The macroscopic fatigue behavior was characterized in terms of stiffness reduction and fatigue cracks.
考察了疲劳过程中刚度下降和疲劳裂纹产生情况。
A simplified expression for calculating the critical stress is developed according to a stiffness reduction technique. The experimental and theoretical results show good agreement.
利用层压板刚度减少技术推导了含表面缺口复合材料层压板的临界应力表达式。
In calculating the seismic force of high-rise steel structures, the periods should be multiplied by a reduction factor (0.9) to account for the stiffness due to non-structural elements.
在计算高层钢结构地震剪力时，周期应乘以0.9折减系数以考虑非结构构件对刚度的影响。
Models based on uniform reduction of stiffness and smeared crack concept are both employed to compare the (efficiency) and (relative) advantages of each model.
对以刚度均减和裂缝概念为基础建立的两种模型进行效果和优劣比较。
This led to reduction in joint pain, stiffness, and restricted motion.
药品的使用将减少关节疼痛，僵硬及限制性运动。
The relatively small reduction in stress intensity magnification factor with increasing stiffness of the stiffener.
随着加强肋刚度的增加，应力强度放大因子则相应有所减小。
The degenerated cable element is derived by the reduction of stiffness of the conventional beam element and the results are acceptable.
退化型悬索单元能在对普通梁单元进行刚度折减的基础上给出良好的分析结果。
The results show that the vibration reduction effects of floors in the structure with uniform mass and stiffness are more obvious when the numbers of human occupants increase.
结果表明：对于一般的质量和刚度分布均匀的结构，人体对结构具有微弱的减振作用。
With the reduction of natural frequency stiffness and transformation of modal shape structure, the corresponding of the structure can also be changed.
刚度的减小自然伴随结构自然频率的减小和结构模态振型的转变，相应结构的动力响应也会出现转变。
The non-linear performance of the concrete is caused by sudden changes in stress and reduction of stiffness in surrounding concrete which owe to the cracks.
混凝土开裂引起周围应力的突然变化和刚度降低是导致钢筋混凝土非线性的重要因素。
The method has been used to investigate the influences of the brace stiffness and the viscous dampers parameters on vibration reduction effects.
利用本方法研究了支撑刚度及阻尼器参数对非线性粘滞阻尼器减振效果的影响。
In a gear reduction unit, for example, the shaft diameters are usually set by the requirement of getting sufficient shaft stiffness to keep the misalignment of the gear teeth within strict bounds.
例如，在齿轮减速装置中，轴径通常是由轴的刚度要求决定以在严格界限内保持齿轮齿形的不错位。
Finally, the vibration reduction performance of each kind of track and fasteners are analyzed and compared within the limit of reasonable stiffness.
最后，在轨道刚度的合理取值范围内，对比分析了各种减振型无砟轨道、减振扣件的减振性能。
Finally, the vibration reduction performance of each kind of track and fasteners are analyzed and compared within the limit of reasonable stiffness.
最后，在轨道刚度的合理取值范围内，对比分析了各种减振型无砟轨道、减振扣件的减振性能。
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