Thermoelastic Behaviors of Fabric Membrane Structures

Authors: Roh, Jin-Ho¹; Lee, Han-Geol²; Lee, In³

Source: Advanced Composite Materials, Volume 17, Number 4, 2008 , pp. 319-332(14)

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Abstract:

The thermoelastic behaviors of an inflatable fabric membrane structure for use in a stratospheric airship envelope are experimentally and numerically investigated. Mechanical tensile properties of the membrane material at room, high, and low temperatures are measured using an Instron^® universal testing machine and an Instron^® thermal chamber. To characterize the nonlinear behavior of the inflated membrane structure due to wrinkling, the bending behavior of an inflated cylindrical boom made of a fabric membrane is observed at various pressure levels. Moreover, the envelope of a stratospheric airship is numerically modeled based on the thermoelastic properties of the fabric membrane obtained from experimental data, and the wrinkled deformed shape induced by a thermal load is analyzed.

Keywords: THERMOELASTIC BEHAVIORS; INFLATABLE STRUCTURES; FABRIC MEMBRANE; STRATOSPHERIC AIRSHIP; WRINKLING

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156855108X385285

Affiliations: 1: Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea, Present address: School of Aerospace and Mechanical Engineering, Korea Aerospace University, 200-1, H 2: P/T NVH Team, GM Daewoo Auto and Technology, 199-1 Cheongcheon-dong, Bupyeong-gu, Incheon 403-714, Korea 3: Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea;, Email: inlee@kaist.ac.kr

Publication date: 2008-11-01