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 practical and effective expressions of stress strain constitutive relation and damage evolution for elastoplastic damage problems are proposed.
水化损伤劣化了岩体的力学性能和承载能力，直接减小了岩体的有效承载面积，定义了损伤变量后，损伤应力可采用应变等效的方法进行计算。
Erosion damage decreases rock load area, after defining damage variable, the damage stress in rock can be calculated by the method bring forward by Lemaitre conveniently.
很显然，压抑的情感会对生理有消极作用，可能类似与应力损伤，尽管确切的途径我们还不清楚。
But suppressing feelings clearly has a negative effect on physiology, probably akin to stress damage, though the exact pathway isn't yet known.
采用焊点疲劳寿命预估方法，通过有限元分析并结合应力计算，即可计算出实际载荷工况下的焊点疲劳损伤。
With the welding spot fatigue lifetime pre-estimation method, by combination of the finite element analysis and stress calculation, the welding spot fatigue damage under actual load can be calculated.
位错的形成与离子注入引进的损伤和淬火过程中的热应力有关。
The ion-implantation damage defects and thermal stress during quenching step are responsible for the formation of dislocations.
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。
Nodular cast iron specimens with typical mesostructure are tested to study the meso damage evolution and failure mechanism at different triaxial stress states.
因此，在损伤的预应力钢筋混凝土结构中波传播理论的研究具有广泛的应用前景。
There are extensive prospects of application for the wave propagation theory in the prestressed and reinforced concrete structures.
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。
Based on the fatigue cumulative damage models, a damage evolution equation for flexural fatigue of SFRPC slabs is set up.
同时也是一个强烈非平衡过程，线性近似不能很好地描述它，必须采用更强烈的损伤对于应力的依赖关系。
At the same time it is a non-equilibrium process, linear approximation can't describe it properly, a strong dependence of damage on stress must be taken on.
从应力波表层损伤理论分析了混凝土表层“开坑区”的侵彻特性，提出“简化等效阻力线”的计算方法；
Penetration performance in surface layer of concrete target was analyzed by stress wave damage theory, calculating method base on "simplified equivalent resistance line" was presented.
研究疲劳应力应变滞后环对探讨疲劳积累损伤很重要。
It is important to study fatigue stress - strain hysteresis Loop on cumulative fatigue damage.
降模量及弹性模量对局部损伤变量率的影响取决于流动应力的大小。
The influences of softening modulus and elastic modulus on local damage variable rate depend on the flow stress level.
并得出了损伤变量分别随应力和应变而变化的规律。
The evolutional law of damage variable as a function of stress was obtained.
有的弯管由于局部应力较高，蠕变损伤明显。
Creep damage was marked in some bend which local stress is higher.
通过演化曲线可以看出，分形维数与损伤变量随应力的递增均呈非线性增加，但分维的变化较平缓；
The evolution curve show known that fractal dimension and damage variable present nonlinear increase with the increment of stress, and the change of fractal dimension is relatively smooth.
随着流动拉应力降低，局部损伤变量增加。
Local damage variable increases as flow tensile stress acting on the band decreases.
本文主要研究了含多部位损伤结构的应力强度因子和剩余强度。
In this dissertation, the stress intensity factors and the residual strength of panels with multiple site damage are studied in detail.
结果表明巷道围岩的损伤主要与地应力有关。
The result shows that the damage of rock surrounding tunnel mainly depends on the natural stress.
从残余应力计算中可知，采用损伤力学原理，使厚壁圆筒产生自增强的效果，从理论上是可行的。
From the calculation results, it is feasible in theory to produce self-reinforced effect of reactor by adopting the damage mechanical principle.
通过对岩石试样在加载前后测得的CT数作差值运算，可获得岩石试样在不同应力阶段的CT密度损伤增量。
Rock density damage increment with ct can be obtained by subtracting ct number of the undisturbed rock samples from that of the loaded rock samples.
结果表明：在开孔尺寸一定的情况下，随着板宽的增大，开孔损伤板的应力集中因数减小；
The stress concentration factor (SCF) decreased with the increase of the width of plates when the hole diameter was definite.
受力不均、夹持损伤和应力集中是影响钢绞线脉动拉伸疲劳试验的三个关键问题。
The uneven distribution of loading, the clamping damage and the stress concentration were thought to be the three key factors influencing the fatigue test of steel strand with pulsating tensile load.
在某些情况下，如进行复杂应力条件下的疲劳素损伤分布分析，疲劳失效寿命和应力幅水平的连续分布模型更有意义。
In some cases, the continuous distribution model of fatigue failure life and stress amplitude level is more valuable in analyzing the damage of ponogena under complicated stress.
该模型综合了变形、能量累积以及荷载历程对预应力混凝土构件损伤-破坏的影响，对不同的地震模式有更好的适用性。
This model synthesizes the effect of distortion, energy accumulation, and loading history to damage-failure of prestressed concrete member, thus may be applied to different earthquake patterns.
针对混凝土多轴应力状态下各向异性损伤的特点，建立了各向异性弹塑性损伤模型。
In view of the anisotropic damage characteristics of concrete under multiaxial stress state, an anisotropic elastoplastic damage model is presented.
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。
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.
对这些曲线的分析导致结论：材料破坏时的损伤是所加应力的递减函数。
The analysis of these curves leads to a conclusion that the material damage at rupture is monotonically decreasing function of applied stress.
结果表明，在不同应力水平下，推进剂的累积损伤基本符合线性累积损伤规律。
The results show that the cumulative damage of propellants under the different stress levels agrees with linear rule.
当岩体受到温度应力作用引起损伤，岩石的抗压强度发生显著的变化，严重影响着工程的稳定性。
When the rock get damage caused by temperature stress, the evidently change of rock compression strength will happen, which seriously influences the stability of engineering.
当岩体受到温度应力作用引起损伤，岩石的抗压强度发生显著的变化，严重影响着工程的稳定性。
When the rock get damage caused by temperature stress, the evidently change of rock compression strength will happen, which seriously influences the stability of engineering.
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