搜索结果: 1-15 共查到“理学 Friction”相关记录51条 . 查询时间(0.093 秒)
Modeling the dynamic rupture propagation on heterogeneous faults with rate- and state-dependent friction
dynamic rupture fault constitutive law fault friction stress heterogeneities
2015/9/10
We investigate the effects of non-uniform distribution of constitutive parameters on the dynamic propagation of
an earthquake rupture. We use a 2D finite difference numerical method and we assume tha...
Penn and UC Merced Researchers Match Physical and Virtual Atomic Friction Experiments
Penn and UC Merced Researchers Match Physical Virtual Atomic Friction Experiments
2015/5/25
Technological limitations have made studying friction on the atomic scale difficult, but researchers at the University of Pennsylvania and the University of California, Merced, have now made advances ...
Science friction: Unlocking this basic force may lead to futuristic technologies（图）
Science friction Unlocking futuristic technologies
2015/3/18
Here’s the rub with friction — scientists don’t really know how it works. Sure, humans have been harnessing the power of friction since rubbing two sticks together to build the first fire, but th...
Low friction along the high slip patch of the 2011 Mw 9.0 Tohoku-Oki earthquake required from the wedge structure and extensional splay faults
Low friction along the high slip patch 2011 Mw 9.0 Tohoku-Oki earthquake required the wedge structure extensional splay faults
2014/4/15
We analyze the mechanical properties needed to account for the large shallow slip during the 2011 Tohoku-Oki earthquake and the activation of landward normal faulting within the forearc. We show that ...
Megathrust friction determined from mechanical analysis of the forearc in the Maule earthquake area
Maule earthquake frictional properties dynamic weakening critical wedge
2014/4/15
The seismogenic potential of a given fault depends essentially on its frictional properties and on the mechanical properties of the medium. Determining the spatio-temporal variations of frictional pro...
Enhancement of Blackbody Friction due to the Finite Lifetime of Atomic Levels
Blackbody Friction Finite Lifetime of Atomic Levels Atomic Physics
2012/5/17
The thermal friction force acting on an atom moving relative to a thermal photon bath is known to be proportional to an integral over the imaginary part of the frequency-dependent atomic (dipole) pola...
The global strong solution for Navier-Stokes equations in 3D thin domains with Navier-friction boundary conditions
3D Navier-Stokes equations thin domains Navier-friction boundary conditions attractors
2011/10/19
In this paper, we consider Navier-Stokes equations in thin 3D thin domain with more general Navier-friction boundary conditions (2.4) (compare with boundary condition in [1]). We prove the global exis...
Dynamical membrane curvature instability controlled by intermonolayer friction
Dynamical membrane curvature intermonolayer friction phospholipid membrane
2011/8/16
Abstract: We study a dynamical curvature instability caused by a local chemical modification of a phospholipid membrane. In our experiments, a basic solution is microinjected close to a giant unilamel...
Effects of Ag-Carried Content in P/Ag Nanocomposites on Tribological Properties of 45 Mild Steel Friction Pairs
Ag-Carried Palygorskite Auto-Restoration Friction and Wear Nano Composite
2011/11/14
In this paper, some Ag-carried palygorskite nanocomposites P/Ag were prepared, their silver content were 1.3%, 4.61%, 9.54% separately. To investigate the effects of the silver content on tribological...
Crossover from negative to positive shear rate dependence in granular friction
Crossove granular friction
2011/9/9
We conduct an experiment on the frictional properties of granular matter over a wide range of shear rate that covers both the quasistatic and the inertial regimes. We show that the friction coefficien...
On a finite element approximation of the Stokes problem under leak or slip boundary conditions of friction type
Finite element method Stokes equations Boundary conditions of friction type
2011/2/25
A nite element approximation of the Stokes equations under a certain nonlinear boundary condition, namely, the slip or leak boundary con-dition of friction type, is considered. We propose an approxim...
Nonlinear Dynamical Friction of a Circular-Orbit Perturber in a Gaseous Medium
Galaxy Astrophysics (astro-ph.GA)
2010/12/28
We use three-dimensional hydrodynamic simulations to investigate the nonlinear gravitational responses of gas to, and the resulting drag forces on, very massive perturbers moving on circular orbits.
We present a source model for the 2001Mw7.6 Bhuj earthquake of northwest India. The slip distribution suggests a high stress drop (～35 MPa) and, together with the depth distribution of aftershocks, th...
Mathematical results on some models describing the motion of a tracer particle through a Bose-Einstein condensate are described. In the limit of a very dense, very weakly interacting Bose gas and for...
The effect of Coulombic friction on spatial displacement statistics
Coulombic friction spatial displacement statistics
2010/11/12
The phenomenon of Coulombic friction enters the stochastic description of dry friction between two solids and the statistic characterization of vibrating granular media. Here we analyze the correspon...