کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4922363 1430183 2017 38 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Meso-macro modelling of anisotropic metallic composites within the framework of multisurface plasticity
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Meso-macro modelling of anisotropic metallic composites within the framework of multisurface plasticity
چکیده انگلیسی
This paper discusses a rate-independent elastoplastic constitutive model for fibre reinforced composite materials. The type of composite material considered here is tungsten fibre reinforced copper (W/Cu). The constitutive framework is based on multisurface plasticity and is derived in a thermodynamically consistent manner. Plastic anisotropy is modelled based on the concept of structural tensors by developing three different yield functions and parameterized consistency conditions for three different loading scenarios in the plane of the composite sheet. Additionally, the evolution equations are integrated using the unconditionally stable backward Euler method. Also the commonly used elastic predictor-plastic corrector method is employed to update the internal variables. Furthermore, to determine the parameters of the constitutive model as well as for validation, a finite element model of a plain weave repeating unit cell (RUC) is set-up. Finally, the applicability of the constitutive model is demonstrated by performing a simulation of drawing a thin circular plate with a hole and a cylindrical roof subjected to a line load.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 120, 1 August 2017, Pages 186-198
نویسندگان
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