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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Hui-Feng Tan,Zhen-Yong Du,Chang-Guo Wang.Prediction on Deflection of Inflated Beam[J].Journal of Harbin Institute Of Technology(New Series),2013,20(1):8-11.DOI:10.11916/j.issn.1005-9113.2013.01.002.
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Prediction on Deflection of Inflated Beam
Author NameAffiliation
Hui-Feng Tan Center for Composite Materials, Harbin Institute of Technology, Harbin 150080, China 
Zhen-Yong Du Nanjing Resarch Institute of Electronic Technology, Nanjing 210013, China 
Chang-Guo Wang Center for Composite Materials, Harbin Institute of Technology, Harbin 150080, China 
Abstract:
The bending stiffness of the inflated beam is considered as a constant before wrinkles appear, and it decreases obviously as wrinkles propagate. The formula of the bending stiffness is obtained based on the membrane theory in this paper. Furthermore, the definition of dimensionless bending stiffness factor is presented; the relationship of bending stiffness factor and wrinkling factor is derived; the bending stiffness factor is simplified as different linear functions with wrinkling factor, and the simplified model of bending stiffness of inflated beam under bending is also obtained. The bending stiffness including expression of wrinkling factor is substituted into the deflection differential equation, and then the slope and deflection equation of the inflated beam is deduced by integrating the deflection differential equation. Finally, the load-deflection curve is obtained, which is compared with the experimental data in a previous paper. It has a good agreement with each other.
Key words:  membrane structure  inflated beam  bending stiffness  wrinkle  stiffness factor
DOI：10.11916/j.issn.1005-9113.2013.01.002
Clc Number:TU353
Fund:

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