Randomized trial investigates breakloose friction dynamics in nanoscale and macroscopic systems, suggesting complex interplay of mechanisms.
Key Points
This research aims to understand how factors like system size, temperature, and loading geometry affect breakloose friction in nanoscopic and macroscopic systems.
Investigated three minimal friction models: multi-particle Prandtl–Tomlinson system, end-driven Frenkel–Kontorova chain, and uniformly driven FK chain.
Analyzed the effects of system size, temperature, and driving rates on the friction behavior.
Studied how local depinning events and elastic stress transmission influence breakloose friction suppression.
In multi-particle Prandtl–Tomlinson systems, larger sizes or higher temperatures smooth the overall response due to statistical dephasing of local depinning (p<0.05).
End-driven FK chains show delayed sliding onset from internal elasticity, corresponding to higher temperatures or slower driving (p<0.01).
Uniformly driven FK chains reduce breakloose peaks while maintaining local stick-slip dynamics, indicating complex contact interactions.