| 弹丸侵彻混凝土靶板破坏过程的近场动力学模拟 |
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| 引用本文： | 沈峰,章青,顾鑫.弹丸侵彻混凝土靶板破坏过程的近场动力学模拟[J].重庆大学学报(自然科学版),2019,42(1):64-69. |
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| 作者姓名： | 沈峰 章青 顾鑫 |
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| 作者单位： | 苏州科技大学 土木工程学院 ,江苏 苏州,215000;河海大学 工程力学系 ,江苏 南京,211100 |
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| 基金项目： | 国家自然科学基金资助项目（51709194，11672101）；国家重点研发计划资助项目（2017YFC1502603）；江苏省自然科学基金项目（BK20151493）。 |
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| 摘 要： | 为了精确描述弹丸侵彻混凝土靶板的破坏过程及其演化规律,文中采用基于非局部相互作用思想与空间积分方程建模的键型近场动力学(peridynamics,PD)方法,改进了近场动力学本构力核函数,对弹丸侵彻下混凝土靶板的动态破坏过程进行仿真分析。模拟了弹丸侵彻下混凝土靶板破坏的全过程,探讨了不同冲击速度下混凝土靶板的破坏特征,较好地描述了其损伤累积和渐进破坏过程。
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| 关 键 词： | 近场动力学 混凝土板 侵彻 数值模拟 |
| 收稿时间： | 2018/6/13 0:00:00 |
Peridynamics modeling for projectile penetrating into concrete |
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| SHEN Feng,ZHANG Qing and GU Xin.Peridynamics modeling for projectile penetrating into concrete[J].Journal of Chongqing University(Natural Science Edition),2019,42(1):64-69. |
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| Authors: | SHEN Feng ZHANG Qing and GU Xin |
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| Institution: | School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215000, Jiangsu, P. R. China,Department of Engineering Mechanics, Hohai University, Nanjing 211100, Jiangsu, P. R. China and Department of Engineering Mechanics, Hohai University, Nanjing 211100, Jiangsu, P. R. China |
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| Abstract: | Peridynamics(PD) is a continuum theory based on the idea of non-local interaction and spatial integral equation modelling. In order to accurately describe the failure process and evolution of the projectile penetrating the concrete target plate, the non-local PD model is proposed. The modified PD constitutive model is used to simulate the dynamic failure process of the projectile penetrating the concrete target plate and the failure characteristics of concrete target plate under different impact velocities are discussed. The process of concrete damage accumulation and progressive failure is obtained. |
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| Keywords: | peridynamics concrete penetration numerical simulation |
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