کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5190346 | 1381203 | 2007 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cyclic viscoplasticity of solid polymers: The effects of strain rate and amplitude of deformation
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Observations are reported on polypropylene random copolymer in uniaxial cyclic tensile tests with various strain rates (ranging from 1.7 Ã 10â4 to 8.3 Ã 10â3 sâ1). Each cycle of deformation involves tension up to the maximal strain εmax (from 0.05 to 0.20) and retraction down to the zero stress. The study focuses on deformation programs with 10-50 cycles in each test. A constitutive model is derived for the viscoplastic behavior of a solid polymer at three-dimensional cyclic deformations with small strains. Material constants in the stress-strain relations are found by fitting the experimental data. Good agreement is demonstrated between the observations and the results of numerical simulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 48, Issue 10, 4 May 2007, Pages 3003-3012
Journal: Polymer - Volume 48, Issue 10, 4 May 2007, Pages 3003-3012
نویسندگان
A.D. Drozdov, J.deC. Christiansen,