The modal analysis and modeling study of the spacecraft payload load-bearing floor structure

摘要

As space industry and technology develop, the spacecraft structure systems become increasingly complex and the scales become much larger.Early in the project stage, finite element analysis is required to rapidly and accurately analyze and forecast dynamic characteristics of spacecraft.Based on this, the optimized structural design of spacecraft is then determined.Theoretical analysis done, the effect of both the type and size of shell elements and solid elements on calculation result is discussed during the dynamic analysis process.Shell elements and solid elements are respectively used for the study on load-bearing structure of spacecraft payload instrument.The purpose is, based on meeting the requirement of accuracy, to quickly conduct finite element dynamic analysis of the structure in the early payload structural design and provide a reference for the optimized design of spacecraft structure.