کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7889838 1509863 2018 38 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear hyperviscoelastic modelling of intra-ply deformation behaviour in finite element forming simulation of continuously fibre-reinforced thermoplastics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Nonlinear hyperviscoelastic modelling of intra-ply deformation behaviour in finite element forming simulation of continuously fibre-reinforced thermoplastics
چکیده انگلیسی
A nonlinear hyperviscoelastic approach for modelling rate-dependent intra-ply deformation behaviour in FE forming simulation of continuously fibre-reinforced polymers is presented. This approach follows either a Voigt-Kelvin approach or a generalized Maxwell approach based on a multiplicative decomposition of the deformation gradient. The constitutive equations are implemented in a “Discrete Kirchhoff Triangle” shell formulation within an Abaqus user-element, including a physical decoupling of membrane and bending behaviour. The approach is parameterized for a thermoplastic UD-tape (PA6-CF) at different strain-rates and temperatures above the crystallization temperature and applied to iso-thermal forming simulation. Parametrization results reveal that only the generalized Maxwell approach represents the whole material characteristic. Moreover, a difference in forming behaviour is observed for the investigated temperatures and constitutive equations. The difference, however, is small, which reveals that iso-thermal forming simulation following a Voigt-Kelvin approach is suitable for prediction of forming behaviour within a suitable process window, where isothermal conditions are assumable.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Part A: Applied Science and Manufacturing - Volume 109, June 2018, Pages 585-596
نویسندگان
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