Method and system for dynamic response analysis of satellite carrier system

Abstract

The invention discloses a dynamic response analysis method and system of a satellite frame system, wherein the method includes: performing modal analysis on the support according to the finite element modeling results of the support, and satisfying the design requirements when the modal analysis results of the support When , conduct modal analysis on the satellite-frame coupling system to obtain the frequency of the satellite-frame coupling system; and when the frequency of the satellite-frame coupling system meets the set frequency, perform modal analysis on the satellite to obtain the Acceleration response value; determine the acceleration response value at the bracket installation place according to the acceleration response value at the characteristic point of the star-frame coupling body, and calculate the pull-out force at the bracket installation place; if the calculated pull-out force at the bracket installation place is less than the The pullout force of the embedded part is redesigned until it meets the requirements. The invention improves the structural design and dynamic analysis level of the satellite star frame system.

Description

Technical field [0001] The present invention belongs to the technical field of kinetic analysis, and more particularly to a dynamic response analysis method and system of satellite star system. Background technique [0002] Satellite engineering's payload bracket structure can be dynamically coupled to the satellite main structure, thereby causing effective load response significantly. Further, the effective load bracket and the satellite body structure are further considering an overall system (called a star system). Since the stent structure has the advantages of light, the configuration is simple and the planar occupancy is small, it is possible to reduce the overall quality of the satellite, reduce the difficulty of component processing and facilitate the installation and layout of the instrument, so the stent structure is widely used in modern satellite structures. As an installation base of the payload or instrumentation. As a critical posture measurement component, the sen...

AI Technical Summary

Problems solved by technology

[0003] At present, the design of the bracket mostly takes the component-level payload bracket structure as the research object, but when the payload bracket is installed with the satellite main structure, the stiffness of its boundary connection will change, resulting in the dynamics of the payload bracket structure in the whole satellite state. Properties differ significantly from their structural dynamics in component-level states

Therefore, the stiffness design for the component-level payload bracket does not necessarily meet the stiffness requirements of the payload bracket in the full-star state, and may even further amplify the payload response

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