CAJ | 학술논문

本文首先详细描述了大变形非线性问题的有限元数值计算理论，包括大变形非线性数值计算方法、结构稳定性计算和屈曲问题。其次采用有限元软件MSC．Marc在直升机受阻右侧滑载荷条件下对垂尾结构进行了稳定性数值分析计算，主要对垂尾进行了优化结构下的结构和厚度圆整后结果的结构进行了稳定性分析。计算结果表明：垂尾前缘根部出现失稳现象，而其它区域没有失稳现象出现。最后本文通过细致的分析、校核稳定性分析计算结果，给出了复合材料结构承载后屈曲稳定性数值分析方法，为直升机复合材料仿真技术的发展积累了经验。
본문수선상세묘술료대변형비선성문제적유한원수치계산이론，포괄대변형비선성수치계산방법、결구은정성계산화굴곡문제。기차채용유한원연건MSC．Marc재직승궤수조우측활재하조건하대수미결구진행료은정성수치분석계산，주요대수미진행료우화결구하적결구화후도원정후결과적결구진행료은정성분석。계산결과표명：수미전연근부출현실은현상，이기타구역몰유실은현상출현。최후본문통과세치적분석、교핵은정성분석계산결과，급출료복합재료결구승재후굴곡은정성수치분석방법，위직승궤복합재료방진기술적발전적루료경험。
Firstly, this paper minutely described the finite element numerical calculation theory of nonlinear problem, including the large deformation nonlinear numerical calculation, the structure stability analysis and buckling analysis. Sec- ondly, stability numerical analysis was made on caudal segment structure when the helicopter was under the resistance right slip load using MSC. Marc, mainly to fin under the optimized structure and thickness round structure. Calculation results showed that instability phenomenon appeared on fin front, and other arrears had no instability buckling. Finally, this paper gave composite structure buckling analysis method by careful analysis and checking stability analysis results. It can accu- mulate the experience for the development of technology in helicopter.