Modeling, analysis and experiments of inter yarn compaction effects in braided composite actuators

Content Provider	Semantic Scholar
Author	Zhang, Zhiye Philen, Michael
Copyright Year	2013
Abstract	Braided composite actuators are pressure-driven muscle-like actuators capable of large displacements as well as large blocking forces. Braided composite actuators can also exhibit a large change in effective stiffness through simple valve control when the working fluid has a high bulk modulus. This is due to the stiff fiber reinforcement of the braided sleeve and the high bulk modulus of the fluid resisting the volume change when a load is applied in the closed-valve condition. Several analytical models have been previously developed that capture the geometrical and material nonlinearities of the composite actuator, the compliance of the inner liner, and entrapped air in the fluid. This article focuses on inter yarn compaction in the fiber sleeve, which is shown to reduce the effective closed-valve stiffness. In this article, a new analytical model that considers inter fiber yarn compaction, fiber extension and entrapped air effect as well as the material and geometric nonlinearities is developed. Analysis and experimental results demonstrate that the new compaction model can improve the prediction of the response behavior of the actuator.
Starting Page	3211
Ending Page	3225
Page Count	15
File Format	PDF HTM / HTML
DOI	10.1177/0021998312463455
Alternate Webpage(s)	https://theses.lib.vt.edu/theses/available/etd-10012012-012241/unrestricted/Zhang_Z_D_2012.pdf
Alternate Webpage(s)	https://doi.org/10.1177/0021998312463455
Volume Number	47
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article