Consequently it has very important theoretical significance to research the unloading characteristics of rock mass with damage mechanics theory.
因此运用损伤力学理论研究岩体在卸荷过程中的特性具有重要的理论意义。
Then, the present Damage Mechanics theory is briefly introduced , and the advantages of using damage mechanics in rotor fatigue strength analysis is also discussed.
最后，就汽轮机转子疲劳强度的损伤力学研究进行了展望。
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。
Finally, according to the chemical and mechanical damage theory, the mechanics performance of a concrete tube structure suffered some chemical damage are simulated.
最后，根据前面的化学和力学损伤理论，模拟遭受化学损伤条件下混凝土结构的力学性能。
This paper introduces the basic theory of damage Mechanics, especially in the part of concrete damage research and compares several kinds of damage evolvement models firstly.
本文首先介绍了损伤力学的基本内容以及混凝土损伤理论研究现状，比较了各种损伤演化模型。
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。
When using the theory of damage mechanics, the damage constitutive equations derived directly from thermodynamics is adopted to do following analysis.
应用损伤力学理论，采用从热力学出发导出的各向同性材料的损伤本构方程和损伤演化方程来进行计算分析。
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 simulation theory, a geologic mechanics model is established and used for research on deformation and damage mechanism of anti-dip layered rock slop.
根据相似理论建立地质力学模型，研究反倾层状边坡岩体的变形破坏机制。
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。
The conservative integral of damage mechanics for the reflective cracking in asphalt pavements is established based on the elastic damage theory developed by the authors.
基于损伤力学理论，建立了沥青路面反射裂缝问题的损伤力学守恒积分，证明了在反射裂缝形成过程中应变能密度的守恒性。
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 theoretical basis for this modeling is the damage mechanics combined with the theory of methane gas migration in coal seams in terms of localization approach.
模型的理论基础是将损伤力学与煤层中瓦斯气迁移的理论通过局部化处理相结合。
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。
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。
After built the material's defect model in theory, combined the attenuation image and damage mechanics of acoustic, we can get the material's invalidation model.
从理论上建立材料的缺陷模型，并结合声衰减分布图与超声损伤力学原理，就能获得材料的失效模型。
The strain gradient enhanced damage model based on strain gradient theory and continuum damage mechanics is established and applied to forecasting the localized damage in rock material.
本文提出基于应变梯度的损伤模型，并用于材料局部化损伤模拟预测中。
In this paper, a new method based on the theory of damage mechanics is suggested to estimate the fatigue life of offshore petroleum steel structures.
在损伤力学的基础上本文提出了深水海洋石油钢结构估算疲劳寿命的新方法。文中给出了石油大学新建立的疲劳损伤数学模型。
In this paper, a new method based on the theory of damage mechanics is suggested to estimate the fatigue life of offshore petroleum steel structures.
在损伤力学的基础上本文提出了深水海洋石油钢结构估算疲劳寿命的新方法。文中给出了石油大学新建立的疲劳损伤数学模型。
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