An example is analyzed to describe the modal damping ratio method in detail, the law of the upper and lower damping ratio with structural stiffness changing is obtained.
通过算例分析,对振型阻尼比法的实施过程进行了详细阐述,得到阻尼比虽上下部结构刚度变化的规律。
参考来源 - 非比例阻尼结构动力响应分析Prestressed concrete continuous beam bridges are widely used for their advantages, such as little deformation, good structural stiffness, comfortable driving, few expansion joints, and simple maintenance. So it has being developed rapidly.
而同时预应力混凝土连续梁桥体系具有变形小，结构刚度好，行车平顺舒适，伸缩缝少，养护简单等优点在实际工程中大量应用。
参考来源 - 内昆铁路花土坡特大桥高墩大跨连续梁设计研究It is a common method of numerical analysis. At present, it's the most reliable and efficient method for complex structural strength issue.
它作为一种通用的数值分析方法是目前研究复杂结构刚度、强度问题最为可靠和高效的方法。
参考来源 - 6110柴油机增压后机体的改进设计·2,447,543篇论文数据，部分数据来源于NoteExpress
讨论用有限元分析温度对结构刚度和强度的影响。
The thermal influence on stiffness and strength of structures is presented.
同时，本文还考虑了结构刚度非线性对颤振速度的影响。
The effect of nonlinear structural stiffness on flutter velocity was considered, too.
提出了带结构刚度非线性的超音速弹翼的颤振分析方法。
We present a method of analyzing flutter characteristics of wing with nonlinear stiffness in supersonic flow.
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