Damage modeling of ballistic penetration and impact behavior of concrete panel under low and high velocities  

作　　者：Chahmi Oucif J.S.Kalyana Rama K.Shankar Ram Farid Abed 

机构地区：[1]Institute of Structural Mechanics(ISM),Bauhaus-Universitat Weimar,Marienstraße 15,D-99423,Weimar,Germany [2]Department of Civil Engineering,BITS Pilani-Hyderabad Campus,Hyderabad,500072,India [3]Department of Civil Engineering,Vignana Bharathi Institute of Technology,Hyderabad,501301,India [4]Department of Civil Engineering,University of California,Berkeley,Berkeley,CA,United States [5]Department of Civil Engineering,American University of Sharjah,P.O.Box 26666,United Arab Emirates

出　　处：《Defence Technology（防务技术）》2021年第1期202-211,共10页Defence Technology

摘　　要：This work presents a numerical simulation of ballistic penetration and high velocity impact behavior of plain and reinforced concrete panels.This paper is divided into two parts.The first part consists of numerical modeling of reinforced concrete panel penetrated with a spherical projectile using concrete damage plasticity(CDP)model,while the second part focuses on the comparison of CDP model and Johnson-Holmquist-2(JH-2)damage model and their ability to describe the behavior of concrete panel under impact loads.The first and second concrete panels have dimensions of 1500 mm1500 mm150 mm and 675 mm675 mm200 mm,respectively,and are meshed using 8-node hexahedron solid elements.The impact object used in the first part is a spherical projectile of 150 mm diameter,while in the second part steel projectile of a length of 152 mm is modeled as rigid element.Failure and scabbing characteristics are studied in the first part.In the second part,the comparison results are presented as damage contours,kinetic energy of projectile and internal energy of the concrete.The results revealed a severe fracture of the panel and high kinetic energy of the projectile using CDP model comparing to the JH-2 model.In addition,the internal energy of concrete using CDP model was found to be less comparing to the JH-2 model.

关 键 词：Johnson-Holmquist-2 Concrete damage plasticity Concrete panel DAMAGE Impact loads 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程] TU528[建筑科学—建筑技术科学]