Based on wave equation, the formula of displacement and strain in different section are derived, and the frequency equation is given.
从波动方程出发推导了各分段的位移及应变的表达式，同时给出了频率方程。
Based on the dynamical equation, the constitutive relation and the strain-displacement relation, the vibration equation of small deflection beams was derived.
基于动力学方程、本构关系和应变-位移关系建立了小变形粘弹性梁的振动方程。
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