NDLI: Vibration characteristic analysis and experiment of non-rigid airship with suspended curtain

Content Provider	Springer Nature Link
Author	Chen, Yu feng Chen, Wu jun He, Yan li Zhang, Da xu
Copyright Year	2015
Abstract	In order to evaluate the vibration characteristics of non-rigid airship with suspended curtain, we introduce vibration characteristic analysis method of the inflatable membrane structure. Modal numerical method of the inflatable membrane structure under the pressure difference is validated by the model testing of the inflatable cantilever tube. The finite element model of 75m airships is established to simulate the vibration characteristics subjected to only pressure difference and the resultant force of weight and buoyancy. The nonlinear static deformation and stress analysis are investigated for two kinds of equilibrated configurations with various pressure differences, as well as the vibration characteristics. The structural efficiency of the suspended curtain is investigated through the force transfer ratio at the assumed equilibrated point. The effects of manufacture error of the suspended cable length on the structural behavior are analyzed. The results indicate that the local area of airship envelope connected to the suspended cable is a weak part. Various pressures and pressure gradients have significant effects on the global airship structure and the suspended curtain. The suspended curtain is effective to transfer the equilibrated force from the bottom to the top of airship envelope. Manufacture error of the suspended cable length could result in obvious deformation of local airship envelope. The presented work is valuable to the structural engineering design of stratospheric airship.
Starting Page	625
Ending Page	633
Page Count	9
File Format	PDF
ISSN	10071172
Journal	Journal of Shanghai Jiaotong University (Science)
Volume Number	20
Issue Number	5
e-ISSN	19958188
Language	English
Publisher	Shanghai Jiaotong University Press
Publisher Date	2015-05-20
Publisher Place	Shanghai
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	non-rigid airship suspended curtain pressure difference net buoyant density manufacture error Electrical Engineering Materials Science Computer Science Architecture Life Sciences
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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