| 天平与波纹管系统结构设计与有限元分析 |
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| 引用本文： | 王超,林俊,殷国富,彭云,郭旦平,王玉花.天平与波纹管系统结构设计与有限元分析[J].气动实验与测量控制,2013(3):77-80,92. |
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| 作者姓名： | 王超 林俊 殷国富 彭云 郭旦平 王玉花 |
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| 作者单位： | [1]四川大学制造科学与工程学院,成都610065 [2]中国空气动力研究与发展中心,四川绵阳621000 [3]金风科技股份有限公司,北京102600 |
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| 摘 要： | 为满足某飞机后机身风洞试验需求,研制了一种用金属波纹管密封测力天平的新型测力装置。利用密封原理,该装置的波纹管结构能有效地隔断风洞流场压力波动,使其内腔压力平衡,确保天平精确测量作用在飞机后机身上的气动载荷。通过对天平与波纹管系统进行合理的结构设计,以及应用有限元方法进行详尽的静态和动态力学分析,该装置得到了较为理想的设计结果。天平地面校准和风洞试验结果表明,波纹管密封效果好,对天平测力干扰小,达到了预期的试验要求。
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| 关 键 词： | 风洞试验 应变天平 波纹管 结构设计 有限元分析 |
Structure design and finite element analysis on system of balance and bellows |
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| Authors: | WANG Chao GUO LIN Jun YIN Guo-fu PENG Yun Dan-ping WANG Yu-hua |
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| Institution: | 1. School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China; 2. China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China; 3. Goldwind Science and Technology Co. Ltd. , Beijing 102600, China) |
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| Abstract: | To meet wind tunnel test demands for an aircraft＇s afterbody, a novel measuring device, a balance airproofed with metal bellows, is developed. Utilizing sealing principle, this de- vice can keep stable pressure in its inner cavity by blocking pressure fluctuations of wind tunnel flow field with the bellows, and can accurately measure the aerodynamic loads acting on the air- plane＇s afterbody with the balance. The appropriate structural designs and full analysis on static and dynamic mechanics performance for the balance and bellows are studied based on finite element method, which lead an ideal design. The results of static calibration and wind tunnel tests show that the interference to force balance good airproof-effect of the bellows, and the from the flow pressure fluctuations is little with the test demands are realized in term of the expectation. |
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| Keywords: | wind tunnel test strain balance bellows structure design finite element analysis |
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