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提出用有限单元法计算波纹管的固有频率，将波纹管离散为环锥壳单元，单元之间以结卢、圆相连结，推导出波纹管固有频率计算的特征方程。分析和算例表明，该法能方便有效地计算波纹管的固有频率，可为工程中波纹管的设计提供理论依据。
The finite element method is proposed to calculate the natural frequency of the bellows. The bellows is discretized as a ring cone shell element. The characteristic equations of the natural frequency of the bellows are deduced based on the connection between the elements. The analysis and examples show that this method can calculate the natural frequency of corrugated pipe conveniently and effectively, which can provide theoretical basis for the design of corrugated pipe in engineering.