کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
265620 504320 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling the influence of the fibre structure on the structural behaviour of flowable fibre-reinforced concrete
ترجمه فارسی عنوان
مدل سازی تاثیر ساختار فیبر بر رفتار ساختاری بتن مسلح فیبری قابل جریان
کلمات کلیدی
فایبر بتن، عدم انحراف ساختار فیبر، تینر جهت گیری فیبر، مقدار کسر حجم فیبر، مدل سازی عناصر محدود غیر خطی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی


• A modelling approach is devised that takes into account the fibre structure of FRC.
• The approach makes use of a single-phase material definition.
• It was validated by studying the mechanical behaviour of two flowable FRC beams.
• It could explain the large impact of the fibre structure experimentally observed.

This paper presents a modelling approach for fibre-reinforced concrete elements in which the fibre structure is taken into account in simulating the mechanical behaviour. The fibre structure is discretized in volumes and two fibre parameters are defined for each discrete volume: the dominant fibre orientation and the fibre volume fraction. These parameters are incorporated in a numerical model that uses a single-phase material definition dependent on the fibre parameters. The first part of this paper describes the methodology and constitutive modelling. The second part addresses the simulation of two beams that exhibited large differences in bending because of uneven fibre distribution. Data on the fibre structure was obtained using Computed Tomography scanning. The modelling approach captured the large difference in the flexural response of the two beams and provided an adequate prediction of the location and propagation of the critical cracks.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Structures - Volume 124, 1 October 2016, Pages 186–195
نویسندگان
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