کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
821526 | 906762 | 2009 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Characterizing and modeling the non-linear viscoelastic tensile deformation of a glass fiber reinforced polypropylene Characterizing and modeling the non-linear viscoelastic tensile deformation of a glass fiber reinforced polypropylene](/preview/png/821526.png)
On the basis of comprehensive experimental investigations on a long glass fiber reinforced polypropylene (PP-LGF) a novel rheological material model is developed. It features a decomposition of the stress into a time independent quasi-static and a time and strain dependent viscous contribution. Furthermore it allows for plastic deformations starting from the very beginning of straining and is thereby able to reproduce the absence of a purely linear elastic domain going along with the nonexistence of a defined yield point, characteristic for many fiber reinforced thermoplastic polymers. In order to approach the true quasi-static material behavior, various tensile tests were carried out. The viscous material behavior was deduced from a series of stress relaxation experiments and is described by Eyring’s equation with strain dependent viscosity parameters.
Journal: Composites Science and Technology - Volume 69, Issue 14, November 2009, Pages 2460–2466