- document
-
Figueroa, Carlos Gabriel (author), Schouwenaars, Rafael (author), Petrov, R.H. (author), Kestens, L.A.I. (author)This work analyses the effect of annealing conditions on tribolayer formation in copper under dry sliding conditions. Cold rolled material and samples annealed during 15, 30 and 45 min at 600 °C show an increase in grain size, decrease in hardness and increase in toughness and ductility with time. Electron backscattered diffraction maps...journal article 2022
- document
-
Yang, Z. (author), Zhang, P. (author), Moraal, J. (author), Li, Z. (author)By modifying friction to the desired level, the application of friction modifiers (FMs) has been considered as a promising emerging tool in the railway engineering for increasing braking/traction force in poor adhesion conditions and mitigating wheel/rail interface deterioration, energy consumption, vibration and noise. Understanding the...journal article 2022
- document
-
Bian, Jianjun (author), Nicola, L. (author)It has been demonstrated through experiments and simulations that friction decreases significantly when graphene is used as a solid lubricant on various materials. However, the effect of increasing the number of graphene layers on lubrication is controversial. Some studies predict an increase of friction with the number of layers that can be...journal article 2022
- document
-
Tognan, A. (author), Laurenti, L. (author), Salvati, E. (author)Background: Over the past 20 years, the Contour Method (CM) has been extensively implemented to evaluate residual stress at the macro scale, especially in products where material processing is involved. Despite this, insufficient attention has been devoted to addressing the problems of input data filtering and residual stress uncertainties...journal article 2022
- document
-
Li, H. (author), Pourquie, M.J.B.M. (author), Ooms, G. (author), Henkes, R.A.W.M. (author)Interfacial waves in core-annular pipe flow are studied through two-phase numerical simulations. Here the water annulus is turbulent, whereas the oil core stays laminar. The low-Reynolds number Launder & Sharma k−ε model is applied. By extracting the moving wave shape from the two-phase results and imposing this as a solid boundary in a...journal article 2022
- document
-
Kon, Johan (author), Bruijnen, Dennis (author), van de Wijdeven, Jeroen (author), Heertjes, Marcel (author), Oomen, T.A.E. (author)Unknown nonlinear dynamics often limit the tracking performance of feedforward control. The aim of this paper is to develop a feedforward control framework that can compensate these unknown nonlinear dynamics using universal function approximators. The feedforward controller is parametrized as a parallel combination of a physics-based model and...conference paper 2022
- document
-
Lovato, S. (author), Kirichek, Alex (author), Toxopeus, S.L. (author), Settels, J.W. (author), Keetels, G.H. (author)When investigating the effect of muddy seabeds on marine vessels using Computational Fluid Dynamics (CFD) software, one challenge is to adequately describe the complex non-Newtonian fluid behaviour of mud. Although a number of rheological models have been proposed in the past, mud sediments are often simply regarded either as highly viscous...journal article 2022
- document
-
Tsetas, A. (author), Tsouvalas, A. (author), Metrikine, A. (author)The Alternating Frequency-Time (AFT) Harmonic Balance method has been widely applied in the analysis of non-linear mechanical systems under periodic excitation. Customarily, a periodic displacement is considered as ansatz in a harmonic balance analysis. In the present work, a deviation from the latter ansatz is realized and the periodicity is...conference paper 2022
- document
-
Chen, Shibiao (author), Cheng, Gang (author), Pang, Y. (author)To overcome the bearing capacity deficiencies of traditional serial hip joint simulators, complex trajectory simulation, among others, as well as a parallel manipulator with two pairs of artificial hip joints and two moving platforms are proposed. The movements and driving forces of the parallel manipulator under the required motion and loading...journal article 2022
- document
-
Liu, S. (author), Sinke, J. (author), Dransfeld, C.A. (author)Hot-pressing can be an attractive fabrication method that enables the forming of hybrid materials like thermoset based fibre metal laminates. However, the process simulation on press forming requires accurate material characterization and boundary conditions to facilitate part design for a defect-free component. In order to improve the overall...conference paper 2022
