CAJ | 학술논문

风洞试验模型的振动对数据精准度具有较大影响，特别是在大迎角试验状态下模型的振动甚至危害到了试验的安全性。为了提高试验数据的精准度，保障试验安全性，有必要采取措施控制风洞试验中的模型振动。针对中国空气动力研究与发展中心4m×3m低速风洞尾撑装置的特点，制定了两种振动主动控制方案，并对控制方案进行了有限元仿真验证。采用ANSYS软件对4 m ×3 m风洞尾撑装置进行了有限元建模，在此基础上进行了模态分析，获得了尾撑装置的固有频率及振型等动力学特征。进而采用APDL编程语言，基于平滑预测策略对主动控制过程进行了动力学对比分析。仿真分析表明，所提出的4m×3m风洞尾撑装置主动控制方案具有良好的抑振效果。
풍동시험모형적진동대수거정준도구유교대영향，특별시재대영각시험상태하모형적진동심지위해도료시험적안전성。위료제고시험수거적정준도，보장시험안전성，유필요채취조시공제풍동시험중적모형진동。침대중국공기동력연구여발전중심4m×3m저속풍동미탱장치적특점，제정료량충진동주동공제방안，병대공제방안진행료유한원방진험증。채용ANSYS연건대4 m ×3 m풍동미탱장치진행료유한원건모，재차기출상진행료모태분석，획득료미탱장치적고유빈솔급진형등동역학특정。진이채용APDL편정어언，기우평활예측책략대주동공제과정진행료동역학대비분석。방진분석표명，소제출적4m×3m풍동미탱장치주동공제방안구유량호적억진효과。
The model vibration has great impact on the accuracy of wind tunnel test,and it also harms the safety, especially,under the state of big attack angle.Two active vibration control schemes were proposed for a 4m ×3m low speed wind tunnel in China aerodynamics research and development center.The finite element method was used to analyze the efficiency of the methods.A finite element model was established for the sting supporting system of the 4m ×3m wind tunnel.Then the modal analysis was conducted to get the natural frequencies and vibration modes.By using the APDL program language,the active control process was simulated under the scheme of smoothing and forecasting.The results implied that the two active vibration control methods proposed for the 4m ×3m low speed wind tunnel are both effective.