Rheological model for compression of spacer fabrics

Autor: Prasenjit Barik, Bipin Kumar, Ravi Chattopadhyay
Rok vydání: 2015
Předmět:
Zdroj: Fibers and Polymers. 16:1554-1561
ISSN: 1875-0052
1229-9197
DOI: 10.1007/s12221-015-5277-y
Popis: Compression behavior of spacer fabrics are critical for their energy-absorption capabilities, and therefore are significant for many functional areas related to medical, protection, composites, etc. These paper further attempts to describe the compression profile of warp knitted spacer fabrics using rheological models. It has been observed from the compression load-deformation curve that the overall deformations in these materials include both elastic as well as flow deformation characteristics. To model this complex elastic-plastic deformation behavior, several mechanical models were developed and investigated using various series or parallel combinations of linear or nor-linear spring and dashpot elements. It was found that the three component model, compromises of Maxwell’s arm connected parallel with a non-linear spring, explained the experimental compression curves much better compared with Maxwell and Kelvin models. The model parameters can be used to describe several attributes of compression including initial modulus, plateau range, buckling strain and densification point.
Databáze: OpenAIRE
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