کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7174903 1465590 2016 34 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An Eulerian method for finite deformation anisotropic damage with application to high strain-rate problems
ترجمه فارسی عنوان
یک روش یولر برای آسیب ناشی از ضریب تغییر شکل محدود با استفاده از مشکلات با شدت بالا
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
This paper is dedicated to establishing a thermodynamically compatible Eulerian theoretical framework for elastoplastic anisotropically damaging materials, that is applicable to high strain rate and strongly compressible problems. The proposed model comprises a system of thermodynamically compatible balance laws based upon hyperelastic-inelastic theory: the mechanical conservation laws are supplemented by kinematic evolution equations for material deformation gradients, which can be written in conservative form. The formulation is rotationally invariant and hyperbolic, with a determinable characteristic structure. An operator split approach is proposed for integrating the governing constitutive models for three-dimensional Cauchy problems, in conjunction with a ghost material numerical method to resolve internal Dirichlet boundaries. Such methods naturally allow the generation of new internal boundaries making them ideal for simulating fragmenting materials and macroscale fracture. A remarkable feature of the proposed approach is that the overall complexity compares favourably with that of the model for elastoplastic deformations only. The simulation of expanding ring and flyer plate experiments are chosen to demonstrate the effectiveness of the proposed approach.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Plasticity - Volume 83, August 2016, Pages 225-251
نویسندگان
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