JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2017, Vol. 47 ›› Issue (1): 125-130.doi: 10.6040/j.issn.1672-3961.0.2016.264

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Study on matching property of supports and stiffeneron circular exhaust duct

QI Jinsheng1, AN Chunguo1, BAI Jie2, WANG Zhan3*   

  1. 1. Shandong Electric Power Engineering Consulting Institute Corp. Ltd, Jinan 250013, Shandong, China;
    2. School of Civil Engineering, Shandong University, Jinan 250061, Shandong, China;
    3. School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong, China
  • Received:2016-07-14 Online:2017-02-20 Published:2016-07-14

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Abstract: The matching property of saddle support and stiffener on circular exhaust duct was studied, and the optimal position of heavy stiffener and saddle supports were determined by the finite element method(FEM). The results showed that the use of pure saddle supports might lead to stress concentration on the contact area of saddle and duct, meanwhile the maximum stress could exceed the allowable stress. The heavy stiffener near the supports could decrease the deformation and increase the buckling factor, while could hardly decrease the maximum stress. Saddle supports under the heavy stiffener could obviously decrease the deformation and increase the buckling factor, and could decrease the stress on the contact area of support and duct so that would meet the need of long-term security. The influence of wrap-angle to the stress concentration and buckling property was not obvious.

Key words: circular exhaust duct, finite element method, stiffener, heavy stiffener, saddle support, matching

CLC Number: 

  • TK225
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