Results 121 to 130 of about 423,780 (329)

A robust control scheme for flexible arms with friction in the joints [PDF]

A general control scheme to control flexible arms with friction in the joints is proposed in this paper. This scheme presents the advantage of being robust in the sense that it minimizes the effects of the Coulomb friction existing in the motor and the ...
Brown, H. Benjamin, Jr., Feliu, Vicente, Rattan, Kuldip S.   +2 more
core   +1 more source

Dynamic stiffness and vibration analysis model of angular contact ball bearing considering vibration and friction state variation [PDF]

, 2022
Xianghe Yun, Qingkai Han, Baogang Wen, Hao Xu   +3 more
openalex   +1 more source

Droplet Triboelectrification on Liquid‐Like Polymer Brushes

Advanced Functional Materials, EarlyView.
This work investigates the triboelectrification of water droplets on polymer brush‐coated surfaces exhibiting minimal contact line pinning. Such surfaces enable the systematic study of electrode patterning and controlled changes in droplet contact area.
Mohammad Soltani, Adel Malekkhouyan, Araz Rajabi‐Abhari, Behrooz Khatir, Ning Yan, Kevin Golovin   +5 more
wiley   +1 more source

Experimental Study on the Effects of Initial Shear Stress and Vibration Frequency on Dynamic Strength of Saturated Sands

Advances in Materials Science and Engineering, 2019
The cyclic triaxial system is used to investigate the effects of confining pressure, initial shear stress, cyclic stress ratio, and vibration frequency on the dynamic strength characteristics of saturated sand in the Wenchuan area. Results show that when
Jian Zhang, Jiuting Cao, Sijie Huang
doaj   +1 more source

Non-monotonicity of the frictional bimaterial effect

, 2017
Sliding along frictional interfaces separating dissimilar elastic materials is qualitatively different from sliding along interfaces separating identical materials due to the existence of an elastodynamic coupling between interfacial slip and normal ...
Achenbach, Achenbach, Adams, Aldam, Allam, Ampuero, Andrews, Bar-Sinai, Baumberger, Ben-Zion, Ben-Zion, Ben-Zion, Ben-Zion, Ben-Zion, Ben-Zion, Ben-Zion, Ben-Zion, Ben-Zion, Bhat, Bohnhoff, Brener, Brietzke, Calderoni, Cochard, Crupi, Dade, DeDontney, Dor, Dor, Dowson, Dunham, Eberhart-Phillips, Erickson, Gabuchian, Geubelle, Harris, Huang, Landau, Langer, Lay, Legros, Lengliné, Lenglinė, Lewis, Lewis, Lipovsky, Lotto, Lyakhovsky, Lykotrafitis, Marone, Mitchell, Oglesby, Ozakin, Persson, Prakash, Prakash, Prakash, Ranjith, Rice, Rice, Rice, Rockwell, Ross, Rubin, Rubin, Rubin, Ruina, Sandvol, Satake, Scala, Scholz, Scholz, Share, Shi, Shlomai, Thomas, Turcotte, Uenishi, Wang, Weertman, Weertman, Wiens, Winberry, Xia, Xu, Xu, Xu, Yamashita, Yang, Zaliapin, Şengör   +90 more
core   +1 more source

Turnaround radius in $Λ$CDM, and dark matter cosmologies II: the role of dynamical friction [PDF]

, 2021
Antonino Del Popolo, Man Ho Chan
openalex   +1 more source

OCTOID: A Soft Robotic System Featuring Programmable Shape Morphing and Dynamic Structural Coloration

Advanced Functional Materials, EarlyView.
Inspired by octopuses, actuating legs based on soft materials are fabricated with programmed chiroptical properties and mechanical behaviors to achieve dynamic color modulation and reversible shape morphing, and these legs are developed into a modular OCTOID system.
Seung Hui Han, Seok‐In Lim, Ki‐Hyun Ryu, Sang Seok Lee, Dong‐Gue Kang, Jahyeon Koo, Kwang‐Un Jeong, Shin‐Hyun Kim, Dae‐Yoon Kim   +8 more
wiley   +1 more source

Research on the Time-Varying Properties of Brake Friction (September 2018)

IEEE Access, 2018
In this paper, a dynamic model of the coefficient of friction (COF) is established from energy perspective and the principal friction mechanism of disc brake is investigated.
Zhishuai Wan, Xiandong Liu, Haixia Wang, Yingchun Shan   +3 more
doaj   +1 more source

Towards a statistical theory of solid dry friction

, 1997
Wearless dry friction of an elastic block of weight N, driven by an external force F over a rigid substrate, is investigated. The slider and substrate surfaces are both microscopically rough, interacting via a repulsive potential that depends on the ...
Nattermann, T., Volmer, A.
core   +1 more source

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

Advanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang, Yu Chen, Ezra Sarmiento, Taige Hao, Atsushi Arakaki, Michiko Nemoto, Pablo Zavattieri, David Kisailus   +7 more
wiley   +1 more source