Academic literature on the topic 'Friction in biological systems'

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Journal articles on the topic "Friction in biological systems"

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WIERZCHOLSKI, Krzysztof, and Andrzej MISZCZAK. "IMPACT OF ADHESION AND VISCOSITY FORCES ON FRICTION VARIATIONS IN BIO-TRIBOLOGICAL SYSTEMS." Tribologia 278, no. 2 (2018): 139–51. http://dx.doi.org/10.5604/01.3001.0012.6987.

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The classical theory of lubrication holds that the lubricant dynamic viscosity increments cause the increments of hydrodynamic pressure, as well as friction forces and wear. In the case of high values of hydrodynamic pressure, it very often has a significant impact on the friction coefficient. New achievements in the field of micro-and nano-tribology provide for new hypotheses on the decrements and increments of the friction coefficient in the case of the lubricant viscosity increments. Experimental investigations have shown that, even in the case of decrements of the friction coefficient with
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Tramsen, Halvor T., Stanislav N. Gorb, Hao Zhang, Poramate Manoonpong, Zhendong Dai, and Lars Heepe. "Inversion of friction anisotropy in a bio-inspired asymmetrically structured surface." Journal of The Royal Society Interface 15, no. 138 (2018): 20170629. http://dx.doi.org/10.1098/rsif.2017.0629.

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Friction anisotropy is an important property of many surfaces that usually facilitate the generation of motion in a preferred direction. Such surfaces are very common in biological systems and have been the templates for various bio-inspired materials with similar tribological properties. So far friction anisotropy is considered to be the result of an asymmetric arrangement of surface nano- and microstructures. However, here we show by using bio-inspired sawtooth-structured surfaces that the anisotropic friction properties are not only controlled by an asymmetric surface topography, but also b
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Nosonovsky, Michael, and Bharat Bhushan. "Thermodynamics of surface degradation, self-organization and self-healing for biomimetic surfaces." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 367, no. 1893 (2009): 1607–27. http://dx.doi.org/10.1098/rsta.2009.0009.

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Friction is a dissipative irreversible process; therefore, entropy is produced during frictional contact. The rate of entropy production can serve as a measure of degradation (e.g. wear). However, in many cases friction leads to self-organization at the surface. This is because the excess entropy is either driven away from the surface, or it is released at the nanoscale, while the mesoscale entropy decreases. As a result, the orderliness at the surface grows. Self-organization leads to surface secondary structures either due to the mutual adjustment of the contacting surfaces (e.g. by wear) or
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Sekhar, JA. "Tunable coefficient of friction with surface texturing in materials engineering and biological systems." Current Opinion in Chemical Engineering 19 (March 2018): 94–106. http://dx.doi.org/10.1016/j.coche.2017.12.002.

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Qian, Shanhua, Liguo Liu, Zifeng Ni, and Yong Luo. "Experimental investigation of the dynamic properties of natural cartilage under reciprocating sliding at two typical rubbing pairs." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 233, no. 9 (2019): 1318–26. http://dx.doi.org/10.1177/1350650119836815.

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Natural cartilage is a multiporous viscoelastic biological material with extremely high water content and a macroscopically curved surface. Due to the sampling frequency limitations of typical data systems, the dynamic properties of the contact of cartilage against other surfaces, including rubbing surface characteristics and coefficient of friction, is still not completely understood. In this study, cartilage samples were retrieved from 18- to 24-month-old bovine femora. Contact displacement and coefficient of friction of two typical rubbing pairs of for cartilage-on-glass and cartilage-on-ca
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Enders, S., N. Barbakadse, S. N. Gorb, and E. Arzt. "Exploring Biological Surfaces by Nanoindentation." Journal of Materials Research 19, no. 3 (2004): 880–87. http://dx.doi.org/10.1557/jmr.2004.19.3.880.

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With the help of instrumented indentation, the mechanical behavior of a variety of biological systems was studied: the waxy zone of the pitcher plant (Nephenthes alata) adapted for attachment prevention, the head-to-thorax articulation system of a beetle (Pachnoda marginata) as an example of friction minimization, and the wing arresting system of the dung beetle (Geotrupes stercorarius) adapted for mechanical interlocking. We demonstrate that nanoindentation can successfully be applied to compliant and highly structured biological composite materials. Measuring the mechanical performance of th
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Reddy, J. Mohan, and Horacio Apolayo. "Friction Correction Factor For Center‐Pivot Irrigation Systems." Journal of Irrigation and Drainage Engineering 114, no. 1 (1988): 183–85. http://dx.doi.org/10.1061/(asce)0733-9437(1988)114:1(183).

