CAJ | 학술논문

高超声速飞行器在巡航/再入阶段经历着严酷的气动力/热/噪声等复合环境，严重威胁着结构的完整性和可靠性。严酷的热环境会显著改变结构的整体和局部模态特性，出现模态跳跃和丢失；当与噪声载荷共同作用时，结构动态响应出现突弹跳变现象，表现出强非线性特征，因此热噪声复合环境下结构动响应预示面临严峻挑战。本文综述了热噪声复合环境动响应预示技术的发展过程，对比分析了目前热噪声动响应预示技术的优势与不足，对于未来高超声速飞行器、可重复使用运载器等载荷环境条件制定和结构优化设计均具有重要意义。
고초성속비행기재순항/재입계단경력착엄혹적기동력/열/조성등복합배경，엄중위협착결구적완정성화가고성。엄혹적열배경회현저개변결구적정체화국부모태특성，출현모태도약화주실；당여조성재하공동작용시，결구동태향응출현돌탄도변현상，표현출강비선성특정，인차열조성복합배경하결구동향응예시면림엄준도전。본문종술료열조성복합배경동향응예시기술적발전과정，대비분석료목전열조성동향응예시기술적우세여불족，대우미래고초성속비행기、가중복사용운재기등재하배경조건제정화결구우화설계균구유중요의의。
Hypersonic vehicles will be exposed to an extremely combination of aerodynamic, thermal and acoustic environments during cruise or re-entry flights, which severely affect the integrity and durability of these vehicles. Thermal environment will alter the global and local modal properties obviously, which leads to the transition and missing of structural modes. There may be dynamic snap-thru for aerocraft structures and the dynamical response will perform strong nonlinearity when taking account of the common effect of thermal and acoustic load. This brings tremendous challenge to analysis for the prediction of dynamical response of aerocraft structure under a combination of thermal and acoustic environments. A detailed review of study on prediction of dynamical responses for hypersonic vehicles under a combination of thermal and acoustic environments by numerical simulation abroad and at home is presented. The advantages and disadvantages of the various prediction methods for dynamical responses are summarized as well. It makes a significant sense for the establishment of load environment and the structural optimal design for future hypersonic vehicles and reusable launch vehicle.