Searched for: subject%3A%22Friction%22
(1 - 20 of 126)

Pages

document
Guo, Feng (author), Cheng, Gang (author), Pang, Y. (author)
Aiming at a 5-DOF hybrid optical mirror polishing robot, the explicit dynamic model considering the joint friction is established and the inertia coupling distribution is studied. Firstly, the kinematics of the manipulator is solved based on closed-loop vector method, and the dynamic model is established with Newton-Euler method based on the...
journal article 2022
document
Marino, Luca (author), Cicirello, A. (author)
This paper proposes an approach for the determination of the analytical boundaries of continuous, stick-slip and no motion regimes for the steady-state response of a multi-degree-of-freedom (MDOF) system with a single Coulomb contact to harmonic excitation. While these boundaries have been previously investigated for single-degree-of-freedom ...
journal article 2021
document
Gonzalez Acosta, J.L. (author), Vardon, P.J. (author), Hicks, M.A. (author)
An implicit contact algorithm for the material point method (MPM) has been developed to simulate contact. This allows recently developed implicit MPM codes to simulate large-scale deformations and interaction with external bodies. The performance of the method has been investigated and compared to an existing explicit method using benchmark...
journal article 2021
document
Hunfeld, Luuk B. (author), Chen, J. (author), Niemeijer, André R. (author), Ma, Shengli (author), Spiers, Christopher J. (author)
Rock materials show dramatic dynamic weakening in large-displacement (m), high-velocity (∼1 m/s) friction experiments, providing a mechanism for the generation of large, natural earthquakes. However, whether such weakening occurs during induced M3-4 earthquakes (dm displacements) is unknown. We performed rotary-shear experiments on simulated...
journal article 2021
document
Eivani, A.R. (author), Tabatabaei, F. (author), Khavandi, A. R. (author), Tajabadi, M. (author), Mehdizade, M. (author), Jafarian, H. R. (author), Zhou, J. (author)
A composite material based on the WE43 magnesium alloy and containing nano-sized hardystonite ceramic particles was processed by means of friction stir processing (FSP). Compressive strength and strain-at-failure of the WE43 alloy increased as a combined result of FSP and nanoparticle reinforcement. The results of potentiondynamic...
journal article 2021
document
Huloux, Nicolas (author), Bernard, Corentin (author), Wiertlewski, M. (author)
Ultrasonic surface-haptic touchscreens produce compelling tactile sensations directly on the users' fingertips. The tactile sensations stem from the modulation of friction produced by acoustic radiation pressure, which reduces the contact between the skin and the glass plate. During this process, some of the vibrations are partly absorbed by...
journal article 2021
document
Cabboi, A. (author), Kamphuis, Thijs (author), van Veldhuizen, E. (author), Segeren, M.L.A. (author), Hendrikse, H. (author)
An alternative option to the traditional grouted joint for wind turbines is a direct steel-to-steel connection, also known as slip joint. In a recently published work, a proof of concept of a vibration-assisted installation and decommissioning technique of a slip joint was illustrated. Leveraging on the obtained results, the current study shows...
journal article 2021
document
Eivani, A.R. (author), Vafaeenezhad, H. (author), Jafarian, H. R. (author), Zhou, J. (author)
The faults in welding design and process every so often yield defective parts during friction stir welding (FSW). The development of numerical approaches including the finite element method (FEM) provides a way to draw a process paradigm before any physical implementation. It is not practical to simulate all possible designs to identify the...
journal article 2021
document
Amador, G.J. (author), van Dijk, Dennis (author), Kieffer, R.Y. (author), Aubin-Tam, M.E. (author), Tam, D.S.W. (author)
Vital biological processes, such as trafficking, sensing, and motility, are facilitated by cellular lipid membranes, which interact mechanically with surrounding fluids. Such lipid membranes are only a few nanometers thick and composed of a liquid crystalline structure known as the lipid bilayer. Here, we introduce an active, noncontact, two...
journal article 2021
document
Vijay Dixit, V. (author), Nuijens, Louise (author), Helfer, K.C. (author)
It is well known that subtropical shallow convection transports heat and water vapor upwards from the surface. It is less clear if it also transports horizontal momentum upwards to significantly affect the trade winds in which it is embedded. We utilize unique multiday large-eddy simulations run over the tropical Atlantic with ICON-LEM to...
journal article 2021
document