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Shivalinga, BM, H. Jyothikiran, Sachin Bansal, and Azeem Farhan. "A Comparison of Frictional Resistance between Active and Passive Self-ligating Brackets with Conventional Bracket Systems." World Journal of Dentistry 2, no. 4 (2011): 302–8. http://dx.doi.org/10.5005/jp-journals-10015-1102.

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ABSTRACT Friction, though, is an inseparable and undeniable orthodontic entity that should be minimized, if not eliminated, for obtaining an optimal biological tissue response. Aim The present study compared the frictional resistance of active (time- 2, In-Ovation R) and passive (Damon SL-2, Smart clip) self-ligating brackets with conventional titanium, fiberglass and ceramic brackets under dry and wet conditions with artificial saliva using universal testing machine. Methods Modified Tidy's jig was constructed to simulate clinical situation. A total of 200 samples were tested. Specimens were
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van den Boogaart, Luc M., Julian K. A. Langowski, and Guillermo J. Amador. "Studying Stickiness: Methods, Trade-Offs, and Perspectives in Measuring Reversible Biological Adhesion and Friction." Biomimetics 7, no. 3 (2022): 134. http://dx.doi.org/10.3390/biomimetics7030134.

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Controlled, reversible attachment is widely spread throughout the animal kingdom: from ticks to tree frogs, whose weights span from 2 mg to 200 g, and from geckos to mosquitoes, who stick under vastly different situations, such as quickly climbing trees and stealthily landing on human hosts. A fascinating and complex interplay of adhesive and frictional forces forms the foundation of attachment of these highly diverse systems to various substrates. In this review, we present an overview of the techniques used to quantify the adhesion and friction of terrestrial animals, with the aim of informi
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Aihara, Kazuyuki, and Hideyuki Suzuki. "Theory of hybrid dynamical systems and its applications to biological and medical systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368, no. 1930 (2010): 4893–914. http://dx.doi.org/10.1098/rsta.2010.0237.

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In this introductory article, we survey the contents of this Theme Issue. This Theme Issue deals with a fertile region of hybrid dynamical systems that are characterized by the coexistence of continuous and discrete dynamics. It is now well known that there exist many hybrid dynamical systems with discontinuities such as impact, switching, friction and sliding. The first aim of this Issue is to discuss recent developments in understanding nonlinear dynamics of hybrid dynamical systems in the two main theoretical fields of dynamical systems theory and control systems theory. A combined study of
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Dissertations / Theses on the topic "Friction in biological systems"

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Ismail, Mohd. "Shock isolation systems incorporating Coulomb friction." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/348953/.

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This study investigates a novel approach to the problem of shock isolation. The questions considered are whether friction produces a better performance in terms of reduced response during a shock compared to viscous damping and a lower residual response after the shock. To gain physical insight, a single degree of freedom model with friction applied to the isolated mass is analysed. It serves as a benchmark to the performance of a two degree of freedom model where friction is applied to a secondary mass. The isolation system performance is then quantified. For the two degree of freedom system
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Lawrence, Jason William. "Improving motion of systems with coulomb friction." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16012.

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Altamirano, Gregory L. "Friction Response Approximation Method for Nonlinear Systems." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu158584450899486.

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Hagler, Lisle Bruce. "Friction induced vibration in disk brake systems /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/7119.

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Fan, Peng. "Miniaturised biological diagnostic systems." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/6856/.

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Perry, Carole Celia. "Silicification in biological systems." Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:ae665ac4-63eb-4963-845a-d2db6aea31a6.

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This thesis is concerned with the formation and structure of silicified deposits in biology. The major system studied is silicified macrohairs from the lemma of the grass Phalaris canariensis L. The macrohairs consist of silica and polysaccharides. Chemical and structural studies on the mineral phase utilised electron microscopy (transmission (TEM), scanning (SEM) and ultra high resolution (HRTEM)), energy disoersive X-ray analysis (EDXA), solid state nuclear magnetic resonance ( ᷣ⁹ Si nmr), infrared spectroscopy, birefringence and nitrogen adsorption experiments. Results showed that the sili
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Satam, Sayali S. "Optimization of Wet Friction Systems Based on Rheological, Adsorption, Lubricant and Friction Material Characterization." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1503358825451407.

