基于电磁力的机翼非接触式加载试验平台特性研究
Characteristics of Non-contact Wing Mechanics Loading Test Platform Based on Electromagnetic Field
李珊山 1陈先民 1弯港 2庞宝才 1梁源博1
作者信息
- 1. 强度与结构完整性全国重点实验室,西安 710065
- 2. 南京理工大学 瞬态物理全国重点实验室,南京 210094
- 折叠
摘要
目的 研究分析基于电磁力的非接触式翼面加载的可行性与适用特点.方法 利用多匝铜线绕制的驱动线圈,通入大电流产生强磁场,柔性线圈贴附于机翼表面,柔性线圈中的电流与强磁场相互作用产生较大的电磁力,实现对翼面的稳定加载.建立电磁力加载仿真计算模型,基于该模型分析不同线圈结构时电磁力特性,并设计力学加载平台,开展试验测试.结果 对比了柔性线圈和薄铁片2 种电磁力加载方式的不同,柔性线圈产生的电磁力比薄铁片小,但具有更好的线性度和可控性.上下布置 2 个驱动线圈能产生更大电磁力,但需要使2个驱动线圈电流方向相反,电流方向相反时产生的电磁力比方向相同时增强了16 倍.减小驱动线圈间距,使柔性线圈靠近驱动线圈,也能显著提高电磁力.开展了力学加载平台试验,柔性线圈产生的电磁力达到57 N,并可持续加载 320 s.结论 通过试验验证了提出的基于电磁场非接触式翼面加载的可行性,柔性线圈易贴附于机翼表面,可为复合材料、复杂翼形的力学加载测试提供一定参考.
Abstract
The work aims to study and analyze the feasibility and application characteristics of non-contact wing surface loading based on the electromagnetic force.A drive coil made of multi turn copper wire was used to generate a strong magnetic field by passing a large current inside.The flexible coil was attached to the surface of the wing,and the current in the flexible coil interacted with the strong magnetic field to generate a relatively stable electromagnetic force on the surface of the wing.A simulation calculation model of electromagnetic force loading was established,and electromagnetic force characteristics of dif-ferent coil structures were analyzed based on the model.A mechanical loading platform was designed and a test was carried out.Based on its electromagnetic force loading principle,the characteristics of using flexible coils and thin iron sheets were ana-lyzed.Flexible coils produced less electromagnetic force than thin iron sheets,but had better linearity and controllability.Plac-ing two driving coils up and down could generate a greater electromagnetic force,but the current direction of the two driving coils needed to be opposite.The electromagnetic force generated by the opposite current direction was 16 times stronger than that of the same direction.Reducing the distance between the driving coils and bringing the flexible coils closer to the driving coils could also significantly increase the electromagnetic force.A mechanical loading platform test was carried out,and the loading electromagnetic force of the flexible coil reached 57 N and could be loaded for 320 seconds.The feasibility of non-contact airfoil loading based on electromagnetic field is verified by experiments.The flexible coil is easily attached to the airfoil surface,which can provide some reference for the mechanical loading test of composite materials and complex airfoil.
关键词
电磁力/机翼加载/柔性线圈/试验平台/动态加载/复杂翼形Key words
electromagnetic force/wing mechanics loading/flexible coil/experimental platform/dynamic loading/complex wing shape引用本文复制引用
出版年
2024
NETL
NSTL
万方数据