Results 11 to 20 of about 133,004 (298)

Viscoelastic Relaxation Modulus Characterization Using Prony Series [PDF]

open access: yesLatin American Journal of Solids and Structures, 2015
The mechanical behavior of viscoelastic materials is influenced, among other factors, by parameters like time and temperature. The present paper proposes a methodology for a thermorheologically and piezorheologically simple characterization of ...
Juliana E. Lopes Pacheco   +2 more
doaj   +3 more sources

New normalized constant modulus algorithms with relaxation [PDF]

open access: yesIEEE Signal Processing Letters, 1997
A new normalized constant modulus algorithm is proposed that has a more desirable error performance surface (EPS) than the existing constant modulus blind equalization algorithms. We show that for an autoregressive channel, a well-known class of undesirable local solutions (ULSs) does not exist.
Tanrikulu, O   +2 more
openaire   +6 more sources

Comparison of Relaxation Modulus Converted from Frequency- and Time-Dependent Viscoelastic Functions through Numerical Methods

open access: yesApplied Sciences, 2018
Due to the difficulty of obtaining relaxation modulus directly from experiments, many interconversion methods from other viscoelastic functions to relaxation modulus were developed in previous years.
Weiguang Zhang   +3 more
doaj   +3 more sources

A 3-dimensional singular kernel problem in viscoelasticity: An existence result

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2019
Materials with memory, namely those materials whose mechanical and/or thermodynamical behavior depends on time not only via the present time, but also through its past history, are considered.
Sandra Carillo
doaj   +2 more sources

Simulation of relaxation time and storage modulus for carbon nanotubes-based nanocomposites

open access: yesJournal of Materials Research and Technology, 2021
This paper develops two equations for relaxation time and storage modulus of biopolymer nanocomposites at unlike frequency ranges. The relaxation time is correlated to zero complex viscosity, yield stress, K constant and power-law index. In addition, the
Yasser Zare, Kyong Yop Rhee
doaj   +1 more source

Transverse relaxation characteristic and stress relaxation model considering molecular chains of HTPB coating based on pre-strained thermal aging

open access: yesDefence Technology, 2021
In order to accurately describe the transverse relaxation characteristic and stress relaxation modulus of HTPB coating during pre-strain thermal aging process, a one month thermal aging test was carried out at 70 °C with pre-strain of 0%, 3%, 6% and 9 ...
Yong-qiang Du   +3 more
doaj   +1 more source

Experimental and numerical research of stress relaxation behavior of magnetorheological elastomer

open access: yesPolymer Testing, 2021
The paper presents experimental research and viscoelastic modeling of stress relaxation response of isotropic magnetorheological elastomer (MRE). The isotropic MRE has been prepared based on silicone matrix filled by magnetically micro-sized carbonyl ...
Tran Huu Nam   +2 more
doaj   +1 more source

Analysis method for relaxation effect of prestressed anchor cable tension based on a series rheological model

open access: yesShuiwen dizhi gongcheng dizhi, 2023
Anchor cable tension relaxation with time is a typical problem in the prestressed anchor cable structure used to reinforce slopes. In order to reasonably predict the tension relaxation of anchor cable, based on the interaction among the stable layer ...
Yi DENG, Shiguo XIAO
doaj   +1 more source

Simple average expression for shear-stress relaxation modulus [PDF]

open access: yesPhysical Review E, 2016
Focusing on isotropic elastic networks we propose a novel simple-average expression $G(t) = _A - h(t)$ for the computational determination of the shear-stress relaxation modulus $G(t)$ of a classical elastic solid or fluid and its equilibrium modulus $\G_{eq} = \lim_{t \to \infty} G(t)$.
Wittmer, J. P., Xu, H., Baschnagel, J.
openaire   +4 more sources

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