机械设计与制造工程
機械設計與製造工程
궤계설계여제조공정
MACHINE DESIGN AND MANUFACTURING ENGINEERING
2015年
1期
22-28
,共7页
大型水陆两栖飞机%主起落架%刚柔耦合%疲劳寿命%结构优化
大型水陸兩棲飛機%主起落架%剛柔耦閤%疲勞壽命%結構優化
대형수륙량서비궤%주기락가%강유우합%피로수명%결구우화
large amphibian aircraft%main landing gear%flexible body modeling%fatigue life%structure optimiza-tion
以疲劳寿命分析理论成果为指导，对大型水陆两栖飞机主起落架进行疲劳寿命计算分析与结构优化研究。通过Hypermesh进行模型有限元前处理，在NASTRAN中计算应力分布结果，利用NcodeDesignlife研究起落架整体结构件疲劳寿命；通过LMS Virtual．Lab建立前起落架刚柔耦合模型，得到各个零部件连接部位节点力，从而完成对各个零部件的独立建模分析计算；基于疲劳寿命的结构优化技术，以Optistruct为工具对起落架疲劳寿命薄弱部位进行形状优化，使得疲劳寿命进一步提高。
以疲勞壽命分析理論成果為指導，對大型水陸兩棲飛機主起落架進行疲勞壽命計算分析與結構優化研究。通過Hypermesh進行模型有限元前處理，在NASTRAN中計算應力分佈結果，利用NcodeDesignlife研究起落架整體結構件疲勞壽命；通過LMS Virtual．Lab建立前起落架剛柔耦閤模型，得到各箇零部件連接部位節點力，從而完成對各箇零部件的獨立建模分析計算；基于疲勞壽命的結構優化技術，以Optistruct為工具對起落架疲勞壽命薄弱部位進行形狀優化，使得疲勞壽命進一步提高。
이피로수명분석이론성과위지도，대대형수륙량서비궤주기락가진행피로수명계산분석여결구우화연구。통과Hypermesh진행모형유한원전처리，재NASTRAN중계산응력분포결과，이용NcodeDesignlife연구기락가정체결구건피로수명；통과LMS Virtual．Lab건립전기락가강유우합모형，득도각개령부건련접부위절점력，종이완성대각개령부건적독립건모분석계산；기우피로수명적결구우화기술，이Optistruct위공구대기락가피로수명박약부위진행형상우화，사득피로수명진일보제고。
Based on the theory of fatigue life analysis , it describes the fatigue life analysis and optimization of the main landing gear for a large amphibian aircraft .It builds the landing gear element model in Hypermesh , calcu-lates the distribution in NASTRAN , analyzes the landing gear overall structure fatigue life in NcodeDesignlife .It establishes the rigid flexible coupling model of the main landing gear and obtains the node forces of all connected parts through LMS Virtual .Lab, sets up the models one by one for each parts to obtain the more accurate fatigue life of each parts.At last, based on the fatigue life structure optimization technology , it realizes the shape optimi-zation for the positions of the main landing gear with little fatigue life to make further improvement in Optistruct .
