Journal
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
Volume 9, Issue -, Pages 2443-2456Publisher
BEILSTEIN-INSTITUT
DOI: 10.3762/bjnano.9.229
Keywords
bio-inspired materials; friction; functionally graded materials; numerical simulations
Funding
- Bonfiglioli Riduttori SpA
- European Commission [732344, 785219]
- project Metapp [CSTO160004]
- Fondazione San Paolo
- FET Proactive Neurofibres grant [732344]
- Italian Ministry of Education, University and Research (MIUR) under 'Departments of Excellence' grant [L. 232/2016]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available