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Baykara, Berkay. "Control Of Systems Under The Effect Of Friction." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611327/index.pdf.

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Precision control under the effect of friction requires an effective compensation of friction. Since friction has a complex and highly nonlinear behaviour, it is generally insufficient to represent the friction in a dynamic control system only with a linear viscous model, which is mostly valid in high-velocity motions. Especially when the control system moves near zero velocity regions or changes the direction of motion, an accurate modelling of friction including the lowvelocity dynamic behaviour is a prerequisite to obtain a more complete and realistic dynamic model of the system. Furthermor
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Sepehri, Ali. "MULTI-SCALE DYNAMICS OF MECHANICAL SYSTEMS WITH FRICTION." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/dissertations/205.

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Contact between rough surfaces occurs in numerous engineering systems and in many instances influences the macro behavior of the system. In many instances, the interaction between rough surfaces, affect the macro behavior of the system. Effective treatment of systems containing rough surface contact requires multiscale modeling and analysis approach. It is the goal of this research to develop simple methods for treating contact of rough surfaces so as to facilitate multiscale analysis of systems containing rough surface contact and friction. This dissertation considers a multi-scale approac
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Reichenbach, Tobias. "Dynamic patterns of biological systems." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-84101.

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Books on the topic "Friction in biological systems"

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Gorb, Stanislav. Adhesion and friction in biological systems. Springer, 2012.

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Sergienko, Vladimir P., and Sergey N. Bukharov. Noise and Vibration in Friction Systems. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-11334-0.

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Marten, Mark R., Tai Hyun Park, and Teruyuki Nagamune, eds. Biological Systems Engineering. American Chemical Society, 2002. http://dx.doi.org/10.1021/bk-2002-0830.

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Haefner, James W. Modeling Biological Systems. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-4119-6.

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Fomina, Irina R., Karl Y. Biel, and Vladislav G. Soukhovolsky, eds. Complex Biological Systems. John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119510390.

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von Byern, Janek, and Ingo Grunwald, eds. Biological Adhesive Systems. Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-7091-0286-2.

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Haefner, James W. Modeling Biological Systems. Springer US, 2005. http://dx.doi.org/10.1007/b106568.

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Channa, Reddy C., Hamilton Gordon A, Madyastha K. M, National Science Foundation (U.S.), and Symposium on Biological Oxidation Systems (1989 : Bangalore, India), eds. Biological oxidation systems. Academic Press, 1990.

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Braiman, Y., J. M. Drake, F. Family, and J. Klafter, eds. Dynamics and Friction in Submicrometer Confining Systems. American Chemical Society, 2004. http://dx.doi.org/10.1021/bk-2004-0882.

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Anh, Le xuan. Dynamics of Mechanical Systems with Coulomb Friction. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-36516-7.

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Book chapters on the topic "Friction in biological systems"

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Filippov, Alexander E., and Stanislav N. Gorb. "Anisotropic Friction in Biological Systems." In Biologically-Inspired Systems. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-41528-0_5.

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Scherge, Matthias, and Stanislav S. Gorb. "Biological Frictional and Adhesive Systems." In Biological Micro- and Nanotribology. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04431-5_3.

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Smolin, Alexey Yu, Galina M. Eremina, and Evgeny V. Shilko. "A Tool for Studying the Mechanical Behavior of the Bone–Endoprosthesis System Based on Multi-scale Simulation." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_5.

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AbstractThe chapter presents recent advances in developing numerical models for multiscale simulation of the femur–endoprosthesis system for the case of hip resurfacing arthroplasty. The models are based on the movable cellular automaton method, which is a representative of the discrete element approach in solid mechanics and allows correctly simulating mechanical behavior of a variety of elastoplastic materials including fracture and mass mixing. At the lowest scale, the model describes sliding friction between two rough surfaces of TiN coatings, which correspond to different parts of the friction pair of hip resurfacing endoprosthesis. At this scale, such parameters of the contacting surfaces as the thickness, roughness, and mechanical properties are considered explicitly. The next scale of the model corresponds to a resurfacing cap for the femur head rotating in the artificial acetabulum insert. Here, sliding friction is explicitly computed based on the effective coefficient of friction obtained at the previous scale. At the macroscale, the proximal part of the femur with a resurfacing cap is simulated at different loads. The bone is considered as a composite consisting of outer cortical and inner cancellous tissues, which are simulated within two approaches: the first implies their linear elastic behavior, the second considers these tissues as Boit’s poroelastic bodies. The later allows revealing the role of the interstitial biological fluid in the mechanical behavior of the bone. Based on the analysis of the obtained results, the plan for future works is proposed.
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Tokita, Masayuki. "Gel-Solvent Friction." In Rheology of Biological Soft Matter. Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56080-7_3.

