Experimental research on fatigue performance of aero-structure under two combined loads

In this paper, a new engineering test method which put forward the initial stage of aircraft design, bearing both acoustic and static loads, is carried out in Lab. From currently test effect, it could accurately simulate the real situation of aircraft panel under hydrostatic load and acoustic load, and the test result shows that the structure presents plastic deformation under the combined action of acoustic load and static load, which differs from the common failure mode of the structure under the action of the single strong noise load. Furthermore, the proposed method could provide guidance to support aircraft type selection.In this paper, a new engineering test method which put forward the initial stage of aircraft design, bearing both acoustic and static loads, is carried out in Lab. From currently test effect, it could accurately simulate the real situation of aircraft panel under hydrostatic load and acoustic load, and the test result shows that the structure presents plastic deformation under the combined action of acoustic load and static load, which differs from the common failure mode of the structure under the action of the single strong noise load. Furthermore, the proposed method could provide guidance to support aircraft type selection.