CAJ | 학술논문

传统航天器结构模态试验通常会用来检验结构有限元分析模型，但往往是通过人工调整有限元模型参数来修正模型，分析与试验联系不紧密，影响后续分析结果的精度、研制周期和经费等。为改变航天器模态分析及试验现状，文中介绍了模态分析-试验体系工程研制流程在理论上的可行性，并以某缩比舱段为例，基于Virtualab-Nastran软件平台，完整实施模态分析-试验体系过程，包括预试验分析、模态试验、模型修正等过程，紧密联系模态分析、试验，并依据试验结果准确快速修正有限元模型，使分析结果与试验接近，实现精确建模。
전통항천기결구모태시험통상회용래검험결구유한원분석모형，단왕왕시통과인공조정유한원모형삼수래수정모형，분석여시험련계불긴밀，영향후속분석결과적정도、연제주기화경비등。위개변항천기모태분석급시험현상，문중개소료모태분석-시험체계공정연제류정재이론상적가행성，병이모축비창단위례，기우Virtualab-Nastran연건평태，완정실시모태분석-시험체계과정，포괄예시험분석、모태시험、모형수정등과정，긴밀련계모태분석、시험，병의거시험결과준학쾌속수정유한원모형，사분석결과여시험접근，실현정학건모。
Traditional modal test of spacecraft is usually used to examine its finite element model,but the param-eters of the finite element model are always modified through artificial adjustment,which isolates modal analysis from modal test,and influences the precision of subsequent analysis,research period and funds etc.In order to change the present situation of modal analysis and test of spacecraft,this paper introduces the feasibility of modal analysis-test system in theory,and based on the Virtualab-Nastran software platform,gives an example of a scaling cabin,implements the complete procedures of modal analysis-test system,including pretest analysis, modal test,model updating etc,which closely relates modal analysis to test,corrects the finite element model rapidly according to the test results,makes the analysis results close to test results,and achieves precise model-ing.