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Scherge, Matthias, and Stanislav S. Gorb. "Case Study II: Friction." In Biological Micro- and Nanotribology. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04431-5_10.

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Persson, Bo N. J. "Novel Sliding Systems." In Sliding Friction. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04283-0_14.

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Persson, Bo N. J. "Novel Sliding Systems." In Sliding Friction. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-03646-4_14.

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Bastien, Jérôme, Frédéric Bernardin, Claude-Henri Lamarque, and Noël Challamel. "Systems with Friction." In Non-smooth Deterministic or Stochastic Discrete Dynamical Systems. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118604045.ch5.

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Ludema, Kenneth C., and Oyelayo O. Ajayi. "Example of Tribological Systems." In Friction, Wear, Lubrication. CRC Press, 2018. http://dx.doi.org/10.1201/9780429444715-15.

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Popov, Valentin L. "Lubricated Systems." In Contact Mechanics and Friction. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10803-7_14.

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Conference papers on the topic "Friction in biological systems"

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Cui, Shuai, and Wei Tech Ang. "Robotic Micromanipulation of Biological Cells with Friction Force-Based Rotation Control." In 2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2020. http://dx.doi.org/10.1109/iros45743.2020.9341704.

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Le Houérou, Vincent, Fabrice Morestin, Christian Gauthier, and Marie-Christine Baietto. "Friction of Rough Soft Matter Contacts: Local Investigations Through Image Correlation Technique." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20204.

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The friction induced in contacts is a key feature concerning functionality of mechanisms, reliability of systems, energy consumption… Friction on soft matter occurs in many applications (tire/road contacts, touch-sensitive exploration, micro-manipulation of biological items…) as well as in nature. The latter offers various examples of how a topographic surface pattern may control friction. The result is a complex combination of phenomena: adhesion, elastic ratio of bodies in contact, viscous flow, plasticity occurrence, and topography interaction. The role of this latter phenomenon essentially
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Veeregowda, Deepak H., Jagdish P. Sharma, Ronald A. Wagstaff, and Qian J. Wang. "Tribo-Diagnostics of Nanoparticle Coated Smart Surface Using Phase Fluctuation Based Processor." In ASME/STLE 2007 International Joint Tribology Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ijtc2007-44390.

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Smart material surfaces/interfaces are playing important role in making hybrid nano particulate coated sensors and smart composite structures for applications in space, defense, infrastructure and biological system. The reliability and performance of these coatings on the smart surface depends upon the stability and life of their nano/micro-structures and interface properties. Atomic Force Microscopy is used extensively to study friction, wear and surface forces. In this paper a tool has been developed to have an insight of signals associated with friction and tribo-acoustics. This research ai
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Segal, David, and Leonid Kandel. "Orthopedics and Tribology." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59310.

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Mammalian joints, including human joints, are mostly synovial joints, which have low friction and are long lasting. With life expectancy on the rise, we are facing an increase in joint “wear and tear” resulting in cartilage damage. Biological repair has its limitations and when the articular cartilage is severely affected joint replacement is the solution. The longevity of artificial joints is also limited requiring new avenues of research to extend their durability and reduce the cost of repeated operations.
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Monsef Khoshhesab, Mona, and Yaning Li. "Mechanical Modeling of Fractal Interlocking." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71844.

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Topological interlocking is an effective joining approach in both natural and engineering systems. Especially, hierarchical/fractal interlocking are found in many biological systems and can significantly enhance the system mechanical properties. Inspired by the hierarchical/ fractal topology in nature, mechanical models for Koch fractal interlocking were developed as an example system to better understand the mechanics of fractal interlocking. In this investigation, Koch fractal interlocking with different number of iterations N were designed. Theoretical contact mechanics model was used to an
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Nosonovsky, Michael. "Towards “Green Tribology”: Self-Organization at the Sliding Interface for Biomimetic Surfaces." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-25047.

