Modeling Technology in Finite Element Analysis of Electrostatic Proximity Fuze Problem  

静电引信问题有限元分析中的建模方法(英文)

作　　者：李银林[1] 施聚生[1] 

机构地区：[1]北京理工大学机电工程学院,北京100081

出　　处：《Journal of Beijing Institute of Technology》2000年第3期286-290,共5页北京理工大学学报（英文版）

基　　金：MinisterialLevelFoundation

摘　　要：In order to analyze the electrostatic field concerned with electrostatic proximity fuze problem using the available finite analysis software package, the technology to model the problem with a scale reduction object and boundary was presented. The boundary is determined by the maximum distance the sensor can detect. The object model is obtained by multiplying the terms in Poisson's equation with a scale reduction factor and the real value can be reconstructed with the same reverse process after software calculation. Using the finite element analysis program, the simulation value is close to the theoretical value with a little error. The boundary determination and scale reduction method is suitable to modeling the irregular electrostatic field around air targets, such as airplane, missile and so on, which is based on commonly used personal computer (PC). The technology reduces the calculation and storage cost greatly.为了使用现有的商业有限元分析软件包分析静电引信问题所涉及的静电场 ,提出了一种按比例缩小目标和边界的建模方法 .模型的边界根据静电引信探测器的最大探测距离确定 ,目标模型通过将泊松方程的各项乘以缩比因子而得到 .经过软件计算得出仿真结果后 ,目标的真实值可由上述建模过程的逆过程重建 .通过有限元仿真分析 ,仿真结果与理论计算结果误差很小 ,非常接近 .本文所述的边界确定方法和缩比方法可用于飞机、导弹等非规则静电目标建模 .它使在通用PC机上的静电引信问题有限元分析成为可能 。

关 键 词：electrostatic proximity fuze finite element analysis boundary condition scale reduction method 

分 类 号：TJ43[兵器科学与技术—火炮、自动武器与弹药工程]