Results 221 to 230 of about 48,055 (261)

On ageing viscoelastic materials

Journal of the Mechanics and Physics of Solids, 1966
Abstract C onstitutive equations for ageing viscoelastic materials are formulated as differential equations with variable coefficients. Particular attention is devoted to the second order equation; the creep function is derived and asymptotic behaviour is studied. Comparison is made with commonly accepted expressions for creep functions of concrete.
J. Lubliner, J.L. Sackman
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Identification of Viscoelastic Materials

IFAC Proceedings Volumes, 2000
Abstract The frequency-dependent complex modulus for a linearly viscoelastic material is estimated from wave propagation experiments. In these experiments, strains at different sections of a bar specimen are measured as functions of time. The time series are then transformed into the frequency domain, where the identification is made.
M. Mossberg, L. Hillström, T. Söderström   +2 more
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Viscoelastic fiber reinforced materials.

AIAA Journal, 1966
Macroscopic viscoelastic properties of fiber reinforced materials analyzed on basis of composite cylinder assemblage model and correspondence ...
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On the moduli of viscoelastic materials

4th Electronics Packaging Technology Conference, 2002., 2003
The moduli of viscoelastic materials are dependent on temperature and time. Polymeric materials are widely used in electronic packaging as encapsulation, underfill and die attach. The viscoelastic model offers better representation of material performance than the linear elastic model.
X.R. Zhang, J.H.L. Pang, X.Q. Shi, Z.P. Wang   +3 more
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Thermorheological Modelling of Viscoelastic Materials

1995
A semi-empirical framework for the thermorheological description of the flow of viscoelastic materials is presented. The framework summarizes existing constitutive models and offers the possibilty to investigate and extend these models in a systematic way.
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Calendering of a Viscoelastic Material

Journal of Applied Mechanics, 1957
Abstract The solution of the calendering problem for viscous materials is extended to include the first effects of elasticity. A numerical procedure for the solution of the approximate equations is contained in the Appendix.
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Linear Viscoelastic Materials

2019
Viscoelastic materials induce delayed mechanical response when loaded, and are of major interest for designing damping systems or for studying the creep behavior in concrete, among many other engineering applications. Progress in the design of viscoelastic composites require the construction of homogenized models based on microstructural analysis.
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The Viscoelasticity of Filled Materials

Transactions of the Society of Rheology, 1965
An expression for the modulus of rigidity of an elastic material in which a rigid filler is dispersed is extended to deal with a viscoelastic matrix. It is shown that the introduction of the filler adds a second relaxation (or retardation) time to that of the matrix.
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Viscoelasticity of Composite Materials

1980
The Editors regret that the text of this lecture was not received in time for inclusion in the Proceedings.
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Buckling Analysis of a Composite Honeycomb Reinforced Sandwich Embedded with Viscoelastic Damping Material

Applied Sciences (Switzerland), 2022
X Q Zhou
exaly