The 3d exact equations to solve free vibration of the cylindrical shell were obtained by using power seriesexpansionmethod.
用幂级数展开法得到了求解该圆柱形梯度壳自由振动的三维精确公式。
2
The method is composed of two parts, the seriesexpansionmethod in the transonic region and the characteristics method in the supersonic region.
该法由两部分组成,跨音速段用级数解,超音速段用特征线法。
3
Emphasis is laid on the analysis, of large nonlinearities in system, for example, the FPK method, the closure method and the functional seriesexpansionmethod.