A Numerical Analysis Study on Evaluation of the Reliability for Bellows in the Vehicle Exhaust System

수치해석에 의한 자동차 배기시스템의 벨로우즈 강도평가에 관한 연구

Bellows is a familiar component in piping systems as it provides a relatively simple means of absorbing thermal expansion and providing system flexibility. In routine piping flexibility analysis by finite element methods, bellows is usually considered to be straight pipe runs modified by an appropriate flexibility factor; maximum stresses are evaluated using a corresponding stress concentration factor. In this paper, the dynamic characteristics of bellows were investigated by Finite element methods. Using Anany program, the natural frequencies and evaluation of the reliability of bellows were also investigated.