Results 21 to 30 of about 1,067,690 (293)

Dynamical friction for accelerated motion in a gaseous medium [PDF]

, 2009
Dynamical friction arises from the interaction of a perturber and the gravitational wake it excites in the ambient medium. This interaction is usually derived assuming that the perturber has a constant velocity.
Binney, Bullock, Chandrasekhar, Edgar, El-Zant, Faltenbacher, Fathi Namouni, Frenk, Goldreich, Hartigan, Hirth, Hornung, Ida, Jackson, Kim, Kim, Kim, Kim, Kokubo, Namouni, Namouni, Namouni, Narayan, Ostriker, Portegies Zwart, Stewart, Sánchez-Salcedo, Sánchez-Salcedo   +27 more
core   +2 more sources

A thermodynamic analytical model based on entropy production for predicting the grain size and yield strength of the joint formed by continuous drive friction welding

Journal of Materials Research and Technology, 2020
A self-consistent analytical model for predicting qualities of a joint welded by continuous drive friction welding (CDFW) was developed based on the Onsager-Ziegler maximum entropy production principle (OZ-MEPP), dislocation kinetics, and the CDFW ...
J.T. Xiong, Y.J. Du, J.L. Li, J.M. Shi, G.L. Wang, W.L. Wang   +5 more
doaj   +1 more source

Quantum field theory of the van der Waals friction [PDF]

, 2006
The van der Waals friction between two semi-infinite solids, and between a small neutral particle and semi-infinite solid is reconsidered on the basis of thermal quantum field theory in the Matsubara formulation. The calculation of the friction to linear
A. A. Abrikosov, A. I. Volokitin, A. I. Volokitin, A. Nourtier, B. E. Sernelius, B. N. J. Persson, E. M. Lifshitz, E. M. Lifshitz, G. Mahan, L. D. Landau, M. L. Levin, N. Arkani-Hamed, P. Debye, S. M. Rytov, S. M. Rytov, V. G. Polevoi, V. G. Polevoi   +16 more
core   +2 more sources

Is internal friction friction?

Geophysical Research Letters, 1996
Mogi [1974] proposed a simple model of the incipient rupture surface to explain the Coulomb failure criterion. We show here that this model can plausibly be extended to explain the Mohr failure criterion. In Mogi's model the incipient rupture surface immediately before fracture consists of areas across which material integrity is maintained (intact ...
J. C. Savage, J. D. Byerlee, D. A. Lockner   +2 more
openaire   +1 more source

Microstructure and Mechanical Properties of Aluminum Alloy/Stainless Steel Dissimilar Ring Joint Welded by Inertia Friction Welding

Frontiers in Materials, 2022
In recent years, studying the weldability of a dissimilar metal hybrid structure, with the potential to make full use of their unique benefits, has been a research hotspot.
Feng Qin, Feng Qin, Chunbo Zhang, Chunbo Zhang, Jun Zhou, Jun Zhou, Kai Xu, Qi Wang, Qi Wang, Yunlei Li, Yunlei Li, Wenhan Zhang, Wenhan Zhang   +12 more
doaj   +1 more source

Friction and Friction Heat of Micronscale Iron [PDF]

Journal of Tribology, 2020
Abstract This paper investigates the friction and friction heat of the micronscale iron under the influences such as the velocity of the slider and temperature of the substrate by using the smoothed particle hydrodynamics simulations.
Van Sang, Le, Yano, Akihiko, Fujii, Shuji, Sugimura, Natsuko, Washizu, Hitoshi   +4 more
openaire   +2 more sources

Rotational Quantum Friction [PDF]

Physical Review Letters, 2012
Published on PRL as Editors ...
Zhao, R., Manjavacas, Alejandro, García de Abajo, Francisco Javier, Pendry, J. B.   +3 more
openaire   +4 more sources

Microstructure evolution and stress corrosion cracking sensitivity of friction stir welded high strength AA7085 joint

Materials & Design, 2021
Influence of welding process parameters on stress corrosion cracking (SCC) sensitivity through thickness of 12 mm thick AA7085-T7452 joints by single-sided and double-sided friction stir welding (FSW) was investigated via the slow strain rate tensile ...
W.F. Xu, H.J. Lu, X.H. Li, M. Wang, J. Ma, Y.X. Luo   +5 more
doaj   +1 more source

Adsorbate induced enhancement of electrostatic non-contact friction [PDF]

, 2005
We study the non-contact friction between an atomic force microscope tip and a metal substrate in the presence of bias voltage. The friction is due to energy losses in the sample created by the electromagnetic field from the oscillating charges induced ...
A. I. Volokitin, B. N. J. Persson, I. E. Dzyaloshinskii, L. D. Landau, N. Arkani-Hamed   +4 more
core   +2 more sources

Microscale friction reduction by normal force modulation in MEMS. [PDF]

, 2010
Friction in MEMS-scale devices is troublesome because it can result in lateral stiction of two sliding surfaces. We have investigated the effect of modulation of the normal force on the friction between two sliding MEMS surfaces, using a fully MEMS-based
Frenken, Joost W. M., Turq, Viviane, Van Spengen, W. Merlijn, Wijts, Geert   +3 more
core   +2 more sources