Nonlinear viscoelastic analysis of statistically homogeneous random composites

2004 ◽  
Vol 2 (4) ◽  
pp. 645-673 ◽  
Author(s):  
M. Sejnoha ◽  
R. Valenta ◽  
J. Zeman
Keyword(s):  
Viscoelastic Analysis ◽  
Nonlinear Viscoelastic ◽  
Random Composites

Nonlinear viscoelastic analysis of unaged and aged asphalt binders

2008 ◽  
Vol 22 (11) ◽  
pp. 2170-2179 ◽  
Author(s):  
Eyad Masad ◽  
Chien-Wei Huang ◽  
Gordon Airey ◽  
Anastasia Muliana
Keyword(s):  
Asphalt Binders ◽  
Viscoelastic Analysis ◽  
Nonlinear Viscoelastic ◽  
Aged Asphalt

Microindentation on Gelatin Films with a Spherical Indenter -- A Viscoelastic Analysis

1993 ◽  
Vol 308 ◽  
Author(s):  
Beta Y. Ni ◽  
Gary R. Bisson ◽  
Andy H. Tsou
Keyword(s):  
Viscoelastic Model ◽  
Tensile Modulus ◽  
Polymeric Materials ◽  
Element Model ◽  
Gelatin Film ◽  
Spherical Indenter ◽  
Constitutive Law ◽  
Viscoelastic Analysis ◽  
Nonlinear Viscoelastic ◽  
Gelatin Films

ABSTRACTA finite element model was employed to analyze the microindentation test with a spherical indenter on gelatin films. The deficiency of using elastic-plastic constitutive law to describe indentation response of gelatin film was recognized and a viscoelastic model was proposed for the first time to analyze indentation experiments on polymeric materials. Based on viscoelastic analysis, it was found that gelatin is nonlinear viscoelastic. In addition, modulus in the thickness direction of a gelatin film was determined to be 2.5–2.9 GPa as compared with its tensile modulus of 4.6 GPa in the transverse direction.

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