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research-article

Storage and Loss Characteristics of Coupled Poroviscoelastic and Hydrodynamic Systems for Biomimetic Applications

[+] Author and Article Information
Patrick Smyth

Georgia Institute of Technology, Department of Mechanical Engineering, Atlanta, Georgia 30332
pasmyth4@gatech.edu

Itzhak Green

Georgia Institute of Technology, Department of Mechanical Engineering, Atlanta, Georgia 30332
itzhak.green@me.gatech.edu

1Corresponding author.

ASME doi:10.1115/1.4038958 History: Received October 17, 2017; Revised December 17, 2017

Abstract

Biotribology and biomechanics are evolving fields that draw from many disciplines. A natural relationship particularly exists between tribology and biology because many biological systems rely on tribophysics for adhesion, lubrication, and locomotion. This leads to many biomimetic inspirations and applications. The current study looks to mimic the function of articular cartilage in purely mechanical systems. To accomplish this goal, a novel coupling of phenomena is utilized. A flexible, porous, viscoelastic, material is paired with a hydrodynamic load to access the feasibility and benefit of a biomimetic thrust bearing. This study presents the dynamic properties of the coupled system, as determined from transient to steady operating states. The results indicate that bio-inspired bearings have application in certain tribological systems, including biomechanical joint replacements, dampers, flexible rotordynamic bearings and seals.

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