نتایج جستجو برای: elastic limit

تعداد نتایج: 258404  

2001
Thorsten Renk

Following prior analysis for measured pp elastic differential cross section, the impact parameter representation in terms of profile functions is calculated from two different parameterizations on single diffractive dissociation data. The derivative of this quantity with respect to the collision energy squared s measures the growth rate of the reaction’s blackness. Its distribution in impact pa...

1996
Boris Fain Joseph Rudnick Stellan Ostlund

We examine the conformations of a model for underand overwound DNA. The molecule is represented as a cylindrically symmetric elastic string subjected to a stretching force and to constraints corresponding to a specification of the link number. We derive a fundamental relation between the Euler angles that describe the curve and the topological linking number. Analytical expressions for the spat...

1999
A. Kapanowski K. Sokalski

Microscopic expressions for the elastic constants of binary liquid crystalline mixtures composed of short rigid uniaxial molecules are derived in the thermodynamic limit at small distorsions and a small density. Uniaxial and biaxial nematic phases are considered. The expressions involve the one-particle distribution functions and the potential energy of two-body short-range interactions. The th...

Journal: :Physical review letters 2003
M Cristina Marchetti A Alan Middleton Karl Saunders J M Schwarz

Extended systems driven through strong disorder are modeled generically using coarse-grained degrees of freedom that interact elastically in the directions parallel to the drive and slip along at least one of the directions transverse to the motion. In the limit of infinite-range elastic and viscous coupling this model has a tricritical point separating a region where the depinning is continuou...

2009
Sergey Troshin Nikolay Tyurin

We discuss effects of reflective scattering for hadron and heavy nuclei collisions at the LHC and asymptotical energies. It is shown that the reflective scattering might lead to decreasing matter density with energy beyond the LHC energies. Limiting form of energy dependence of hadron density is obtained. Unitarity upper bound for the absolute value of the real part of elastic scattering amplit...

2016
Douglas C. Hofmann Raul Polit-Casillas Scott N. Roberts John-Paul Borgonia Robert P. Dillon Evan Hilgemann Joanna Kolodziejska Lauren Montemayor Jong-ook Suh Andrew Hoff Kalind Carpenter Aaron Parness William L. Johnson Andrew Kennett Brian Wilcox

The use of bulk metallic glasses (BMGs) as the flexspline in strain wave gears (SWGs), also known as harmonic drives, is presented. SWGs are unique, ultra-precision gearboxes that function through the elastic flexing of a thin-walled cup, called a flexspline. The current research demonstrates that BMGs can be cast at extremely low cost relative to machining and can be implemented into SWGs as a...

Journal: :Physical review letters 2011
A Merkel V Tournat V Gusev

A generalized theory of elasticity, taking into account the rotational degrees of freedom of point bodies constituting a continuum, was proposed at the beginning of the twentieth century by the Cosserat brothers. We report the experimental observation of coupled rotational-translational modes in a noncohesive granular phononic crystal. While absent in the classical theory of elasticity, these e...

2001
Thorsten Renk

Following a prior analysis of measured pp elastic differential cross sections, the impact parameter representation in terms of profile functions is calculated from two different parametrizations of single diffractive dissociation data. The derivative of this quantity with respect to the collision energy squared s measures the growth rate of the reaction’s blackness. Its distribution in impact p...

2009
Mehmet Caner Hao Helen Zhang HAO HELEN ZHANG

This paper develops adaptive elastic net estimator for general estimating equations. We allow for number of parameters diverge to infinity. The estimator can also handle collinearity among large number of variables as well. This method has the oracle property, meaning we can estimate nonzero parameters with their standard limit and the redundant parameters are dropped from the equations simulta...

1992
M. CRISTINA MARCHETTI

The pair interaction between magnetic flux lines in a semi-infinite slab of an anisotropic type-II superconductor in an external field is derived in the London limit. The case where the applied field is normal to the superconductor/vacuum interface is considered. The presence of stray fields near the surface leads to an additional contribution to the repulsive interaction between flux lines tha...

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