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“Green tribology” is the concept that was introduced in 2009 by the founder of Tribology, Prof. P. Jost, who defined it as “the science and technology of the tribological aspects of ecological balance and of environmental and biological impacts.” This includes tribological technology that mimics living nature (biomimetic surfaces) and thus is expected to be environment-friendly, the control of friction and wear that is of importance for energy conservation and conversion, environmental aspects of lubrication and surface modification techniques, and tribological aspects of green applications su
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Mohammadi, Alireza. "Design of Propulsive Virtual Holonomic Constraints for Planar Snake Robots." In ASME 2017 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/dscc2017-5159.

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Virtual holonomic constraints (VHCs) framework is a recent control paradigm for systematic design of motion controllers for wheel-less biologically inspired snake robots. Despite recent developments for VHC-based control systems for ground and underwater robotic snakes, they employ only two families of propulsive virtual holonomic constraints, i.e., lateral undulatory and eel-like virtual constraints. In this paper we extend the family of propulsive virtual constraints that can be used with VHC-based controllers by presenting a VHC analysis and synthesis methodology for planar snake robots tha
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Haque, Md Rejwanul, Hao Zheng, Saroj Thapa, Geza Kogler, and Xiangrong Shen. "A Robotic Ankle-Foot Orthosis for Daily-Life Assistance and Rehabilitation." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9242.

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The ankle plays an important role in human movement as it supplies the majority of energy to support an individual’s walking. In this paper, the authors present a robotic ankle-foot orthosis (RAFO), which is essentially a wearable robot that acts in parallel to the user’s biological ankle for motion assistance. Unlike most of the existing robotic ankle-foot ortheses, the RAFO in this paper is a compact and portable assistive device with full energy autonomy, which enables its use in a user’s daily life without the typical limitation associated with tethered operation. The primary performance g
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Pryputniewicz, Ryszard J., Dariusz R. Pryputniewicz, and Emily J. Pryputniewicz. "Effect of Process Parameters on TED-Based Q-Factor of MEMS." In ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ipack2007-33094.

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Continued advances in microelectromechanical systems (MEMS) technology have led to development of numerous applications including, but not limited to: automotive, communication, information technology, deep-space, medical, safety, national security, etc. These developments are being made possible because of creative designs and novel packaging based on use of some of the most sophisticated analytical and experimental tools available today. These tools are also employed to overcome limitations due to inherent behavior of materials fabricated into miniature shapes subjected to extremely harsh op
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Dorsch, Daniel S., and Amos G. Winter. "Design of a Biologically Inspired Underwater Burrowing Robot That Utilizes Localized Fluidization." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-47459.

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The Atlantic razor clam (Ensis directus) digs by contracting its valves, fluidizing the surrounding soil and reducing burrowing drag. Moving through a fluidized, rather than static, soil requires energy that scales linearly with depth, rather than depth squared. In addition to providing an advantage for the animal, localized fluidization may provide significant value to engineering applications such as vehicle anchoring and underwater pipe installation. This paper presents the design of a self-actuated, radially expanding burrowing mechanism that utilizes E. directus burrowing methods. The dev
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Reports on the topic "Friction in biological systems"

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Akay, Adnan, and Jerry Griffin. Measurement of Friction in Dynamic Systems. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada418183.

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Krim, Jacqueline. Friction, Adhesion and Lubrication of Nanoscale Mechanical Systems. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada363467.

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Singh, Rajendra. Dynamic Analysis of Sliding Friction in Rotorcraft Geared Systems. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada440286.

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Howell, Calvin R., Chantal D. Reid, and Andrew G. Weisenberger. Radionuclide Imaging Technologies for Biological Systems. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1244531.

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Faissol, D. Learning Interactions in Complex Biological Systems. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1573143.

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Endy, Drew. Design and Fabrication of Integration Biological Systems. Defense Technical Information Center, 2008. http://dx.doi.org/10.21236/ada500552.

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FLORENCE UNIV (ITALY). Metal Ions In Biological Systems. EUROBIC II. Defense Technical Information Center, 1994. http://dx.doi.org/10.21236/ada338576.

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Michael Killian. Efficiency Improvement through Reduction in Friction and Wear in Powertrain Systems. Office of Scientific and Technical Information (OSTI), 2009. http://dx.doi.org/10.2172/989104.

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Jivkov, Venelin, and Vatko Draganov. Controlled Friction Clutch for Hybrid Propulsion Mechanical Systems with Kinetic Energy Accumulator. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2020. http://dx.doi.org/10.7546/crabs.2020.07.13.

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Gatley, S. J. Radiotracers For Lipid Signaling Pathways In Biological Systems. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1326385.

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