A numerical study on concrete subjected to large strains, high strain rates, and high pressures.

碩士 === 國防大學中正理工學院 === 軍事工程研究所 === 96 === This study is to investigate the behavior and the failure mechanism of concrete subjected to large strains, high strain rates and high pressures by using numerical simulations. A famous finite element software, LS-DYNA, is adopted, and four different concrete...

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Main Authors: Chih-Chien Lin, 林志謙
Other Authors: Hsiao-Lin Cheng
Format: Others
Language:zh-TW
Published: 2008
Online Access:http://ndltd.ncl.edu.tw/handle/02536217597176246323
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spelling ndltd-TW-096CCIT05880062015-10-13T11:31:57Z http://ndltd.ncl.edu.tw/handle/02536217597176246323 A numerical study on concrete subjected to large strains, high strain rates, and high pressures. 大應變、高應變率及高壓下混凝土材料模型之數值研究 Chih-Chien Lin 林志謙 碩士 國防大學中正理工學院 軍事工程研究所 96 This study is to investigate the behavior and the failure mechanism of concrete subjected to large strains, high strain rates and high pressures by using numerical simulations. A famous finite element software, LS-DYNA, is adopted, and four different concrete models (MAT16, MAT72R3, MAT111, MAT159) are used in the study. By performing the convergence analysis and considering the effects of the penalty function and erosion coefficient of elements on the residual velocity of the projectile, a numerical model is calibrated, and is then verified, based on the experimental results. With the proposed numerical model, the effects of the concrete scabbing, ballistic limit of the projectile and the rebar in terms of the residual velocity of the projectile are also studied. Numerical results show that the proposed model effectively and fairly forecasts the behavior and the failure mechanism of concrete subjected to large strains, high strain rates and high pressures. Key Words: Concrete Model; Erosion Criteria; Numerical Simulation Hsiao-Lin Cheng 成曉琳 2008 學位論文 ; thesis 119 zh-TW
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language zh-TW
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description 碩士 === 國防大學中正理工學院 === 軍事工程研究所 === 96 === This study is to investigate the behavior and the failure mechanism of concrete subjected to large strains, high strain rates and high pressures by using numerical simulations. A famous finite element software, LS-DYNA, is adopted, and four different concrete models (MAT16, MAT72R3, MAT111, MAT159) are used in the study. By performing the convergence analysis and considering the effects of the penalty function and erosion coefficient of elements on the residual velocity of the projectile, a numerical model is calibrated, and is then verified, based on the experimental results. With the proposed numerical model, the effects of the concrete scabbing, ballistic limit of the projectile and the rebar in terms of the residual velocity of the projectile are also studied. Numerical results show that the proposed model effectively and fairly forecasts the behavior and the failure mechanism of concrete subjected to large strains, high strain rates and high pressures. Key Words: Concrete Model; Erosion Criteria; Numerical Simulation
author2 Hsiao-Lin Cheng
author_facet Hsiao-Lin Cheng
Chih-Chien Lin
林志謙
author Chih-Chien Lin
林志謙
spellingShingle Chih-Chien Lin
林志謙
A numerical study on concrete subjected to large strains, high strain rates, and high pressures.
author_sort Chih-Chien Lin
title A numerical study on concrete subjected to large strains, high strain rates, and high pressures.
title_short A numerical study on concrete subjected to large strains, high strain rates, and high pressures.
title_full A numerical study on concrete subjected to large strains, high strain rates, and high pressures.
title_fullStr A numerical study on concrete subjected to large strains, high strain rates, and high pressures.
title_full_unstemmed A numerical study on concrete subjected to large strains, high strain rates, and high pressures.
title_sort numerical study on concrete subjected to large strains, high strain rates, and high pressures.
publishDate 2008
url http://ndltd.ncl.edu.tw/handle/02536217597176246323
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