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Numerical Estimation of the Effective Mechanical Properties (EMP) of Steel AISI 4340 Fiber-Reinforced Concrete | ||
| Mechanics of Advanced Composite Structures | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 28 خرداد 1405 اصل مقاله (1.07 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/macs.2026.35232.1725 | ||
| نویسنده | ||
| Nasserdine Oudni* | ||
| Department of Civil Engineering, Faculty of technology, university of Bejaia, Algeria | ||
| تاریخ دریافت: 27 مهر 1403، تاریخ بازنگری: 01 اردیبهشت 1405، تاریخ پذیرش: 28 خرداد 1405 | ||
| چکیده | ||
| This study aims to estimate the effective mechanical properties (EMP) of a composite material consisting of two phases: a concrete matrix and randomly distributed cylindrical fiber reinforcements. To determine the composite’s effective mechanical properties, several key parameters are considered, including the fiber volume fraction, fiber geometry (expressed as the length-to-diameter ratio), and the void volume fraction. The voids are modeled as spherical inclusions, randomly dispersed within the matrix phase only, with strict non-intersection constraints ensuring they do not overlap or touch the fibers. This configuration reflects realistic entrapped air porosity while preserving the integrity of the fiber–matrix interface. The effective elastic properties are estimated using a numerical homogenization procedure based on the finite element method (FEM) and the Representative Volume Element (RVE) concept. Periodic boundary conditions (PBC) are applied to ensure representativeness, and a progressive mesh refinement strategy is employed—finer around the inclusions—to balance accuracy and computational efficiency. The 3D fiber distributions are generated using a custom Python 3.9 script that enforces non-overlapping conditions between fibers, thereby preventing interpenetration during RVE construction. | ||
| کلیدواژهها | ||
| Homogenization؛ Composite؛ Effective Properties؛ RVE؛ Random distribution | ||
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آمار تعداد مشاهده مقاله: 39 تعداد دریافت فایل اصل مقاله: 75 |
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