I need to model the macro and microscale contact mechanics phenomenon for a seal-rod interface. what is the difference between the two?
Dear Kaustubh Kulkarni,
Could you kindly elaborate the problem? The difference between macro and micro is in the scale of the problem and the link in between them. Therefore, you need establish a proper scale linking framework that can map the field variables from macro to micro and vice-versa.
Best Regards,
Kaushik Mukherjee
I agree with answer presented by Kaushik Mukherjee because the problem is not outlook enough. But in tribology (contact mechanics) the microscale relates usually to local phenomena such as contact of two asperities. When we analyse the interaction of two smooth surfaces of two deformable bodies (not only elastic one) , situation may be interpreted in terms of macroscale contact.
Dear Kaushik Mukherjee and Serge V. Shil’ko
I am investigating the contact mechanics phenomenon between seal-rod interface for reciprocating hydraulic seals. My objective is to investigate the tribological characteristics of seals.
In your case, evidently, the macroscale analysis must include the solution of contact interaction of rod as a rigid cylyndrical body and sealing as an elastic counterbody. At the first approximation, probably, we may reduce this problem to an axisymmetric case. For detailed analysis, for example, aimed on the study of real contact area, leakage and wear processes or local damage effect, it should be elaborate the microscopic models taking into account small surface objects such asperities, cavities and other irregularities caused by structural features of real sealing, as well as techological and exploitation (wear, failure) reasons.
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