Mechanical Engineering Journal
Online ISSN : 2187-9745
ISSN-L : 2187-9745
Computational Mechanics
Parameterization, statistical measurement and numerical modeling of fluctuated meso/micro-structure of plain woven fabric GFRP laminate for quantification of geometrical variability
Kohei HAGIWARAShintaro ISHIJIMANaoki TAKANOAkio OHTANIAsami NAKAI
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2017 Volume 4 Issue 4 Pages 17-00053

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Abstract

This paper proposed a stochastic multiscale modeling method by parameterization and quantification of the fluctuated meso/micro-structure of plain woven fabric glass fiber reinforced plastics (GFRP) fabricated by hand layup. The experimental results of static tensile tests of 25 specimens made by 5 persons showed large scattering and the macroscopic parameters could not enough explain the variability. Hence, the meso/micro-structure based stochastic multiscale method was presented first, and its geometrical modeling technique was deeply studied in this paper. By the observation of the specimens, fluctuated geometrical features were parameterized. The defined parameters were statistically measured. The generated 2D models could express the realistic meso/micro-structures. It should be noted that the nesting in laminated composites and the distributed fiber volume fraction were included in the proposed modeling method.

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© 2017 The Japan Society of Mechanical Engineers
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