کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11027827 1666153 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonlinear visco-elasticity of soft tissues under cyclic deformations
ترجمه فارسی عنوان
ویسکوزو الاستیسیته غیرخطی بافت نرم در زیر تغییرات سیکل
کلمات کلیدی
الاستیک کششی و ویسکوزیته انعطاف پذیر، تغییر شکل سیکلی، هیسترزیس، زندگی بافت فیبروتیک،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
Nowadays, new experimental set-ups allow to determine the strains which appear in biological tissues under small controlled solicitations as stretch (uniaxial and bi-axial) or shear. Automatically recorded by camera, these data exhibit hysteresis even for very slow and weak forcing. The aim of this work is to revisit the modeling of hyper-elasticity and visco-elasticity for tissues with a rather disordered structure. Despite the weakness of the imposed stretch values, strong nonlinearities are observed for these tissues that polymeric gels do not show under the same conditions. Various classical models have been tested on surgical mammary tissues and it turns out that the simplest Neo-Hookean model with its viscous counter-part explain perfectly the data. Viscosity and elasticity compete quite equivalently showing that, in the selected range of forcing values, visco-elasticity cannot be discarded.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Non-Linear Mechanics - Volume 106, November 2018, Pages 238-244
نویسندگان
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