Open AccessStress analysis and design of the waveguide bellows for EAST ECRH system
Author(s) -
Liyuan Zhang,
Xiaojie Wang,
Fukun Liu,
Handong Xu,
Dajun Wu,
Yunying Tang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/892/1/012066
Subject(s) - bellows , stress (linguistics) , tokamak , waveguide , deformation (meteorology) , miniaturization , mechanical engineering , materials science , structural engineering , engineering , electrical engineering , physics , composite material , plasma , optoelectronics , nuclear physics , philosophy , linguistics
A 140GHz 4MW long pulse ECRH system for the experimental advanced superconducting tokamak (EAST) has launched in 2011. The waveguide (WG) bellows is an important component in transmission lines, which can absorbs the axial deformation caused by thermal expansion. The flexible WG inside WG bellows dominates bellows performance. In this paper the mechanical analysis including stress analysis and error analysis for flexible WG is presented in detail. A prototype of the WG bellows has been designed and fabricated.