紧固件柔度系数研究

在飞行器结构中普遍采用紧固件进行结构连接,紧固件的柔度系数是分析紧固件连接细节部位疲劳强度的重要参数.通常,确定紧固件柔度系数的方法多基于试验,但是这需要做大量的试验,耗费巨大.因此希望通过理论方法对紧固件柔度系数进行研究,获得新的计算紧固件柔度系数的方法,以达到减少试验和节省时间的目的.运用材料力学和弹性理论知识,推...

Investigation of Fastener Flexibility

Fastener is popularly used joint metal structure in aircraft. The flexibility of fastener is very important to analyze structure detail fatigue strength. Usually, many methods of fastener flexibility are all based on test. Lots of test should be taken and it would cost much. Study fastener flexibility by theory and get a method which can calculate fastener flexibility. In other words, this paper wants to find a method to instead of tests and time as more as possible. A formula which calculates fastener flexibility was found by using materiel mechanics and elastic mechanics. By comparing the method of this paper with the method which is from a famous aviation corporation or NACA report NACA_TN_1051, it proves that the method of this paper is consistent with them. And the method of this paper has considered more influence factors. So the method of this paper is useful in practice.