Performance analysis derivative based updating method Asian freesex chat room
Modal analysis data and vibration table excitation test response data are used to modify the finite element model.
After optimization, the orthogonality of the simulated vibration mode and experimental vibration mode is good.
The finite element model updating technology of satellite structures was proposed to solve this problem.
For these reasons, it is quite difficult to establish an accurate and reasonable finite element model.
There is error between finite element analysis results and experimental values.
In addition, the physical test period is long and expensive; this hinders the development of the satellite industry.
The finite element simulation technology can conduct a comprehensive dynamic analysis of a product and obtain its response under various conditions.
The dynamic parameters (modal matrix, coupling coefficient matrix, etc.,) of the sailboard assembly of satellites provide a solid foundation for the precise control of the on-orbit attitude of satellites, as it is an extended large flexible accessory.