Analytical and numerical modeling of erosive projectiles into steel fiber reinforced concrete target
Subject Areas : Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering
مهدی
هدایتیان
1
(دانشجوی دکترای مهندسی مکانیک، دانشگاه آزاد اسلامی واحد اراک، اراک)
خداداد
وواحدی
2
(دانشیار مهندسی مکانیک، دانشگاه امام حسین، تهران)
Keywords: penetration, Erosive Projectiles, Reinforced Concrete, Steel fiber, Impact Resistance,
Abstract :
In this paper, modeling of high speed projectiles with different nose shapes, penetrating into steel fiber reinforced concrete is investigated. This is a novel study because it considers the length to diameter ratio of steel fiber as well as projectile length to diameter ratio and volume fraction of fiber used in concrete matrix on the impact resistance of steel fiber reinforced concrete fibers at high speeds. Numerical simulation is used using LS-DYNA explicit code. The projectiles have an approximate mass of 45 (gr) and their velocities are about 2500 (m/s) penetrating into steel fiber reinforced concrete panel with volume fraction of 1.0%, 1.5% and 2.0%. In this article the exact behavior of steel fiber reinforced concrete confronting metallic projectiles at high speed is predicted. The results of the simulations are compared with experimental work of other investigators and, the results show that ogive nose projectiles are more efficient than other projectiles. In other words, by increasing the projectile length to diameter ratio from 0.5 to 0.9, for flat, hemispherical and ogive projectiles their residual velocities are increased. Also, it is shown that by increasing the volume fraction of steel fibers in concrete matrix, damage of top surface damage is reduced dramatically. The analytical model presented in this paper considers the speed variations of the projectile during the penetration process into steel fiber reinforced concrete is an important achievements this respect.
[1] Jianhua W., Jun L., Haiping Y., The study on steel Fiber reinforced concrete under dynamic compression by damage mechanics method, Journal of Chemical and Pharmaceutical Research, 6, 2014, pp. 1759-1767.
[2] Miamoto A., Nakamura H., Visualization of impact failure behavior for RC slab, Proceedings of 3rd International Conference on Concrete under Severe Condition, UBC, 2001.
[3] Gao J., Sun W., Morino K., Mechanical properties of steel fiber-reinforced, high-strength, lightweight concrete, Cement and Concrete Composites, 19, 1997, pp. 307–313.
[4] Shahid I., Ahsan A., Holschemacher K., Thomas A., Mechanical properties of steel fiber reinforced high strength lightweight self-compacting concrete (SHLSCC), Construction and Building Materials. 98, 2015, pp. 325–333.
[5] P.S. Song, S. Hwang, Mechanical properties of high-strength steel fiber-reinforced concrete, Construction and Building Materials. 18, 2004, pp. 669–673.
[6] Farnam Y., Experimental and simulation study of the impact of high strength fibrous concrete panels, PhD Thesis, Tehran University, Tehran, 2010. (In Persian)
[7] Tokgoz S., Dundar C., Tanrikulu A.K., Experimental behavior of steel fiber high strength reinforced concrete and composite columns, Journal of Constructional Steel Research. 74, 2012, pp. 98-107.
[8] Murali G., Santhi A. S., Mohan Ganesh G., Empirical Relationship between the Impact Energy and Compressive Strength for Fiber Reinforced Concrete, Journal of Scientific & Industrial Research, 73, 2014, pp. 469-473.
[9] Zhang X.X., Abd Elazim A.M., Ruiz G., Yu R.C., Fracture behavior of steel Fibre-reinforced concrete at a wide range of loading rates, International Journal of Impact Engineering, 71, 2014, pp. 89-96.
[10] Sovják R., Vavřiník T., Máca P., Zatloukal J., Konvalinka P., Experimental Investigation of Ultra-high Performance Fiber Reinforced Concrete Slabs Subjected to Deformable Projectile Impact, Procedia Engineering, 65, 2013, pp. 120–125.
[11] Luo X., Sun W., Chan Y.N., Characteristics of high-performance steel fiber-reinforced concrete subject to high velocity impact, Cement and Concrete Research, 30, 2013, pp. 907–914.
[12] Huang F., Wu H., Jin Q., Zhang Q., A numerical simulation on the perforation of reinforced concrete targets, International Journal of Impact Engineering, 32, 2005, pp. 173–187.
[13] Li Q. M., Reid S. R., Wen H. M., Telford A. R., Local impact effects of hard missiles on concrete targets, International Journal of Impact Engineering, 32, 2005, pp. 224-284.
[14] Leppanen C., Concrete subject to fragment impacts, PhD Thesis, Chalmer University of technology, Goteborg, Sweden, 2004.
[15] Wen H.M., Xian Y.X., A unified approach for concrete impact, International Journal of Impact Engineering, 77, 2015, pp. 84-96.
[16] Nataraja M.C., Dhang N., Gupta A.P., Stress–strain curves for steel-fiber reinforced concrete under compression, Cement and Concrete Composites. 21, 1999, pp. 383–390.
[17] Quan X., Birnbaum N. K., Cowler M. S., Gerber B. I., Clegge R. A., Hayhurst C. J., Numerical simulation of structural deformation under shock and impact loads using a coupled multi- solver approach, 5 th Asia- Pacific Conference on Shock and Impact Loads on Structures, 2003.
[18] Hallquist J. O., LS-DYNA Theory Manual, Livermore Software Technology Corporation, California, March 2006.
[19] Feli S., Bakhtiar M., Determination of Compressive Stress of Metallic Materials Based on Impact Test, Mech. Aerospace J, 8, 2012, pp. 43- 54.
[20] Teng L., T. Chu, Yi. An., Chang, Fwu. An., Shen, Bor. Cherng. and Cheng, Ding. Shing., Development and validation of numerical model of steel Fiber reinforced concrete for high-velocity impact, Computational Materials Science, 42, 2008, pp. 90–99.
[21] Marsh S. P., LASL shock hugoniot data, University of California, 1980.
[22] Gebbeken N., Greulich S., Pietzsch A., Hugoniot properties for concrete determined by full-scale detonation experiments and flyer-plate-impact tests, International Journal of Impact Engineering, 32, 2006, pp. 2017-2031.