Study on Electroadhesive Friction of Insulating Layer under Applied Voltage

In this study, an electroadhesive friction model considering insulating layer thickness based on Lennard-Jones traction was developed. The effects of applied voltage, effective thickness and electroadhesive elasticity/plasticity parameters on friction behaviors were thoroughly investigated. The results exhibit that a higher applied voltage increases contact diameter and electroadhesive friction, but leads to decreased normal force. Increasing the effective thickness results in a lower friction force and higher normal force. Additionally, the pull-off force exhibits an approximate linear dependence on the electroadhesive elasticity parameter λV. Furthermore, in the friction process, the steady normal force increases initially and then decreases with increasing λV. The steady-state friction force is primarily governed by λVand the degree of plastic deformation. Moreover, an increase in the electroadhesive plasticity parameter SV reduces the normal force while enhancing the friction force. This results in a divergence of the normal forces during the indentation and friction processes due to plastic deformation.