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Evidence of friction reduction in laterally graded materials
- Source :
- Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 2443-2456 (2018)
- Publication Year :
- 2018
- Publisher :
- Beilstein Institut, 2018.
-
Abstract
- In many biological structures, optimized mechanical properties are obtained through complex structural organization involving multiple constituents, functional grading and hierarchical organization. In the case of biological surfaces, the possibility to modify the frictional and adhesive behaviour can also be achieved by exploiting a grading of the material properties. In this paper, we investigate this possibility by considering the frictional sliding of elastic surfaces in the presence of a spatial variation of the Young’s modulus and the local friction coefficients. Using finite-element simulations and a two-dimensional spring-block model, we investigate how graded material properties affect the macroscopic frictional behaviour, in particular, static friction values and the transition from static to dynamic friction. The results suggest that the graded material properties can be exploited to reduce static friction with respect to the corresponding non-graded material and to tune it to desired values, opening possibilities for the design of bio-inspired surfaces with tailor-made tribological properties.
- Subjects :
- Functionally graded materials
Materials science
Friction
General Physics and Astronomy
Modulus
02 engineering and technology
lcsh:Chemical technology
lcsh:Technology
Physics and Astronomy (all)
0203 mechanical engineering
Numerical simulations
lcsh:TP1-1185
General Materials Science
Dynamical friction
Electrical and Electronic Engineering
Composite material
lcsh:Science
Bio-inspired materials
Materials Science (all)
Structural organization
lcsh:T
Tribology
021001 nanoscience & nanotechnology
Static friction
lcsh:QC1-999
020303 mechanical engineering & transports
Friction reduction
lcsh:Q
Adhesive
0210 nano-technology
Material properties
lcsh:Physics
Subjects
Details
- ISSN :
- 21904286
- Volume :
- 9
- Database :
- OpenAIRE
- Journal :
- Beilstein Journal of Nanotechnology
- Accession number :
- edsair.doi.dedup.....e37b30d83935c64c08f44ae07e5ef869