Rheological Characteristics of Lubricants and Soft Tribo-Materials
A special issue of Lubricants (ISSN 2075-4442).
Deadline for manuscript submissions: closed (10 May 2024) | Viewed by 10229
Special Issue Editors
Interests: tribology; viscoelasticity; wear; friction; bio/nano-lubricants
Interests: rheology; tribology; viscoelasticity; wear; friction; complex fluids; lubricants
Interests: thermal effects in hydrodynamic journal and thrust bearings; non-laminar regime; transient effects; risk of bearing seizure; misalignment effects; thermal and mechanical deformations; dynamically loaded bearings; mixed lubrication; lubrication of textured surfaces and wear of hydrodynamic bearings; PTFE and PEEK layered journal and thrust tilting pad bearings; theoretical analyses and numerical simulations under THD or TEHD regime and experimental analyses
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Special Issue Information
Dear Colleagues,
Lubrication plays a key role in the performance of tribosystems. Lubricants are used to form a protecting layer between rubbing surfaces, which allows smooth operation and maintaining of reliable machine functions, while contributing to energy savings. Conventional lubricants are either low-molecular weight liquids (such as mineral oils, synthetic oil, silicon fluids, water, etc.) or soft solids (greases), as well as some high-molecular weight ones such as gels, whose viscosity is overall dependent on temperature, pressure and rate of deformation. Moreover, with the advent of nanoparticles that may be suspended in conventional lubricating media, new lubricants are emerging whose flow behavior may be complex. Thus, the rheological behavior of lubricants may be Newtonian or non-Newtonian in nature. Rheology is the science of flow and deformation of matter: whenever a fluid is subjected to shear or normal stresses in a process, the knowledge of its rheological (viscoelastic) properties is a must to achieve a reliable description of its performance. In this sense, lubrication is not an exception, as viscoelastic characteristics of soft tribo-materials (i.e., polymers, elastomers, hydro-gels, etc.) and boundary conditions (i.e., slip or no-slip) are relevant for the contact mechanics and tribological performance in many modern applications such as tire-road contacts, dynamic sealing, food tribology, skin tribology, human joints tribology, etc.
The objective of this Lubricants special topic is to collect and present a series of state-of-the-art and cutting-edge developments, innovations and discoveries on the rheological/viscoelastic behavior of lubricants and/or soft tribo-materials with an impact on the overall tribological performance, reliability and sustainability of tribo-systems. Contributions reporting on theoretical, numerical and/or experimental approaches in the form of original research, case studies, reviews, methods or research reports are very welcome. The article collection encompasses, but is not limited to, the following research themes or areas with special impact on the behavior of tribo-systems:
- Rheology of lubricants.
- Rheology of bio/nano lubricants.
- Rheology of soft tribo-materials: elastomers, polymers, skin, etc.
- Lubrication of soft materials.
- Viscoelastic lubrication.
- Influence of temperature and pressure on rheology of lubricants.
- Sliding interfaces of viscoelastic materials: dry or lubricated contacts.
- Slip of lubricants at solid boundaries.
Dr. Leonardo Farfan Cabrera
Prof. Dr. José Pérez-González
Prof. Dr. Michel Fillon
Prof. Dr. Yanshuang Wang
Guest Editors
Manuscript Submission Information
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Keywords
- rheology
- tribology
- lubricants
- viscosity
- viscoelasticity
- elastomers
- soft solids
- friction
- wear
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