کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
245724 1428228 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic analysis of a soft-contact problem using viscoelastic and fractional-elastic rheological models
ترجمه فارسی عنوان
تجزیه و تحلیل دینامیکی یک مشکل تماس نرم با استفاده از مدل های رئولوژیکی ویزو کلاسیک و کسری الاستیک
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی

The paper presents mathematical formulation of a dynamic soft-contact problem consisting of a material point impacting rheological structures. Two different models were analyzed. The first model concerns a viscoelastic structure while the second one applies to the so-called fractional-elastic scheme. In both cases the formulation of the problem needs the notion of variational inequalities describing unilateral constraints. Moreover, the fractional-elastic model contains an element defined via fractional derivatives (spring-pot) that complicates the numerical solution. Thanks to the methods used in this paper, both problems were described mathematically applying appropriate systems of algebraic-differential equations. The solution of the fractional-elastic problem involving a fractional-differential equation (FDE) was obtained with the use of time-discretization schemes proposed in the literature. Selected numerical results of the initial-value problem solution, modelling a material point falling freely and impacting the rheological structures were presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Archives of Civil and Mechanical Engineering - Volume 15, Issue 1, January 2015, Pages 286–291
نویسندگان
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