加强凸台的结构参数优化设计

Optimization Design of Structure Parameters of the Strengthening Boss

摘要: 凸台是一种常用的孔边加强方式，本文通过有限元软件ANSYS建立孔边凸台结构模型，分析了一阶和二阶加强凸台结构尺寸对结构静强度和疲劳寿命的影响。通过有限元模型分析，本文以凸台高度、厚度和底部过渡圆角为结构要素，建立了凸台优化设计的方式和原则；在此基础上，结合工程实际，本文给出了二阶凸台设计的方式和原则，且适合于多阶凸台设计。本文的研究结果为孔边加强凸台的结构设计提供了参考和指导，所得结果具有良好的工程参考价值。

Abstract: The boss is a common shape of reinforcement for holes. Based on finite element modeling, this paper established the design principles and procedure for bosses through three fundamental structure elements, i.e. height, width, and transitional fillet radius. The influence of these elements on static strength and fatigue life of the boss was discussed and illustrated. Further, this paper also discussed the design of two-order bosses following the design of general boss above, combined with engineering requirements. The study in this paper is beneficial for engineering, and the demonstration shows optimization of the design which provides the meaningful reference and guidance for design of the hole-side boss structures.