Abstract
The temperature and time-dependent behaviors of thin-walled high-strain composites including structural nonlinearity are experimentally and numerically investigated. The high-strain composites using woven fabric fibers with heat-softenable resin of shape memory polymers are fabricated. The numerical model based on the elastic properties of the woven fabric fiber considering its actual fabric geometry and the thermoviscoelastic properties of the shape memory polymer resin is developed. Experimental tests of the high-strain composite specimen are analyzed to acquire the parameters needed for its model. A thin-walled high-strain composite structure, which can be flexibly folded into an arbitrary configuration by heating, is fabricated. Furthermore, its folding and unfolding viscoelastic behaviors at elevated temperature are investigated for application in deployable space structures.
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