然后利用双三角级数构造满足层板分层区位移边界条件的位移模态。
Then, a trigonometric series is applied to describe the displacement mode satisfying the boundary conditions.
本文提出一种基于模态展开和幂级数展开的混合方案，用于简化结构凝聚动刚度的计算。
A mixed scheme based on fixed mode expansion and power series expansion is suggested to simplify the calculation of the condensed dynamic rigidity of a structure.
轴向模态位移用福里哀级数表示，通过直接解法获得解析解。
The solution is obtained through a direct solution procedure with the axial modal displacements represented as Fourier series expressions.
基于模态展开和幂级数展开原理，提出了一种频响函数灵敏度分析的模态展开法。
Based on the theory of modal superposition and power series expansion, a modal superposition method for the sensitivity analysis of FRF is proposed in this paper.
提出一种连续系统动柔度的混合展开表达式，它的前面几项是模态展开，其余各项是幂级数展开。
In this paper a mixed expansion expression for dynamic flexibility of continuous systems is derived. The frist few terms of the expression are a sum of modes, the other terms are power series.
利用本文之有限元素分析模式与级数解模式，与求解特征值与特征向量的方法，可以求得功能梯度板之自然振动频率、振动模态与挫屈负荷。
The present finite element model and the series solution models are used to find the natural frequencies, vibration modes and buckling loads of the FGM plates.
提出一种连续系统动柔度的混合展开表达式，它的前面几项是模态展开，其余各项是幂级数展开。
In this paper a mixed expansion expression for dynamic flexibility of continuous systems is derived.
提出一种连续系统动柔度的混合展开表达式，它的前面几项是模态展开，其余各项是幂级数展开。
In this paper a mixed expansion expression for dynamic flexibility of continuous systems is derived.
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