Design of static test loading device for flexible large deformation structure

The static test of flexible large deformation structure simulates the stress state in service through the loading device. However, when the static loading device is applied to the static test of a large deformation structure, there are problems such as the deviation of loading direction and the difficulty in adjusting the loading direction. In view of the above problems, a loading device for the static test of flexible large deformation structure is designed. By setting force sensors and displacement measurement modules in each loading direction, the device can monitor the force and direction of the loading point in real-time, and correct the loading direction of the step-by-step loading combined with the adjustment of the slider, so as to solve the deviation of the loading direction in the static test of large deformation structure by the traditional loading method. The loading device is successfully applied to the static test of a landing gear for unmanned aerial vehicle. The test results show that the device has good loading integrity, small load error, accurate loading direction, and can be applied to multi-size landing gear structures.