Gong, Y. (author), van Engelenburg, S.H. (author), Janssen, M.F.W.H.A. (author)
Companies increasingly tender knowledge-intensive tasks using crowdsourcing platforms to gain access to scarce knowledge and skills otherwise out of reach, and in this way, gaining competitive advantage. Despite its potential, existing crowdsourcing platforms encounter several challenges, including (1) fragmentation of expertise, as there are...
journal article 2021
document
Andrews, D. R. (author), Bourne, N. K. (author), Brown, E. N. (author), Dear, J. P. (author), Dickson, P. (author), Freeman, C. J. (author), Goveas, S. G. (author), Hauser, H. (author), van der Zwaag, S. (author)
Professor John Edwin Field passed away on October 21st, 2020 at the age of 84. Professor Field was widely regarded as a leader in high-strain rate physics and explosives. During his career in the Physics and Chemistry of Solids (PCS) Group of the Cavendish Laboratory at Cambridge University, John made major contributions into our...
review 2021
document
Huloux, Nicolas (author), Willemet, L. (author), Wiertlewski, M. (author)
The contact between the fingertip and an object is formed by a collection of micro-scale junctions, which collectively constitute the real contact area. This real area of contact is only a fraction of the apparent area of contact and is directly linked to the frictional strength of the contact (i.e., the lateral force at which the finger...
journal article 2021
document
Lampaert, S.G.E. (author)
The bearing and the seal are two commonly used tribological components since nearly all moving machinery relies on them for proper operation. Even a small improvement in these components can have a big impact on both the market and the environment. The two main problems of these components are wear and friction. In addition, seals suffer from...
doctoral thesis 2020
document
Vasić, Borislav (author), Ralević, Uroš (author), Zobenica, Katarina Cvetanović (author), Smiljanić, Milče M. (author), Gajić, Radoš (author), Spasenović, Marko (author), Vollebregt, S. (author)
Chemical vapour deposition (CVD) is a promising method for producing large-scale graphene (Gr). Nevertheless, microscopic inhomogeneity of Gr grown on traditional metal substrates such as copper or nickel results in a spatial variation of Gr properties due to long wrinkles formed when the metal substrate shrinks during the cooling part of the...
journal article 2020
document
Sakes, A. (author), van de Steeg, Ivo A. (author), de Kater, E.P. (author), Posthoorn, P. (author), Scali, M. (author), Breedveld, P. (author)
Currently existing tubular transportation systems for the extraction of large tissue masses during Minimal Invasive Surgery (MIS) are subjected to a large amount of operating limitations. In this study, a novel transportation mechanism (patented) was developed inspired by the egg-laying structure of wasps. The developed mechanism consists of...
journal article 2020
document
Bruynseels, K.R.C. (author)
Synthetic biology, as an engineering approach to biological systems, has the potential to disruptively innovate the development of vaccines, therapeutics, and diagnostics. Data accessibility and differences in data-usage capabilities are important factors in shaping this innovation landscape. In this paper, the data that underpin synthetic...
journal article 2020
document
Molenkamp, T. (author), Tsetas, A. (author), Tsouvalas, A. (author), Metrikine, A. (author)
In this paper, a new model is developed to describe the nonlinear dynamics of twoaxially deformable bars sliding relative to each other in which the interaction is governed byfriction. The first bar is fixed at one end and is subjected to a distributed normal force perpen-dicular to its axis to activate friction at the common interface, while...
conference paper 2020
document
Sous, D. (author), Dodet, G. (author), Bouchette, Frédéric (author), Tissier, M.F.S. (author)
This paper reports on a combined experimental and numerical study dedicated to barrier reefs hydrodynamics. A network of pressure sensors and velocity profilers has been deployed for more than 2 months over the Ouano reef barrier, New Caledonia. The primary aim of the study is to assess the relevance of the classical depth-averaged momentum...
journal article 2020
document
Zhang, Gangqiang (author), Zheng, Ganlin (author), Ren, Tianhui (author), Zeng, Xiangqiong (author), van der Heide, E. (author)
In order to reduce the damage to tissue and fill the interstices between fibers, multifilament sutures are frequently treated with certain coating materials. The objective of this study was to create and characterize dopamine hydrochloride (DA) and carboxymethyl chitosan (CMCS) coatings on surgical sutures and investigate their effects on the...
journal article 2020
Searched for: subject%3A%22Friction%22
(1 - 20 of 126)

Pages