Results 61 to 70 of about 283,093 (346)

3D‐Printed Serial Snap‐Through Architectures for Programmable Mechanical Response

Advanced Engineering Materials, EarlyView.
A serial snap‐through architecture is realized using compact 3D‐printed von Mises truss units arranged in a staged cascade. Their geometry and boundary conditions program multistage mechanical responses with plateaux and re‐hardening regimes. An inverted‐compliance model predicts these behaviors and enables analytical design of programmable force ...
Filipe A. Santos
wiley   +1 more source

Design and Parameter Optimization of the Reduction-Isolation Control System for Building Structures Based on Negative Stiffness

Buildings, 2023
In order to improve the damping capacity of building isolation system, this paper studies the damping isolation control system of the building structure based on negative stiffness.
Xiaofang Kang, Shuai Li, Jun Hu
doaj   +1 more source

The effect of a reversible shear transformation on plastic deformation of an amorphous solid [PDF]

, 2015
Molecular dynamics simulations are performed to investigate the plastic response of a model glass to a local shear transformation in a quiescent system.
Priezjev, Nikolai V.
core   +3 more sources

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

Cyclic shearing characteristics of calcareous sand-snake skin-inspired interfaces

Yantu gongcheng xuebao
In marine geotechnical engineering, the dynamic response of the calcareous sand-structure interfaces is critical to the overall stability of structures.
CUI Hao 1, 2 , LIU Hanlong 2, 3, XIAO Yang 2, 3
doaj   +1 more source

The self-excitation damping ratio: A chatter criterion for time-domain milling simulations [PDF]

, 2004
Regenerative chatter is known to be a key factor that limits the productivity of high speed machining. Consequently, a great deal of research has focused on developing predictive models of milling dynamics, to aid engineers involved in both research and ...
Altintas, Atkinson, Campomanes, Delio, Forsythe, Frigo, Kondo, Li, Neil D. Sims, Rao, Schmitz, Smith, Smith, Tlusty, Tlusty, Tobias   +15 more
core   +1 more source

Copper Doping Enhances the Activity and Selectivity of Atomically Precise Ag44 Nanoclusters for Photocatalytic CO2 Reduction

Advanced Functional Materials, EarlyView.
By a simple anti‐Galvanic reaction, up to six copper atoms could be preferably doped into the Ag2(SR)5 staple motifs and Ag20 dodecahedral shell of an atomically precise Ag44(SR)30 nanocluster. When anatase TiO2 is used as substrate, the (AgCu)44/TiO2 photocatalyst exhibited much improved activity in photocatalytic CO2 reduction compared to Ag44/TiO2 ...
Ye Liu, Xi Zheng, Xiufan Liu, Tengyuan Gao, Nicola Pinna, Yu Wang   +5 more
wiley   +1 more source

Damped finite-time-singularity driven by noise

, 2003
We consider the combined influence of linear damping and noise on a dynamical finite-time-singularity model for a single degree of freedom. We find that the noise effectively resolves the finite-time-singularity and replaces it by a first-passage-time or
A. Johansen, A.J. Bray, D. Sornette, D. Sornette, G. Falkovich, H.C. Fogedby, H.C. Fogedby, H.C. Fogedby, H.C. Fogedby, H.K. Janssen, Hans C. Fogedby, I. Cohen, J. Eggers, J. Eggers, J. Farago, K. Ide, M.C. Cross, M.P. Brenner, M.P. Brenner, M.P. Brenner, P. Constantin, P.C. Martin, R.M. Kerr, S. Gluzman   +23 more
core   +1 more source

Decomposition of process damping ratios and verification of process damping model for chatter vibration [PDF]

Measurement, 2012
In the previous study, by the same authors, titled ‘‘A new process damping model (PDM) for chatter vibration (Measurement, 44 (8) (2011) 1342–1348)’’, a new approach has been presented for obtaining process damping ratios (PDRs). This PDM has been constituted on the basis of the shear angle ðuÞ oscillations of the cutting tool and the alteration of the
Turkes, Erol, Orak, Sezan, Neseli, Suleyman, Yaldiz, Suleyman   +3 more
openaire   +4 more sources

Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics

Advanced Functional Materials, EarlyView.
Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro, Telmo Lopes, André F. Silva, Carmel Majidi, Mahmoud Tavakoli   +4 more
wiley   +1 more source