金属波纹管的稳定性在宇航、航空、精密仪表以及大型工程结构等领域属于关键技术指标,而且是研究难点。为了解决这类问题,文中应用MSC.Marc软件,针对典型的U型波纹管进行柱失稳研究,研究其极限失稳压力以及变形规律等。通过试验验证,有限元法的分析精度优于工程方法。将有限元法、工程设计和试验结合应用,共同进行金属波纹管柱失稳研究,能够显著提高设计精度,加快研制进程,减少研制成本,进而提高产品的综合性能与市场竞争力。 The stability of the metal bellows in the aerospace, aviation, precision instruments and large engineering structures and other fields are key technical indicators, but also the research difficulties. In order to solve these problems, MSC.Marc software is applied in this paper to study the column instability of a typical U-shaped corrugated tube and to study its ultimate buckling pressure and deformation law. Through experimental verification, the finite element analysis accuracy is better than engineering method. The finite element method, engineering design and test combined with the application of joint research of corrugated pipe instability, can significantly improve the design accuracy, speed up the development process, reduce development costs, thereby enhancing the overall performance of products and market competitiveness.