Based on strain mode shape (SMS), the direct index methods of damage location and degree detection are presented and founded.
提出并建立了损伤位置直接指标法、局域应变模态面积损伤程度直接指标法。
Strain energy change is used as damage index and a nondestructive crack detection method is proposed.
把结构遭受裂缝损伤的应变能变化量作为损伤指标，提出一种新的无损裂缝识别方法。
It is controlled by the sensitive index of the strain rate and the cavity growth rate of material.
材料的应变速率敏感性指数与孔洞长大速率通过不同的变形机理图控制着这种过程。
We go deep into discussing the studies on structural damage detection based on modal strain energy, and propose a new damage detection index based on the change of modal strain energy ratio.
在此基础上对基于模态应变能的损伤识别方法进行了深入探讨，并提出了基于模态应变能比变化率的损伤识别新指标。
The formulas for obtaining strength and strain parameters of rock mass are described using modified index RMR of rock mass quality.
用修定的RMR岩体量化指数从给定公式中确定岩体强度和应变参数。
Thirdly, plastic strain ratio and strain hardening index are the two key parameters of material's formability.
塑性应变比与应变硬化指数是评价板料成形性能的两个重要参数。
With the strain aging temperature increasing, strength and hardness increases, plasticity and toughness decreases, yield ratio has the ascending trend, hardening index decreases.
随着应变时效温度升高，强度和硬度增加，塑性和韧性下降，屈强比呈升高的趋势，形变强化指数降低。
These prove that the strain-rate sensitivity index depends tightly on the deformation route from experiment, even on the condition that those stress-state are similar.
这就从试验上判明，即使在相同的应力状态下，应变速率敏感性指数也与变形路径密切相关。
Along with percentage of water loss and aggregate grade, the laws of small beam dry shrinkage strain and average dry shrinkage index.
小梁干缩应变、平均干缩系数随失水率、集料级配的变化规律。
Based on the theory of modal strain energy, a damage index is deduced to identify the concrete bridge structure damage.
基于模态应变能理论，得到能用于混凝土桥梁结构损伤的识别指标。
The relationship between the residual strain and cyclic Numbers accords with the power of negative index under the cyclic loading and unloading pore water pressures.
在循环加、卸载孔隙水压力作用下，残余应变与循环次数的关系符合乘幂负指数关系。
Based on the theory of modal strain energy, a damage index is deduced to identify the plate-like structure damage.
应用模态应变能理论得到了能用于板类结构损伤的识别指标。
A method to calculate the section curvature ductility index of high strength concrete shear wall is induced by using stress-strain relationship of rectangle stirrup and plane section assumption.
利用矩形箍筋约束混凝土的应力一应变关系和平截面假定，建立了高强混凝土剪力墙截面曲率延性系数的计算方法。
Raising the testing strain rate, the strength and yield ratio increased the plasticity slightly decreased, but the strain rate hardening index kept constant.
应变率增加，材料强度提高，屈强比增大，塑性略有降低，但流变阶段应变率强化系数基本不变。
The spectrum of fiber Bragg grating(FBG) in inhomogeneous strain fields is distorted due to its inhomogeneity of both the periods and the effective refractive index.
当非均匀应变场作用在光纤布拉格光栅（FBG）上时，由于FBG周期和有效折射率在沿FBG长度方向都为变量，所以会导致光谱形状的变化。
The area of strain-stress curve is regarded as tenacity index, and the tenacity increase characteristics of the two kinds of fibers reinforced concrete were analyzed and compared.
并以应力-应变全程曲线所围面积作为韧性指标，对两种纤维混凝土在冲击荷载下增韧特性进行了对比分析。
In this paper the limit strain criterion is used as a limit state function and an improved JC method is used to calculate the reliability index of the stability of the tunnel.
采用极限应变准则作为极限状态方程，运用改进的JC方法分析了地下隧洞稳定的可靠度。
In this paper the limit strain criterion is used as a limit state function and an improved JC method is used to calculate the reliability index of the stability of the tunnel.
采用极限应变准则作为极限状态方程，运用改进的JC方法分析了地下隧洞稳定的可靠度。
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