کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7172925 | 1464034 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simulation of wind-borne missile impact using Lagrangian and Smooth Particle Hydrodynamics formulations
ترجمه فارسی عنوان
شبیه سازی موشک باد موشکی با فرمولاسیون هیدرودینامیک ذرات لاگرانژی و صاف
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی مکانیک
چکیده انگلیسی
Four impact tests on reinforced concrete panels, conducted by the Electric Power Research Institute (EPRI), were simulated using the Lagrangian and Smooth Particle Hydrodynamics (SPH) formulations to validate a numerical model. These tests involved 305â¯mm (12 in.), 457â¯mm (18 in.), and 610â¯mm (24 in.) thick reinforced concrete panels impacted by 305â¯mm (12 in.) diameter Schedule 40 pipes, with impact velocities ranging from 30â¯m/s (98â¯ft./s) to 62â¯m/s (202â¯ft./s). The Lagrangian formulation reasonably predicted panel response and local damage (e.g., perforation, front- and back-face crater diameters, and scabbing) to the 305â¯mm (12 in.) panels but predicted less well the results of tests on thicker panels. This prompted study of the particle-based method SPH formulation: the axisymmetric formulation was used to reduce computational demand. The Grid Convergence Index (GCI) was used to identify a converged mesh for the SPH simulations. The SPH model reasonably predicted panel response and local damage for the range of panel thicknesses chosen for this study but the lack of information and metadata from the experiments poses a challenge to fully validate a numerical model for impact analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Impact Engineering - Volume 117, July 2018, Pages 1-12
Journal: International Journal of Impact Engineering - Volume 117, July 2018, Pages 1-12
نویسندگان
Brian Terranova, Andrew Whittaker, Len Schwer,