Results 321 to 330 of about 12,038,824 (373)

Approximate Relaxation Function for Concrete

Journal of the Structural Division, 1979
Presented is an approximate algebraic formula for calculating the relaxation function for aging concrete. The formula is general; it applies to any form of the creep function. Compared to the previously used effective modulus method, the formula reduces the error from up to 37% to within 2% relative to the exact solution according to the superpositon ...
Zdeněk P. Bažant, Sang-Sik Kim
openaire   +1 more source

A relaxation function with distribution of relaxation times

Physics Letters A, 1970
Abstract A dispersion function based on mixed second order kinetics is interpreted as a linear dispersion system with infinite many relaxators explicitly given.
openaire   +1 more source

Relaxation functions in dipolar materials

Journal of Statistical Physics, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Weron, A., Weron, K., Woyczynski, W. A.
openaire   +1 more source

OnM-functions and nonlinear relaxation methods

BIT Numerical Mathematics, 1985
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Spin-Relaxation Functions

1997
The spin-relaxation functions are the time dependences of the observables one measures in relaxation experiments. A list of relaxation functions for typical measuring procedures is given in Table 10.1 on page 93.
openaire   +1 more source

Rounded stretched exponential for time relaxation functions

The Journal of Chemical Physics, 2009
A rounded stretched exponential function is introduced, C(t)=exp{(τ0/τE)β[1−(1+(t/τ0)2)β/2]}, where t is time, and τ0 and τE are two relaxation times. This expression can be used to represent the relaxation function of many real dynamical processes, as at long times, t⪢τ0, the function converges to a stretched exponential with normalizing relaxation ...
J G, Powles, D M, Heyes, G, Rickayzen, W A B, Evans   +3 more
openaire   +2 more sources

Dielectric relaxation functions and models

Journal of Applied Physics, 1990
The dielectric relaxation function is defined as the transient current generated by the application of a unit voltage. In analogy with viscoelasticity, a second relaxation function can be defined as the transient voltage generated by the application of a unit current.
openaire   +1 more source

Multiscale relaxation of convex functionals

2003
Summary: The \(\Gamma\)-limit of a family of functionals \[ u\mapsto \int_\Omega f\Biggl({x\over\varepsilon}, {x\over \varepsilon^2}, D^su\Biggr)\,dx \] is obtained for \(s= 1,2\) and when the integrand \(f= f(x,y,v)\) is a continuous function, periodic in \(x\) and \(y\), and convex with respect to \(v\). The 3-scale limits of second-order derivatives
FONSECA I., ZAPPALE, ELVIRA
openaire   +3 more sources

RELAXATION OF FUNCTIONALS INVOLVING HOMOGENEOUS FUNCTIONS AND INVARIANCE OF ENVELOPES

Chinese Annals of Mathematics, 2002
It is well known that minimization problems involving functionals of the type : \(I\left( u\right) =\int_{\Omega }W\left( \nabla u\right) dx\) do not have solutions in the general case, that is without assumptions on \(W\) which imply the weak lower semicontinuity of \(I\) on appropriate Sobolev spaces.
Bousselsal, M., Le Dret, H.
openaire   +2 more sources

Relaxation methods of minimization of pseudoconvex functions

Journal of Soviet Mathematics, 1989
See the preview in Zbl 0501.65025.
openaire   +1 more source