Deng, X. and Pellegrino, S. (2010) Wrinkling of Orthotropic Viscoelastic Membranes. In: 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, April 12-15, 2010, Orlando, FL. http://resolver.caltech.edu/CaltechAUTHORS:20110223-131222888
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This paper presents a simplified simulation technique for orthotropic viscoelastic films. Wrinkling is detected by a combined stress-strain criterion and an iterative scheme searches for the wrinkle angle using a pseudo-elastic material stiffness matrix based on a nonlinear viscoelastic constitutive model. This simplified model has been implemented in ABAQUS/Explicit and is able to compute the behavior of a membrane structure by superposition of a small number of response increments. The model has been tested against a published solution for a time-independent isotropic membrane under simple shear and also against experimental results on StratoFilm 420 under simple shear.
|Item Type:||Conference or Workshop Item (Paper)|
|Additional Information:||© 2010 by X. Deng and S. Pellegrino. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. We thank the NASA Super-Pressure Balloon team for their contributions to this research. In particular, Dr Loren Seely (Aerostar International) has provided film samples, Dr David Wakefield (Tensys Dynamics Ltd) and Dr Jim Rand (Winzen Engineering, Inc.) have helped with many comments. This research was supported by the NASA Balloon Program Office (contract monitor Danny Ball).|
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|Deposited By:||Tony Diaz|
|Deposited On:||23 Feb 2011 21:43|
|Last Modified:||07 Apr 2017 23:05|
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