Impact of Collision Speeds and Angles on Electrification of Typical Materials

doi:10.12382/bgxb.2022.0083

Abstract

Abstract:

This study aims to address the problem of electrostatic deposition in aircraft by exploring the electrification voltage of typical materials. The focus is on understanding the change in electrification voltage after collisions between typical materials and air particles at different collision angles and speeds. This research approach involves a combination of simulation tests and analysis, with the goal of understanding the influence of collision angle and speed of air particles on the electrification of typical materials as well as preliminarily unveiling the change law of electrification voltage of certain materials. The results show that the electrification voltage of the typical material increases approximately linearly with an increase in collision angle and speed. The collision speed affects the contact area and mode, while the collision angle affects the proportion of different modes in the contact area, both of which impact the change in electrification voltage of typical materials.

Key words: electrostatic deposition, typical material, air particles, collision angle, collision speed

ZHAI Weipeng, HU Xiaofeng, ZHOU Shuai, WANG Yingying. Impact of Collision Speeds and Angles on Electrification of Typical Materials[J]. Acta Armamentarii, 2023, 44(5): 1358-1364.

Figures/Tables 10

Fig.1 Schematic diagram of the test setup

Fig.2 Variation of PVC electrification voltage value with collision angle

Fig.3 Variation of PTFE electrification voltage value with collision angle

Fig.4 Variation of plexiglass electrification voltage value with collision angle

Fig.5 Schematic diagram of the simulation model

Table 1 Contact parameters at different collision angles

角度/ (°)	位移差/m	最大位移量时间点/s	接触面积/m²
30	4.06×10^-3	4.15×10^-4	0.001357168
45	5.42×10^-3	3.51×10^-4	0.001790708
60	6.55×10^-3	3.19×10^-4	0.002139424
75	7.25×10^-3	3.35×10^-4	0.002277655
90	7.49×10^-3	3.35×10^-4	0.002353053

Fig.6 Electrification amount of different collision angles

Fig.7 Variation of electrification voltage with collision speed for three materials

Table 2 Contact parameters at different collision velocities

速度/ (m·s^-1)	位移差/m	最大位移量时间点/s	接触面积/ m²
50	7.49×10^-3	3.35×10^-4	0.00235
100	1.44×10^-2	2.72×10^-4	0.00452
200	2.71×10^-2	2.36×10^-4	0.00851
340	4.26×10^-2	2.15×10^-4	0.01338
680	7.34×10^-2	1.80×10^-4	0.02306
1020	9.75×10^-2	1.59×10^-4	0.03063

Fig.8 Electrification amount of different collision velocities

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