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。
The methodology of fracture mechanics based on continuous crack growth was applied to the investigation of the microscopic damage evolution and toughness calculation for fiber composites.
文中以裂纹连续扩展的断裂力学方法，研究单向纤维复合材料的细观损伤演化与韧度计算。
Fatigue damage estimation of the tendons was made using fracture mechanics approach, establishing the fracture crack growth rate model and limit state equations for failure modes.
疲劳寿命的计算采用断裂力学方法，建立疲劳裂纹扩展模型和失效模式的极限状态方程。
The physical meanings of the formula presented are explained from the standpoint of submacroscopic fracture mechanics and damage mechanics.
从细观断裂力学和损伤力学的观点出发，解释了该规律的物理意义。
Finally, the methods for calculating fatigue life based on fracture mechanics for welded node and cumulative damage theory for bolted sphere node respectively have been presented.
本文在大量实验的基础上提出了对焊接节点采用断裂力学的方法和对螺栓球节点应用累积损伤理论估算它们疲劳寿命的计算方法。
Breakage mechanics is a new theory different from fracture mechanics and damage mechanics.
岩土破损力学是不同于岩土断裂力学和岩土损伤力学的新理论。
The whole flaw development process of earth body in structure is analyzed according to the theory of damage mechanics and fracture mechanics from the view point of energy.
本文运用伤力学和断裂力学理论，从能量的角度对结构性土体裂纹扩展进行了全过程分析。
Based on the theory of damage mechanics, fracture mechanics and elastic mechanics, the formation and expanding of control fissure were researched under the condition of cycle of freezing and thawing.
基于损伤力学、断裂力学、弹性力学等理论，对冻融循环条件下主控结构面的产生和扩展进行了研究。
In addition, the crack propagation and fatigue damage of CSP under wind load in the case of the material which have initial crack have been analyzed using fracture mechanics method.
此外，还运用断裂力学方法分析了材料有初始裂纹的管道在风荷载作用下的裂纹扩展及疲劳损伤。
Determining precisely flaw sizes of structural materials is the basis of the application of fracture mechanics and damage tolerance design to the engineering.
准确测定结构材料中缺陷的尺寸是断裂力学和损伤容限设计在工程中应有的前提。
Furthermore, the intrinsic mechanism of energy dissipation during the deformation and fracture of rocks can be disclosed by the research of meso damage mechanics.
进一步通过细观损伤力学的研究，可以揭示岩石变形破坏过程中能量耗散的内在机制。
The continuous damage mechanics theory was applied in hydraulic fracture models and finally could make the results of fracture simulation meet actual conditions in recent years.
国外将损伤力学理论引入到水力裂缝模型中，使裂缝模拟更加接近实际，从而推进了水力裂缝动态行为的理论研究。
In recent years, concept of continuous damage mechanics was applied to investigation of failure and fracture of rock and the like materials.
最近几年来，连续损伤力学的观点已开始被应用于岩石类材料的破坏断裂的研究。
Using the theory of damage mechanics and fracture mechanics, the damage tensor, effective stress tensor and damage strain, etc. of rock mass are defined, propagation equation of damage is developed.
运用损伤力学以及断裂力学理论，定义了岩体损伤张量、有效应力张量、损伤应变等，建立了损伤演化方程，从而建立了多裂隙岩体的损伤断裂模型。
From the viewpoint of mechanics, it is, as a matter of fact, a process from local damage, to brushfire fracture and eventually to integral collapse.
从力学角度而言，它实际上就是一个从局部耗散到局部破坏最终到整体灾变的过程。
The stiffness of the local spring is deduced by fracture mechanics, then the relations between the vibrational power flow and the position and the characteristic size of the damage are obtained…
研究了梁在集中载荷作用下的弯曲波运动以及振动功率流的输入和传播 ，分析了振动功率流与破损位置及其特征尺寸的关系。
The stiffness of the local spring is deduced by fracture mechanics, then the relations between the vibrational power flow and the position and the characteristic size of the damage are obtained…
研究了梁在集中载荷作用下的弯曲波运动以及振动功率流的输入和传播 ，分析了振动功率流与破损位置及其特征尺寸的关系。
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