Based on double scalar isotropic damage theory, a new soil damage model and damage evolution equations were presented.
根据双标量各向同性弹性损伤理论，提出了一个土体损伤模型，给出了相应的损伤演化方程。
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。
A numerical simulation of stochastic damage evolution process in the condition of1ow cycle fatigue loading is discussed.
讨论一种低周疲劳下随机损伤演变过程的数值模拟方法。
Based on the fatigue cumulative damage models, a damage evolution equation for flexural fatigue of SFRPC slabs is set up.
结合原有的混凝土疲劳损伤模型，建立了预应力钢纤维混凝土板的疲劳损伤演变方程。
Eventually, the damage evolution and fatigue life of recycled concrete were investigated using the inverted-S damage model.
最后，基于倒s模型研究再生混凝土的损伤演化规律和疲劳寿命。
Based on the macroscale and microscale mechanics method, a research on fatigue damage evolution of welded joint is conducted.
用宏观与微观相结合的方法研究焊接接头疲劳损伤演变规律。
The anisotropic damage evolution law is obtained by the virtue of energy equilibrium and an equivalent singe variable equation.
各向异性的伤演规律可由能量平衡及当量单参数方程所确定。
Spectrum analysis was performed to determine the micro-mechanism of damage evolution of C fiber 3-D braiding composite material.
通过声发射波形信号的频谱分析，研究了碳纤维三维编织复合材料拉伸损伤的细观机理。
And based on the aim of the application of engineering, the pre peak rock 3 parts damage evolution equation and constitutive model are given.
从工程应用出发，给出了峰前分段岩石损伤演化方程及本构关系。
The relation of the rate of plastic damage energy dissipation and the damage evolution is obtained in energy analysis for void damage material.
从能量分析中给出了韧性金属材料空穴型损伤中塑性损伤的能耗散率，建立了一般的损伤演化规律；
Finally, according to the characteristics of the damage evolution, a spallation criterion for a particle-filled polymeric material is proposed.
最后，本文还根据损伤演化的特征建议了一个关于粒子填充高聚物的层裂准则。
Thus, in the framework of generalized standard materials, the damage evolution equation for isotropic elastic damaged materials has been derived.
在广义标准材料理论框架下，利用本构泛函展开法，推导出弹性各向同性损伤演化方程的一般形式。
The effect of the microcracks size on damage evolution was investigated to overcome the limitations of damage models based only on defect density.
针对以缺陷密度为参量的细观损伤演化模型的局限性，着重研究了微裂纹尺寸对损伤演化的影响。
The practical and effective expressions of stress strain constitutive relation and damage evolution for elastoplastic damage problems are proposed.
提出了一种实用有效的弹塑性损伤应力-应变本构方程与损伤演化方程。
The effect of damage evolution on mechanical properties of PMMA is studied by using a macro-description method combined with a mesoscale investigation.
本文采用宏观和细观相结合的方法，研究材料在破坏之前的缺陷演化对材料力学性能的影响。
Nodular cast iron specimens with typical mesostructure are tested to study the meso damage evolution and failure mechanism at different triaxial stress states.
选用具有典型细观结构特征的球墨铸铁材料进行试验，探讨这种金属材料在各种三轴应力状态下的细观损伤破坏。
The matrix damage evolution behavior and the effect of matrix micro-cracks on the dynamic characteristics of composite stiffened delaminated plates are studied.
研究了在简谐激励作用下复合材料加筋板基体微裂纹损伤的演化行为及其对加筋板动力特性的影响。
Therefore, the inverted-S damage model is very suitable for the description of damage evolution of recycled concrete for its strong adaptability and high accuracy.
倒s模型涵盖了损伤演化规律的各种类型，具有适应性强、精度高的特点，适用于混凝土材料的损伤演化描述。
The variation rule of the damage variable and the coupled variable, damage energy dissipation rate, can be described on macro aspect by the damage evolution equation.
采用损伤演化方程可以从宏观上描述损伤变量以及与其相伴的广义热力学力——损伤能量释放率的变化规律。
A new fatigue damage evolution equation was proposed according to the fatigue accumulative damage theory, the effectiveness of which was verified by experimental results.
根据疲劳累积损伤理论，提出了新形式的疲劳损伤演化方程，与试验结果对比，该方程能较好地反映新材料的损伤演化规律。
The theoretical model and the constitutive equation with the response of both tension and compression for elastic brittle damage evolution taken into account are derived.
提出了考虑拉压响应的弹脆性损伤演变的理论模型与本构方程。
The influences of damage and damage evolution on the nonlinear dynamic response and dynamic buckling for thin shallow spherical shells with circular hole are investigated.
研究损伤对开孔浅球壳非线性动力响应与动力屈曲的影响。
At the same time, some scientific hypotheses of the damage evolution equations and stress-strain relationship as well as the failure mechanism of rock mass are also proposed.
同时，也为进一步建立岩体结构合理的损伤演化方程、本构关系和研究岩石破坏机理提供了科学依据。
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。
Based on the adoption of elastoplastic damage theory and effective strain assumption, weld metal coupons were tested under repeated pull and their damage evolution law was determined.
基于各向同性弹塑性损伤假定和应变等效假设，采用重复拉伸的试验方法，得到了焊缝金属的损伤演化规律。
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。
After defining a logarithm damage variable and effective stress, we introduce a damage evolution equation at crack tip bytaking into account the physical mechanism of the development ofcavities.
本文在定义对数损伤变量和相应的有效应力之后，引入了一种考虑材料内部空穴演变的裂尖损伤演变方程。
Finally, this study analysised the asphalt mixture fatigue damage evolution process of stress control mode and established a relationship between unit load fatigue damage rate and the fatigue life.
最后，本研究分析了应力控制模式下沥青混合料疲劳试验过程中的损伤演化规律，建立了单位加载疲劳损伤率与疲劳寿命之间的关系式。
The total evolution index was induced and the FEM of material plastic damage model was supplied to simulate the nonlinear damage evolution of bridge structure subjected to the earthquake excitation.
引入了地震损伤的整体演化指标，通过有限元方法利用材料塑性损伤模型模拟桥梁结构在地震激励下的非线性损伤演化过程。
Although the expressional form of damage evolution equation in complicated stress condition is the same as that in simple load condition, the influence factors are different of the damage parameters.
复杂应力条件下的黄土损伤演化方程的表现形式与简单加载条件下的完全相同，区别只是在于损伤参量的影响因素不同。
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