EXPERIMENTAL DAMPING OF A HEAT EXCHANGE TUBE WITH A LARGE NUMBER OF SUPPORTS IN AIR AND WATER

被引：0

作者：

Park, Tae-Jung ^{[1
]}

Ha, Chang-Hoon ^{[1
]}

Cho, Min-Ki ^{[1
]}

Kang, Heung Seok ^{[2
]}

Lee, Kang Hee ^{[2
]}

机构：

[1] Doosan Heavy Ind & Construct Co, Chang Won, South Korea

[2] KAERI, Daejeon, South Korea

来源：

PROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2017, VOL 4 | 2017年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The flow induced vibration occurs frequently in a steam generator in the nuclear power plant. The large-scale steam generator has a large number of tube supports whose cell has rhombus-type shape, and there is a tiny clearance between tube and its support grid. The damping is very complex because of non-linearity and randomness. The experiment for damping was performed to investigate it with a number of 13 support spans both in air and water environment. The lower part of multi-span fixture was excited by root-mean-square random force with the range of 1 similar to 10 newton to get the frequency response function. The half-power bandwidth method was applied to obtain the damping ratio. The sensitivity of a number of spans was investigated in the range of 9 similar to 13. In addition, the damping was reviewed from a comparison with Pettigrew [1 similar to 4] and ASME B&PV Code [5].

引用

页数：7

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