摘要伴随有限元技术的超速发展，在计算机上对侵彻问题进行数值模拟已经越来越广泛，并且越来越多地应用于混凝土侵彻问题的领域。本论文的主要是在阅览了大量论文和文献的基础上，使用比较成熟的有限元仿真软件ANSYS/LS-DYNA，针对侵彻混凝土靶板问题进行数值模拟。主要任务如下：60671

1.分析弹体在侵彻混凝土问题上的特点，讨论混凝土侵彻问题研究的现状与历史，为后续工作的开展提供基础。

2.选取侵彻角度和侵彻速度两项参数，建立有限元模型对高速弹侵彻混凝土靶板问题进行数值模拟，分析各个参数对混凝土靶板侵彻的影响及侵彻过程中弹体的动态响应，并分析了各个参数影响质量损失大小的关系。

3. 研究了众多的经验公式，并选取具有代表性的经验公式，在公式的允许范围内，利用 H-J-C 本构模型对其进行数值模拟分析。将实验结果与数值计算所得的结果进行对比，验证经验公式的可靠性，同时也可说明数值模拟在这类问题上的重要参考意义。

    最后，总结本文的主要工作，并讨论研究的不足之处及今后的发展方向。

毕业论文关键词   高速弹体  侵彻  混凝土  ANSYS/LS-DYNA  数值模拟

毕业设计说明书（论文）外文摘要

Title    Study on the mass loss of High penetrating projectile   With Numerical Simulation               

Abstract

With the rapid development of Finite Element Analysis Method, numerical simulations on computers are widely used in the field of penetration against concrete targets as an effective approach. On the base of many references, the paper makes numerical simulations about penetrating to concrete using ANSYS/LS-DYNA, which is a well-developed finite element analysis application. The main task of this paper can be summarized as follows: 

1.The paper makes a general introduction about the penetration against concrete targets in the past and at present, and this paper also lays a foundation for the following work. 

2.The numerical simulations of the penetration against concrete targets are performed with the velocity of the projectiles and impact angle，the relationship among the effects of the parameters is analyzed.

3.This paper makes a survey of many empirical formulas, and numerical simulations are performed in the range of typical formulas with the constitutive model H-J-C. The results of the simulations are almost the same as those of the formulas, so the simulations validated the results of the empirical formula. The method of simulating is proved to be useful as a reference.

Finally，this paper summarizes the main work and discuss gaps and development in the future.

Keywords  High-speed projectile  penetration  concrete  ANSYS/LS-DYNA numerical simulation

1  绪论 1

1.1  引言 1

1.2  国内外研究现状 1

1.3  本文的研究目的、手段及主要内容 8

1.4  本章小结 9

2  混凝土靶板侵彻问题分析 10

2.1  引言 10

2.2  混凝土侵彻特点 10

2.3  混凝土的计算本构模型 10

2.4  ANSYS/LS-DYNA程序简介 15

2.5  本章小结 17

3  高速弹正侵彻混凝土靶板问题数值模拟