| Autor: |
Mathews, Rojin, Sreesastha Ram, T. R., Jayadeep, U. B. |
| Zdroj: |
Transactions of the Indian Institute of Metals; Sep2023, Vol. 76 Issue 9, p2377-2382, 6p |
| Abstrakt: |
Adhesion is the attraction between dissimilar atoms of surfaces or particles, wherein a normal force is required to separate them. Various reasons for adhesion include electrostatic force, capillary force and hydrophobic force. Adhesion due to van der Waals force caused by the attraction between permanent or induced atomic/molecular dipoles has a special significance as it is always present. Adhesion plays a prominent role in the contact interactions at small scales, and understanding them is important in studies on the origin of friction and wear. The finite element method is employed to analyse adhesive contact, wherein the adhesive force is modelled as a body force derived from Lennard–Jones potential. Adhesive contact between an elastic cube (asperity) and the surface of a semi-infinite rigid body has been analysed using this approach. The numerical results obtained are compared with the analytical expressions for interaction free energy based on the idealized power-law forms proposed by Parsegian. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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