MESO-SCALE NUMERICAL SIMULATION OF PROJECTILE PENETRATING CONCRETE BASED ON PARTICLE FLOW DISCRETE ELEMENT MODEL

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (4) : 162-169.

LIU Zhi-lin1, SUN Wei-wei2, WANG Xiao-ming1

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Abstract

The relationship between the penetration resistance and the velocity of penetrator in the process of projectile penetrating meso-scale concrete model is studied in this paper using the particle flow discrete element method. Concrete aggregates, whose sizes distribute according to the grading curve are randomly generated and placed according to the Monte Carlo method. In order to get the same effective mechanical properties as the macro-scale model, the parameters of the micro-scale model is determined by applying the parameter inversion technique to the uniaxial compression, splitting tensile, and biaxial compression tests using the particle flow discrete element micromechanical model. The influence of the aggregate, transition layer and mortar 3 phase material microscopic parameters on concrete response with respect to uniaxial compression strength as well as resistance stress on projectile with flat and conical nose are analyzed. The comparison of the numerical result of resistance stress calculated by the particle flow discrete element micromechanical model with the analytical result based on the cavity expansion theory shows that discrete element model has a good applicability and accuracy.

Key words

Discrete Element / Particle flow / Meso-scale model / Concrete / Penetration

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LIU Zhi-lin1, SUN Wei-wei2, WANG Xiao-ming1. MESO-SCALE NUMERICAL SIMULATION OF PROJECTILE PENETRATING CONCRETE BASED ON PARTICLE FLOW DISCRETE ELEMENT MODEL[J]. Journal of Vibration and Shock, 2016, 35(4): 162-169

References

[1] Cundall P A, Strack O D L. A discrete numerical model for graunlar assemblies [J]. Geotechnique,1979, 29(1): 47-65．
[2] Ghazvinian A, Sarfarazi V, Schubert W, et al. A study of the failure mechanism of planar non-persistent open joints using PFC2D[J]. Rock Mechanics Rock Engineering , 2012,45:677–693.
[3] 徐文杰，胡瑞林，王艳萍. 基于数字图像的非均质岩土材料细观结构PFC2D模型[J]. 煤炭学报,2007,32(4),0385-0389.
XU Wen-jie, HU Rui-lin, WANG Yan-ping. PFC2D model form esostructure of inhomogeneous geomaterial
based on digital image processing[J].Journal of China Coal Society, 2007,32(4):0385-0389.
[4] 丁秀丽,李耀旭,王新.基于数字图像的土石混合体力学性质的颗粒流模拟[J].岩石力学与工程学报,2010(3):477-484.
DING Xiu-li, LI Yao-xu, WANG Xin. Particle flow modeling mechanical properties of soil and rock mixtures based on digital image[J]. Chinese Journal of Rock Mechanics and Engineering, 2010(3):477-484.
[5] Qin Chuan, Zhang Chu-han. Numerical study of dynamic behavior of concrete by meso-scale particle element modeling[J]. International Journal of Impact Engineering, 2011(38):1011-1021.
[6] Walraven J C , Reinhardt H W. Theory and experiments on the mechanical behavior of cracks in plain and reinforced concrete subjected to shear loading [J] . Heron ,1991 ,26 (1A) :26 - 35.
[7] Itasca，PFC2D-Particle flow code in 2-dimensions，version 4. 0，user’s manual ［M］． Itasca Consulting Group，Inc．，2008．
[8] 东南大学，同济大学，天津大学.混凝土结构设计原理[M].北京：中国建筑工业出版社，2011
[9] 葛涛，王明洋. 坚硬岩石在强冲击载荷作用近区的性状研究[J].爆炸与冲击，2007,27(4):306-310.
GE Tao, WANG Ming-yang. Character near strong impact loading zone in hard rock [J]. Explosion and Shock Waves,2007,27(4):0306-0311.
[10] 秦川，武明鑫，张楚汉.混凝土冲击劈拉实验与细观离散元数值仿真[J].水力发电学报,2013,32(1):196-205.
QIN Chuan, WU Ming-xin, ZHANG Chu-han. Impact splitting tensile experiments of concrete and numerical modeling by meso-scale discrete elements[J]. Journal of Hydroelectric Engineering, 2013,32(1):196-205.
[11] 秦川，郭长青，张楚汉．基于背景网格的混凝土细观力学预处理方法［J］．水利学报，2011，42( 8) : 941-948．
QIN Chuan，GUO Chang-qing，ZHANG Chu-han． A pre-processing scheme based on background grid approach for meso-concrete mechanics ［J］． Journal of Hydraulic Engineering，2011，42( 8) : 941-948．
[12] 秦川．基于细观力学的混凝土动态特性研究［D］．北京: 清华大学，2011．
[13] Luk V K, Forrestal M J. An empirical equation for penetration depth of ogive-nose projectile into concrete targets[J]. International Journal of Impact Engineering 1994, 15(4): 395-405.
[14] 刘志林,孙巍巍,王晓鸣等.基于盖帽模型的混凝土动态球型空腔膨胀模型和侵彻阻力分析[J].兵工学报，2015，(录用待刊).
LIU Zhi-lin, SUN Wei-wei, WANG Xiao-ming, et al. Research on spherical cavity-expansion model for concrete targets based on cap model and penetration resistance analysis[J].Acta Armamentarii,2015,(in press).
[15] Forrestal M J,Tzou D Y. A spherical cavity-expansion penetration model for concrete targets [J]. International Journal of Solids and Structures, 1997, 34:4127-4146.
[16] 李志康,黄风雷.考虑混凝土孔隙压实效应的球形空腔膨胀理论[J].岩土力学,2010(5):1481-1485.
LI Zhi-kang, HUANG Feng-lei. A spherical cavity expansion theory of concrete considering voids compacted effects[J]. Rock and Soil Mechanics, 2010(5) :1481-1485. (in Chinese)
[17] 王明洋，郑大亮，钱七虎. 弹体对混凝土介质侵彻、贯穿的比例换算关系[J].爆炸与冲击, 2004, 24(2):0108-0115.
WANG Ming-yang, ZHENG Da-liang, QIAN Qi-hu. The scaling problems of penetration and perforationfor projectile into concrete media[J].Explosion and Shock Wave, 2004, 24(2):0108-0115.