Method and system for determining and loading external load in direct calculation of hovercraft structure

The invention belongs to the technical field of external load force measurement, and discloses a method and a system for determining and loading an external load in direct calculation of a hovercraft structure. Solving the frequency domain motion equation of the hovercraft by adopting a three-dimensional linear frequency domain external load solving method, and determining static and dynamic air chamber and air bag pressure; loading a load pressure field to the corresponding structural finite element model through load position mapping; finite element software is used for carrying out actual hovercraft structure optimization work. The method solves the problem that the external load is difficult to determine and load in the direct calculation of the current hovercraft structure. Compared with a computational fluid dynamics (CFD) method and a model test in the prior art, the method has the beneficial effects that the external load of the hovercraft in the wave environment can be determined and loaded within mo