Deflection analysis of the airship structure based on the tapered inflatable beam
| Autor: | Ji’an Chen, Chen Zheng, Xiaowang Li, Haitao Zhao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Timoshenko beam theory
Structure analysis business.industry Computer science Aerospace Engineering 020101 civil engineering 02 engineering and technology Structural engineering Finite element method 0201 civil engineering Couple 020303 mechanical engineering & transports Inflatable 0203 mechanical engineering Deflection (engineering) Bending moment Structure based business |
| Zdroj: | Aircraft Engineering and Aerospace Technology. 91:601-606 |
| ISSN: | 1748-8842 |
| DOI: | 10.1108/aeat-04-2018-0138 |
| Popis: | Purpose The purpose of this paper is to analyse the deflection of the flexible airship structure in a new way which can decrease the calculation amount and improve the calculation speed. Design/methodology/approach Infinitesimal method and tapered inflatable beam theory are combined to study the mechanics characteristics of the airship. Firstly, infinitesimal method is introduced into the airship structure analysis. The airship structure can be divided into several tapered inflatable beam elements. Then, tapered inflatable beam theory is improved and a developed model of the tapered inflatable beam under bending moment is presented. Besides, it is proved that deflection caused by pure load and pure moment can be linearly superimposed. Finally, the deflection of the airship structure is studied by means of tapered inflatable beam theory. Findings This paper improved the tapered inflatable beam theory. Besides, the proposed method for deflection analysis of the flexible airship in this paper can reach the same accuracy with traditional finite element method (FEM). However, the number of beam elements is much less than the one of FEM shell elements, which will decrease the calculation amount much and improve the calculation speed. Practical implications The flexible airship is a new and developing research area in engineering practice. The proposed method in this paper provides one precise and high-speed way to analyse the deformation of the airship. Originality/value The paper draws its value from the contributions to development of inflatable structure and the flexible airship mechanics research. |
| Databáze: | OpenAIRE |
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