高速飞行杆对钢板的侵彻研究仿真
关键词 侵彻；高速飞行杆；靶板；ANSYS/LS-DYNA软件
毕业设计说明书（论文）外文摘要
Title The Penetration of High Speed Log into Finite Metallic Targets
Abstract
Air to air guided missile is a kind of guided missiles which is launched by air vehicles and is aimed to assault air target. The penetration of high speed log into finite metallic targets belongs to breakdown damage. This paper applies the ANSYS/LS-DYNA10.0 software to the 3-D numerical simulation research of process of the penetration of high speed log into finite metallic targets which is an famous international explicit dynamic analysis software. This paper states the domestic and abroad research status of penetration, establish the load relation of the vertical and fastigiated penetration and the impact basic equation .Bring forward the hypothesis of the penetration simulation of projectile-target system model, chose the element type , the corresponding material model ,the contact type and the bulk viscosity . Through the 3-D numerical simulation of the penetration of high speed log into finite metallic targets by the payload of air to air guided missile, and studying the vertical penetration specifically, this analysis would be of much value to the penetration problem.
Keywords Penetration; High Speed Log, Target; ANSYS/LS-DYNA10.0 software
目 次
1 绪论 1
1.1 背景及意义 1
1.2 国内外研究发展概况 1
1.2.1 实验研究 3
1.2.2 理论分析 4
1.2.3 数值模拟研究 5
1.3 本文的主要工作及论文的组织 6
2 基本理论 8
2.1 侵彻类型的确定和侵彻过程分析 8
2.1.1 侵彻类型的确定 8
2.1.2 侵彻过程分析 8
2.2 有限元基本理论13
2.2.1 基本控制方程13
2.2.2 有限元离散15
3 高速飞行杆对钢板的侵彻的有限元数值模拟20
3.1 有限元软件的相关知识20
3.1.1 ANSYS/LS-DYNA10.0软件介绍20
3.1.2 显示时间积分法20
3.1.3 LS-DYNA程序的标准算法是20
3.1.4 网格划分注意问题20
3.2 长杆弹的实际结构及性能简介21
3.3 侵彻模型的简化22
3.3.1 长杆弹结构的简化假设22
3.3.2 靶板结构的简化假设22
3.3.3 侵彻的几何模型22
3.4 计算模型的建立23
3.4.1 前处理23
3.4.1.1 单元类型及材料模型的定义23 3.4.1.2 弹靶的三文模型建立及有限元网格的划分23
3.4.1.3 前处理的其它设定24
3.4.2 设定求解参数25
3.4.3 K文件的修改 25
3.4.4 对K文件的计算26
3.5 计算结果及其分析26