Results 31 to 40 of about 56,073 (234)

A thermodynamically consistent derivation of a frictional-damage cohesive-zone model with different mode i and mode II fracture energies [PDF]

open access: yes, 2015
The present paper deals with the derivation of an interface model characterized by macroscopic fracture energies which are different in modes I and II, the macroscopic fracture energy being the total energy dissipated per unit of fracture area.
Alfano, G, Sacco, E, Serpieri, R
core   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

A New Methodology for Determining the Friction Factor

open access: yesMetals
The friction law, which requires that the friction stress is a constant fraction of the local yield shear stress, is widely used for modeling bulk metal forming processes.
Sergei Alexandrov   +5 more
doaj   +1 more source

A new material model for 2D numerical simulation of serrated chip formation when machining titanium alloy Ti-6Al-4V [PDF]

open access: yes, 2008
A new material constitutive law is implemented in a 2D finite element model to analyse the chip formation and shear localisation when machining titanium alloys. The numerical simulations use a commercial finite element software (FORGE 2005) able to solve
CALAMAZ, Madalina   +2 more
core   +4 more sources

Application of Friction Shear Test for Constitutive Modeling Evaluation of Magnesium Alloy AZ31B at high Temperature [PDF]

open access: yes, 2020
The experimental determination of the flow stress and its mathematical formulation are essential for the numerical simulation of metal forming processes.
Gensch, Felix   +2 more
core   +1 more source

Physical Intelligence in Small‐Scale Robots and Machines

open access: yesAdvanced Materials, EarlyView.
“Physical intelligence” (PI) empowers biological organisms and artificial machines, especially at the small scales, to perceive, adapt, and even reshape their complex, dynamic, and unstructured operation environments. This review summarizes recent milestones and future directions of PI in small‐scale robots and machines.
Huyue Chen, Metin Sitti
wiley   +1 more source

Thermobaric Activation of Fault Friction

open access: yesGeophysical Research Letters
The constitutive behavior of faults intervenes in virtually every aspect of the seismic phenomenon but is poorly understood, particularly regarding how effective normal stress affects the boundaries of the seismogenic zone.
S. Barbot   +4 more
doaj   +1 more source

Development of a Constitutive Friction Law based on the Frictional Interaction of Rough Surfaces [PDF]

open access: yesTribology in Industry, 2015
Friction has a considerable impact in metal forming. This is in particular true for sheet-bulk metal-forming (SBMF) in which local highly varying contact loads occur.
F. Beyer, F. Hauer, K. Willner
doaj  

Gutenberg-Richter’s law in sliding friction of gels [PDF]

open access: yes, 2011
We report on experimental studies of spatio-temporally heterogeneous stick-slip motions in the sliding friction between a hard polymethyl methacrylate (PMMA, plexiglass) block and a soft poly-dimethyl siloxane (PDMS, silicone) gel plate.
Ampuero, Jean-Paul   +5 more
core   +1 more source

Review of Thin Lithium Metal Battery Anode Fabrication – Microstructure – Electrochemistry Relations

open access: yesAdvanced Materials, EarlyView.
Thin, lightweight lithium‐metal anodes are pivotal for practical high‐energy batteries. This review surveys processing routes that convert diverse Li precursors, e.g., ingots, melts, solutions, and vapor, into Li‐rich foils with controlled thickness, areal density, and tailored functionality.
Yuhang Hu   +6 more
wiley   +1 more source

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