The invention belongs to the technical field of aircraft fatigue calculation, and discloses a method for determining a fatigue rated value of a connection detail of an aircraft stringer and a skin. Influence of the row number of stringers and skin connecting fasteners on the fatigue performance under the shear condition is considered, the ratio of extrusion stress to far-end stress is calculated by combining the shear flow difference of the upper skin and the lower skin, and the calculated DFR value is more accurate.
本发明属于飞机疲劳计算技术领域,公开了一种飞机长桁与蒙皮连接细节疲劳额定值的确定方法。虑了受剪情况下长桁与蒙皮连接紧固件的排数对疲劳性能的影响,并结合上下蒙皮剪流差计算挤压应力与远端应力比,计算DFR值更准确。
Method for determining fatigue rated value of connection detailof airplane stringer and skin
一种飞机长桁与蒙皮连接细节疲劳额定值的确定方法
2021-04-13
Patent
Elektronische Ressource
Chinesisch
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