气动力模拟非接触式加载方法研究

摘要

介绍了一种地面电磁干风洞的实验方法,可以利用电磁场和安培力实现气动力的模拟,在不接触模型的条件下对模型进行静态和动态加载.这在一些非气动力因素起主导作用的多学科动力学过程的研究中具有重要意义.为了验证实验技术的有效性,进行了一系列的验证试验,给出了静载荷试验和动态准模态试验的结果,证明了实验技术的可行性和有效性.试验结果与经典有限元仿真计算结果基本一致,研究表明,电磁干风洞装置可以准确地进行加载,取得合理的试验结果.%A ground electromagnetic dry wind tunnel test technique is introduced in this paper.The technique enables the usage of the electromagnetic field and Ampere force to simulate the aerodynamic force.In this technique,the static and dynamic loads are conducted on tested model without contact with the model.This technique is very significant to the study of multidiscipline dynamics process dominated by non-aerodynamics elements.In order to verify the effectiveness of the test technique,a series of calibration tests have been carried out.This study has proved that electromagnetic dry wind tunnel apparatus is capable of providing reasonable results by correctly loading.