Influence of external load on friction coefficient of Fe–polytetrafluoroethylene
Hao Xiu-Hong1, 2, Pan Deng1, 2, †, Zhang Ze-Yang1, Wang Shu-Qiang1, 2, Gao Yu-Jin3, Gu Da-Peng1, 2
       

(a) Bond energy, (b) angle energy, (c) kinetic energy, and (d) Fe–PTFE interaction potential energy as a function of simulation time for different external loads.