By analysing and discussing the ductility of reinforced concrete beams under flexure, the author gives formula for calculating curvature ductility index of section.
本文对钢筋砼受弯构件的延性进行分析和讨论，提出了截面曲率延性系数的计算公式。
In this paper, an integral formula for elliptical flexure hinge is deduced by introducing centrifugal Angle as the integral variable.
以椭圆的离心角为积分变量，得到椭圆柔性铰链的转角计算的积分公式，推导出椭圆柔性铰链的刚度表达式。
Based on the simple beam theory, it analyzes the vibrancy character of straight-leg flexure structure, and derives the practical formula of this structure to calculate the resonance frequency.
运用梁的理论讨论了一种常见的结构——直脚型结构的振动特性，提出了计算结构谐振频率的实用算法。
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