A novel multi-component strain-gauge external balance for wind tunnel tests: Simulation and experiment
A novel multi-component strain-gauge external balance for wind tunnel tests: Simulation and experiment
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DOI：
10.1016/j.sna.2016.05.035
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发表时间：
2016-08-15
影响因子：
4.6
通讯作者：
Gholamzadeh, M.
中科院分区：
文献类型：
--
作者：
Tavakolpour-Saleh, A. R.;Setoodeh, A. R.;Gholamzadeh, M.
本文介绍了一种新型的多分量应变式外天平，用于风洞实验中测量升力、阻力和俯仰力矩。首先，提出了一种创新的结构，其几何形状是通过繁琐的试验和错误的计划，使用有限元（FE）模拟确定。因此，选择传感器的尺寸，以获得可接受的灵敏度和考虑最大负载能力的组件之间的干扰误差可以忽略不计。通过仿真确定了应变片在结构上的合适位置。然后，平衡组件的灵敏度，发现使用有限元分析。最后，构建并标定了所设计的外平衡。实验结果表明，各平衡元件之间的干扰误差小于2.01%。此外，传感器元件的测量灵敏度与仿真结果吻合良好，通过仿真验证了设计过程。(C)2016爱思唯尔B.V.保留所有权利。
This paper presents a novel multi-component strain-gauge external balance to measure lift and drag forces as well as pitching moment in wind tunnel experiments. First, an innovative structure is proposed and its geometry is determined through a tedious trial and error scheme using finite element (FE) simulation. The sensor dimensions are thus chosen so as to acquire acceptable sensitivity and negligible interference error among the components considering maximum loading capacities. Appropriate locations of the strain gauges on the structure are determined via simulation. Then, sensitivities of the balance components are found using the FE analysis. Finally, the designed external balance is constructed and calibrated. It is found that the interference error among the balance components is less than 2.01%. Furthermore, the measured sensitivities of the sensor components are in a good agreement with the simulation results through which the design procedure is validated. (C) 2016 Elsevier B.V. All rights reserved.