벨로우즈; 전당행렬법; 신축이음; Bellows; Transfer Matrix Method; Expansion Joint.
Issue Date
2011-04
Publisher
한국소음진동공학회
Citation
한국소음진동공학회 논문집, 2011, P.544-549
Abstract
Simplified formulae for axial and bending natural frequencies of bellows are developed using an equivalent thin-walled pipe model. The axial and bending stiffness of bellows is determined using lumped transfer matrix method. Accordingly, the Expansion Joint Manufacturers Association (EJMA) formula for axial and bending stiffness calculation is modified using two different equivalent radii. The results from the simplified formulae are verified by those from a experiment result and a finite element (FE) model and good agreement is shown between the each other.