通大学俞茂宏建议的，参数统一强度理论作为砼的强度破坏准则，建立了砼多轴弹塑性硬化松驰本构模型，能为钢筋砼构件空间恢复力分析提供砼非线性材料模型，并能反映砼材料的软化段。 |
| 8. | Bi - material interfacial fracture theories are researched with a phenomenon that cracks extend along interface . a gradient invading model of interface crack at the crack tip can gain stress fields along interface . so a formula of energy release rate for 3d braided cmc is deduced and the corrected formula of the energy release rate is examined with test results
研究了裂纹沿界面扩展的双材料界面断裂理论，利用倾斜侵入界面的裂纹模型解析了裂纹尖端沿着界面的应力场，推导了表征三维编织cmc复合材料断裂韧性的能量释放率公式g _ c ，并且用试验结果验证了能量释放率公式的正确性。 |
| 9. | After continuous researches on macroscopic fracture theories and microscopic fracture theories , characterization parameters of the material fracture toughness have been defined , and the microscopic fracture theories applied in 3d braided cmc also have been proposed . enough numerical simulations have been conducted , and also comparison with the theories has been done
经过对试验的反复推敲和论证，本文从宏观断裂理论和细观断裂理论的角度，确定了三维编织c sic复合材料(三维编织cmc )断裂韧性的表征参量，发展了能够在该材料中应用的细观断裂理论。 |
| 10. | After the 1960s , some new breakage theories , such as the fracture mechanics and the damage mechanics , had been applied in the research of the concrete . it made people had the farther understanding about the concrete . based on the existing research productions of inland and overseas , combining with the experimental results and applying the viewpoints of the composite material , the energy , the combination of grandness and
本文结合试验所得到的结果，在国内外已有研究成果的基础上，应用复合材料观点、能量观点以及宏观与细观、损伤与断裂相结合等观点，较为详细地探讨了钢纤维轻骨料混凝土的破坏特点和增强机理，并将损伤理论与断裂理论结合起来对其受力性能的规律进行深入的分析。 |
