CAJ | 학술논문

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。
대존재접촉、마찰화예긴등비선성인소적라전련접결구유한원건모방법진행대비연구，건립료면향모형도탄창단경향련접결구적구해효솔고、괄용성강적유한원모형，병분석구해。연구종불동형식적련접결구건모책략화라전예긴력시가수단량방면전개，통과기출평판련접결구，험증료4충조합건모방법적정도화유효성，대비우선출최우적건모방법。방진결과표명，량단원배합다점약속적건모방법배합직접시가법적예긴력시가방법，시일충가실현도탄창단경향라전련접결구고효구해적유한원건모방법。본연구가작위도탄결구재방안설계계단적이론기출，동시위하일보적결구우화설계제공유효적기술지지，구유일정적공정응용삼고개치。
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.