- document
-
Savoldi, F. (author)This article focuses on the conflictual relationships between citizens and ports. It critically engages with logistics, challenging positivist views of the port growth as ‘business as usual’. I argue that logistical trends such as naval gigantism and the concentration of power in the shipping industry are increasingly influencing ports’...journal article 2022
- 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
-
Damian, Mircea (author), Shyrokau, B. (author), Carrera Akutain, Xabier (author), Happee, R. (author)A realistic steering feel is one of the key elements to guarantee fidelity on a driving simulator in general, and in particular to replicate on-centre vehicle handling. This requires precise modelling of the steering dynamics, a high bandwidth control loading system, and coupling of virtual and physical components in agreement with...journal article 2022
- document
-
Afzal, Hafiz Malik Naqash (author), Stubbs, Emma (author), Khamis, Heba (author), Loutit, Alastair J. (author), Redmond, Stephen (author), Vickery, Richard Martin (author), Wiertlewski, M. (author), Birznieks, Ingvars (author)Human tactile perception and motor control rely on the frictional estimates that stem from the deformation of the skin and slip events. However, it is not clear how exactly these mechanical events relate to the perception of friction. This study aims to quantify how minor lateral displacement and speed enables subjects to feel frictional...journal article 2022
- document
-
Zhang, F. (author), Yang, Y. (author), Fennis, Sonja A.A.M. (author), Hendriks, M.A.N. (author)Acoustic emission (AE) signal parameters can be used to classify the source type in concrete structures. However, signal parameters are influenced by the wave propagation from the source to the receiver, leading to wrong source classification results, especially for monitoring large concrete structures. This paper experimentally evaluates the...journal article 2022
- document
-
Candela, Thibault (author), Pluymaekers, Maarten (author), Ampuero, Jean Paul (author), Van Wees, Jan Diederik (author), Buijze, Loes (author), Wassing, Brecht (author), Osinga, Sander (author), Grobbe, Niels (author), Muntendam-Bos, A.G. (author)The induced seismicity in the Groningen gas field, The Netherlands, presents contrasted spatio-temporal patterns between the central area and the south west area. Understanding the origin of this contrast requires a thorough assessment of two factors: (1) the stress development on the Groningen faults and (2) the frictional response of the...journal article 2022
- document
-
Mehdizade, M. (author), Eivani, A.R. (author), Tabatabaei, F. (author), Jafarian, H. R. (author), Zhou, J. (author)In the present research, a composite with a magnesium alloy (WE43) as the matrix and Akermanite as the bioactive and reinforcing agent was fabricated by friction stir processing (FSP), resulting in a microstructure with uniformly distributed fine grains, second-phase particles and micro-sized Akermanite particles. The effect of an addition of...journal article 2022
- document
-
Cabboi, A. (author), Marino, Luca (author), Cicirello, A. (author)This study aims at assessing the predictive performance of the Amontons–Coulomb law to reliably predict the cyclic response, inclusive of stick–slip, of a single degree of freedom system in contact with the ground through two versions (steady-state and rate-and-state) of a regularized Dieterich–Ruina law. The assessment is carried out by...journal article 2022
- document
-
Aramfard, Mohammad (author), Pérez-Ràfols, Francisco (author), Nicola, L. (author)A seamless 2D dual-scale computational scheme is developed to study contact problems. The model consists of an atomistic domain close to the contact, coupled with an elastic continuum domain away from the contact. The atomistic formulation provides a description of the contact interaction through interatomic potentials and permits to capture...journal article 2022
- document
-
Wang, L. (author), Vuik, Cornelis (author), Hajibeygi, H. (author)Simulation of fracture contact mechanics in deformable fractured media is of paramount important in computational mechanics. Previous studies have revealed that compressive loading may produce mode II fractures, which is quite different from mode I fractures induced by tensile loading. Furthermore, fractures can cross each other. This will...journal article 2022