电脉冲除冰系统的结构力学性能分析

发布时间：2018-03-10 21:26

本文选题：飞机防冰除冰　切入点：电脉冲除冰(EIDI)　出处：《北京航空航天大学学报》2016年10期 　论文类型：期刊论文

【摘要】：电脉冲除冰(EIDI)作为一种电动-机械式除冰系统,具有广阔的应用前景。本文采用线圈和金属平板组成的电脉冲系统作为EIDI结构动力学模型的研究对象,基于有限元分析软件MSC/NASTRAN,建立了一套针对典型平板-线圈结构的EIDI系统结构动力学仿真模型,研究了模型的固有特性(模态与频率)与时域响应分析,并开展了仿真模型的实验验证。研究了基于模型的EIDI系统结构动力学特性,重点关注最大应变和位移在空间的分布规律,并讨论了电容、电压等放电参数的影响。研究表明,电脉冲作用下,平板最大位移分布特性近似“马鞍型”,提升电容和电压可以增大脉冲力峰值和结构变形量,同时减小固定位置处的应变。
[Abstract]:As an electric-mechanical deicing system, the electric pulse deicing system (EIDI) has a broad application prospect. In this paper, the electric pulse system composed of coil and metal plate is used as the research object of the dynamic model of EIDI structure. Based on the finite element analysis software MSC-NASTRAN, a dynamic simulation model of EIDI system is established for a typical plate-coil structure. The inherent characteristics (modal and frequency) and time-domain response analysis of the model are studied. The dynamic characteristics of the EIDI system based on the model are studied, the distribution of maximum strain and displacement in space is focused on, and the effects of discharge parameters such as capacitance and voltage are discussed. Under the action of electric pulse, the maximum displacement distribution of the plate is similar to that of "saddle type". Lifting capacitance and voltage can increase the peak value of pulse force and the deformation of the structure, and decrease the strain at the fixed position at the same time.
【作者单位】：北京航空航天大学航空科学与工程学院;中国空间技术研究院;
【分类号】：V244.1+5

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