爆炸冲击波对舰船目标内部结构毁伤的可视化仿真研究

发布时间：2018-12-13 15:05

【摘要】：毁伤分析是武器验证、效能评估中的重要环节,也是战场决策的一个重要参考因素。由于舰船内爆毁伤过程非常复杂,通常采用实验的方法进行分析研究,成本高、效率低、所分析的样本也非常有限。以计算机数学模型替代实物进行仿真分析,可以有效的提高工作效率,节约成本。鉴于目前普通计算机无法实现爆炸冲击波毁伤的实时仿真计算,本文提出了一种基于离线计算数据的内爆冲击波对舰船目标内部结构毁伤的快速可视化仿真方法,主要研究毁伤过程中仿真数值的快速计算及可视化。本文针对内爆冲击波对舰船目标内部结构毁伤的特点以及毁伤结果评估所需的目标结构信息,提出了一种能对舰船目标的结构进行有效表示的建模方法,对舰船内部结构的材质、厚度、形状、位置分布以及彼此间的物理和功能关系进行有效表示,为弹目交互过程和毁伤结果评估提供了舰船目标的结构信息。本文对内爆冲击波毁伤理论模型各维度的特点进行了分析研究,提出并实现了一种基于离线数据的多维异性插值估计方法,适用于舰船目标内爆冲击波毁伤结果的快速计算。并研究了对舰船内部结构进行实时动态分析的方法,实现了毁伤仿真结果的快速动态计算。最后设计并实现了一个导弹攻击舰船目标发生内爆的可视化仿真算例,以检验上面所提到方法的可行性。在可视化方面实现了舰船舱壁的变形撕裂、舱壁压力分布的颜色表示以及毁伤结果的评估显示等功能。
[Abstract]:Damage analysis is an important link in weapon verification and effectiveness evaluation, and it is also an important reference factor in battlefield decision. Due to the complexity of the damage process of warship implosion, the experimental method is usually used to analyze and study the damage. The cost is high, the efficiency is low, and the samples are very limited. The computer mathematical model can be used instead of the real object to carry on the simulation analysis, which can effectively improve the working efficiency and save the cost. In view of the fact that the real time simulation of blast wave damage can not be realized by ordinary computer, this paper presents a fast visual simulation method based on off-line calculation data for damage to the internal structure of ship target by implosion shock wave. This paper mainly studies the fast calculation and visualization of simulation value in the process of damage. In this paper, according to the characteristics of the damage caused by implosion shock wave to the internal structure of the ship and the information of the target structure needed for the evaluation of the damage results, a modeling method which can effectively represent the structure of the ship target is proposed. The material, thickness, shape, position distribution and physical and functional relationships of the ship's internal structure are represented effectively, which provides the structure information of the ship's target for the interaction process and the damage result evaluation. In this paper, the characteristics of each dimension of the theoretical model of implosion shock wave damage are analyzed and studied, and a multi-dimensional anisotropic interpolation method based on off-line data is proposed and realized, which is suitable for the fast calculation of the damage result of the target implosion shock wave. The method of real-time dynamic analysis of warship internal structure is studied, and the fast dynamic calculation of damage simulation results is realized. Finally, a visual simulation example of implosion of missile attacking ship target is designed and implemented to verify the feasibility of the method mentioned above. In the aspect of visualization, the functions of warship bulkhead deformation tear, color representation of bulkhead pressure distribution and evaluation of damage result are realized.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U674.70;TP391.41

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