改进的螺栓连接结构建模方法及其在导弹设计中的应用  

A modified modeling method of bolted connection and its application to the missile design

作　　者：王晓慧[1] 樊思思 李人杰[1] 夏人伟[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《固体火箭技术》2014年第5期694-698,733,共6页Journal of Solid Rocket Technology

基　　金：中央高校基本科研业务费专项资金(YWF-13-ZY-02;YWF-14-FGC-024)

摘　　要：对存在接触、摩擦和预紧等非线性因素的螺栓连接结构有限元建模方法进行对比研究,建立了面向某型导弹舱段径向连接结构的求解效率高、适用性强的有限元模型,并分析求解。研究从不同形式的连接结构建模策略和螺栓预紧力施加手段两方面展开,通过基础平板连接结构,验证了4种组合建模方法的精度和有效性,对比优选出最优的建模方法。仿真结果表明,梁单元配合多点约束的建模方法配合直接施加法的预紧力施加方法,是一种可实现导弹舱段径向螺栓连接结构高效求解的有限元建模方法。本研究可作为导弹结构在方案设计阶段的理论基础,同时为下一步的结构优化设计提供有效的技术支持,具有一定的工程应用参考价值。The modeling methods of the bolted connection structure, which contains some nonlinear factors such as contact, friction and preload was stuidied,and an efficient method with wide range of application was proposed.How to establish bolted con-nection and how to add preload are two main parts in the study. It demonstrates the accuracy and the effectiveness of four combined methods and chooses the best one from them through a test connection structure. The results show that it is high efficient to use the beam element with adding preload directly to analyze the radially bolted connection between missile cabins. The study provides the theoretical basis of the structural design in scheme design stage of a missile, an effective technical support for further structural opti-mization design, and a certain reference value for engineering applications.

关 键 词：导弹总体设计 有限元建模 径向螺栓连接 接触分析 预紧力施加 

分 类 号：V421.3[航空宇航科学与技术—飞行器设计]