Finite element modeling method for pitching transmission chain of large-caliber high-frequency-band offset reflector antenna

The invention discloses a finite element modeling method for a pitching transmission chain of a large-caliber high-frequency-band offset reflector antenna, and belongs to the field of radio astronomy and satellite communication. According to the method, a key force transmission structure in the transmission system is modeled by using a simplified unit, and a connection relation is modeled by using a constraint equation, so that accurate description of a finite element model on a force transmission path and force transmission characteristics of the pitching transmission system is realized; therefore, the purposes of small data volume and high calculation precision of the finite element model of the transmission chain of the transmission system are finally achieved. According to the modeling method, modeling is simple, consumed computing resources are few, the modeling method is suitable for optical-mechanical coupling integrated simulation and optimization calculation of the offset reflector antenna, and the m