In combination of studies on AE and mechanical process with that of fracture and damage of material, the concept of AE process is proposed.
将对材料声发射的研究，力学过程的研究，同对材料断裂损伤等破坏过程的研究相结合，提出了声发射过程的概念。
The parallel computing technique is applied to design the programming for numerical simulating the fracture and damage of concrete under static-dynamic load.
对混凝土进行静动力学分析的数值模拟程序，从多个方面考虑了其中的并行算法设计。
The results show that considering the effect of fracture toughness increment and retardation of crack of anchorage, better effect of anchorage is reflected in numerical fracture and damage simulation.
计算结果表明：在断裂损伤数值计算中考虑锚杆对裂隙的增韧止裂作用可以更好地反映锚杆的加固效果。
So it 's necessary to study the damage in the fracture during hydraulic fracturing and find out corresponding method.
因此有必要对压裂过程中的裂缝损害进行研究并找出相应的解决措施。
In mining engineering, strata models are often simulated by similar material simulation model, rock bending deformation and fracture damage is the serious problem.
而在采矿工程中，相似材料模拟的往往是层状模型，岩层的弯曲变形和断裂破坏是关键问题。
The static effect affects only ultimate fracture condition (the critical residual strength), while the dynamic effect affects damage evolution and residual strength degradation rate.
静态效应只影响最终断裂条件，而动态效应影响疲劳过程中的损伤演化规律和强度退化速率。
This paper is based on the understand of the concrete material. The mathematic model to study the process of concretes damage and fracture is being put forward.
本论文立足于对混凝土材料特性的认识，提出一个进行混凝土损伤与断裂过程模拟的细观数值模型。
The sliding crack model has been widely applied in the damage and fracture analysis of the rock-like materials.
滑动裂纹模型被广泛应用于岩石类材料压剪断裂分析及损伤分析。
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。
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。
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.
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。
You could have broken your fall with your hand but might have done what I recently did in a fall and fracture your wrist and damage tendons in your hand.
你是可以用手撑住自己不摔跤，但是也许就会落得跟我一样的下场：腕关节折断，手部肌腱受损。
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 cement samples damage and fracture by exploding load was studied by experiment and numerical simulation method.
从实验和数值模拟两方面对爆炸载荷对水泥试样的损伤破坏进行了研究。
The elastic damage theory is valid to describe the damage and fracture behavior of concrete.
研究表明，本文损伤模型可以较好地描述混凝土材料的损伤与破坏行为。
By use of dynamic strain testing, the ultrasonic wave, bedded composite rock damage and fracture mechanisms and the fragmentation process during blasting have been experimentally studied.
运用超动态应变测试技术、超声波检测仪对层状复合岩体的爆破损伤破坏机理和破坏过程进行了实验研究。
The paper introduced the influence of self-anchored suspension bridge on structural safety performance after the damage and fracture of boom for reference.
介绍了自锚式悬索桥在吊杆损伤断裂后对结构安全性能的影响，为以后自锚式悬索桥的结构设计提供参考。
These studies on complexity of fracture and physical mechanism of damage fracture are very important.
这方面的深入研究有助于认识断裂过程的复杂性及损伤断裂的物理机理。
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。
Other advantages of it are good rheological property, strong fracture making ability and sand carrying capacity, and little damage to formation, etc.
该压裂液配制简单，不需要杀菌剂和破胶剂，具有流变性能好、造缝与携砂能力强、对地层伤害小、使用方便等优点。
The damage and corrosion of titanium regulating valve is described and the fracture cause of valve core is analyzed.
介绍了钛调节阀的损坏和腐蚀情况，分析了阀芯的断裂原因。
It is conducted an experimental study on the damage and fracture characteristics of notched concrete beams with two groups of different depths by ultrasonic technology with strain gauge technique.
利用超声波技术并辅以电测法，对两组不同开口深度混凝土缺口梁的损伤断裂特性进行了试验研究。
The experimental result coincided with the thermal shock parameter R and R calculated values based on thermal shock fracture and thermal shock damage.
这同热震断裂和热震损伤理论计算的热震参数R和R的结果相一致。
It is the initial damage, damage evolution and propagation fracture that result in various failure of jointed rock mass.
正是由于这些节理裂隙的初始损伤、损伤演化、扩展断裂等缺陷导致岩体产生了各种形式的破坏。
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。
Based on damage and destroy theory of bedded composite rock, damage principal equation and damage and fracture rules of bedded composite rock have been founded.
以层状复合岩体损伤破坏理论为基础，建立了层状复合岩体损伤本构方程及其破坏断裂准则。
Experimental study shows that the damage rate of fracturing fluid to fracture surface is between 31. 84% and 36. 28%; the damage rate to propping agent layer is between 29. 27% and 30. 04%.
针对太2气层的实验研究表明，压裂液对裂缝壁面的伤害率平均在31.84%- 36.28%之间，压裂液对支撑剂层的伤害率平均在29.27%—30.04%之间。
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。
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。
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