کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1561694 1513945 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Response of semi-crystalline thermoplastic polymers to dynamic loading: A finite element study
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Response of semi-crystalline thermoplastic polymers to dynamic loading: A finite element study
چکیده انگلیسی

Mechanical behaviours and properties of polymers under dynamic loading conditions differ significantly from those under quasi-static loads. Consequently, for dynamic numerical analysis, a linear elastic/hyperelastic material model has its limitations and can produce inaccurate results. In order to obtain an adequate response to high-speed loading in simulations, a viscoelastic material model has been developed. Simulations with such a model were performed using the finite-element software Abaqus and employed to calculate the Prony series, characterising the material’s time-dependent mechanical behaviour. The initial material models, developed starting from creep and Dynamic Mechanical Analysis test data, failed to provide adequate results; hence, a customised relaxation function was suggested based on experimental tests at different strain rates. The developed material model was validated in static and dynamic simulations with good results for loads below the yield point.


► Material model to capture viscoelastic behaviour.
► Viscoelastic model from creep/DMA results determines inaccurate results..
► Relaxation curve from strain-rate dependent data.
► Validation in static and dynamic loadings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 64, November 2012, Pages 116–121
نویسندگان
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