史玉杰, 王玉花, 田正波. 基于柱梁的片式应变天平研制技术[J]. 实验流体力学, 2016, 30(6): 81-85. DOI: 10.11729/syltlx20160082
引用本文: 史玉杰, 王玉花, 田正波. 基于柱梁的片式应变天平研制技术[J]. 实验流体力学, 2016, 30(6): 81-85. DOI: 10.11729/syltlx20160082
Shi Yujie, Wang Yuhua, Tian Zhengbo. Technique for developing thin slab strain gauge balance based on rectangular beam[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(6): 81-85. DOI: 10.11729/syltlx20160082
Citation: Shi Yujie, Wang Yuhua, Tian Zhengbo. Technique for developing thin slab strain gauge balance based on rectangular beam[J]. Journal of Experiments in Fluid Mechanics, 2016, 30(6): 81-85. DOI: 10.11729/syltlx20160082

基于柱梁的片式应变天平研制技术

Technique for developing thin slab strain gauge balance based on rectangular beam

  • 摘要: 在飞行器铰链力矩测力和部件测力风洞试验中,常采用片式应变天平测量。受模型结构限制,传统片式天平连接端刚度相对天平元件不足,测量精准度偏低。将片式天平元件分解为多个柱梁元件,通过多个柱梁元件组成一台新型结构的片式天平,可以有效提高片式天平的测量精准度。传统力学分析和有限元软件仿真分析结果均表明该方法具有可行性。基于该技术研制了验证天平,校准结果表明该技术具有很高的应用价值。目前该片式天平研制技术已在中国空气动力研究与发展中心高速所成功应用于多个试验项目。

     

    Abstract: The thin slab strain gauge balance is often used in hinge moment force test and parts force test for aircraft in wind tunnel. Limited by the structure of the aircraft model, the stiffness of the conventional thin slab strain gauge balance at the connections is insufficient as compared with that of the balance elements, leading to low accuracy. In this study, each element of the thin slab balance is divided into multiple rectangular beams which together compose a new element. Using the new thin slab strain gauge balance can improve the accuracy of measurement. By traditional mechanical analysis, FEA, and tests the feasibility of the technique is shown, and it has already been used in several wind tunnel tests in China Aerodynamics Research and Development Center.

     

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