A simplified theory of electroadhesion for rough interfaces
| Autor: | Antonio Papangelo, Michele Ciavarella |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Surface (mathematics)
Truncation lcsh:Mechanical engineering and machinery Ingenieurwissenschaften [620] 02 engineering and technology Surface finish Roughness models Industrial and Manufacturing Engineering law.invention JKR model Electroadhesion 0203 mechanical engineering law lcsh:TJ1-1570 General Materials Science electroadhesion DMT model soft matter roughness models Representation (mathematics) Technik [600] Physics Bearing (mechanical) Mechanical Engineering 600: Technik Mechanics Tribology 021001 nanoscience & nanotechnology Computer Science Applications 620: Ingenieurwissenschaften 020303 mechanical engineering & transports ddc:620 Soft matter 0210 nano-technology Contact area ddc:600 |
| Zdroj: | Frontiers in Mechanical Engineering 6: 27 1-9 (2020) Frontiers in Mechanical Engineering, Vol 6 (2020) |
| Popis: | Electroadhesion is a very hot topic in tribology due to its implications for the science of surface haptics. Building on theories of Persson, we develop a simpler theory for electroadhesion between rough surfaces using the bearing area model of Ciavarella. The theory is derived for the cases of conducting and insulating bodies and shows that pull-off forces depend mostly on the applied voltage, the surface root mean square (RMS) height, and the longest wavelength in the surface representation. However, the real contact area and friction additionally depend on rms slopes and hence on truncation of the roughness spectrum. Two stickiness criteria are derived based on the present theory and on the energy balance proposed by Persson and Tosatti. The coefficient of friction decays with the normal pressure, tending to a plateau in a manner consistent with existing experiments. Italian Ministry of Education, University and Research Deutsche Forschungsgemeinschaft (DFG) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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