Using the second order perturbation theory, the formulae of vibrational force constants are derived in part one.
运用二阶微扰理论，本文第一部分首先计算了高阶力常数的表达式。
Under the excitation of harmonic force the vibrational power flow characteristics of plate with a surface crack are investigated from the view of structure-borne sound.
从结构噪声的观点研究了在简谐力作用下含有表面裂纹板的振动功率流特性。
Employed wave propagation approach, the vibrational power flow of a submerged infinite cylindrical shell coated with unconstrained viscoelastic layer excited by a radical harmonic force is studied.
采用波传播分析方法，讨论了外部敷设粘弹性自由阻尼材料的无限长圆柱壳在流场中受径向简谐激励的振动功率流。
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