In the context of strain-energy-deployed space structures, material relaxation effects play a significant role in structures that are stowed for long durations, for example, in a space vehicle prior to launch. Here, the deployment of an ultrathin carbon fiber reinforced plastic (CFRP) tape spring is studied, with the aim of understanding how long-duration stowage affects its deployment behavior. Analytical modeling and experiments show that the deployment time increases predictably with stowage time and temperature, and analytical predictions are found to compare well with experiments. For cases where stress relaxation is excessive, the structure is shown to lose its ability to deploy autonomously.
Effects of Long-Term Stowage on the Deployment of Bistable Tape Springs
Contributed by the Applied Mechanics Division of ASME for publication in the JOURNAL OF APPLIED MECHANICS. Manuscript received May 14, 2015; final manuscript received September 15, 2015; published online November 9, 2015. Editor: Yonggang Huang.
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Brinkmeyer, A., Pellegrino, S., and Weaver, P. M. (November 9, 2015). "Effects of Long-Term Stowage on the Deployment of Bistable Tape Springs." ASME. J. Appl. Mech. January 2016; 83(1): 011008. https://doi.org/10.1115/1.4031618
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