Dynamic Amplification Factor of the ITER Diagnostic Upper Port Plug

被引：4

作者：

Pak, Sunil ^{[1
]}

Udintsev, Victor ^{[2
]}

Maquet, Philippe ^{[2
]}

Pitcher, Charles Spencer ^{[2
]}

Cheon, Mun-Seong ^{[1
]}

Seon, Chang Rae ^{[1
]}

Lee, Hyeon Gon ^{[1
]}

机构：

[1] Natl Fus Res Inst, Taejon 305333, South Korea

[2] ITER Org, F-13115 St Paul Les Durance, France

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2014年 / 42卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

Dynamic amplification factor (DAF); electromagnetic (EM) loads; ITER; upper port plug (UPP);

D O I：

10.1109/TPS.2014.2327126

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The diagnostic upper port plug in ITER is a long metal box cantilevered to the vacuum vessel port with 42 x M52 studs and nuts. The plug structure has a heavy payload at the front, such as the diagnostic first wall and the diagnostic shield module to protect the diagnostic components from plasma and neutron fluxes. This kind of structural configuration is susceptible to a resonance with the transient external load. For the upper port plug, the design-driving load is electromagnetic (EM) forces due to plasma disruptions. In this paper, the dynamic amplification factor (DAF) of the structure is calculated for such EM loads. The bolted joint at the back flange of the plug structure is also considered together with the port extension of the vacuum vessel and its influence on the dynamic behavior is investigated. The analysis results show that the bolted joint reduces the DAF as well as the natural frequency of the structure.

引用

页码：1977 / 1981

页数：5

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