Nonlinear Stress Relaxation of Polyisobutylene in Simple Extension and Recovery After Partial Relaxation

1979 ◽  
Vol 23 (4) ◽  
pp. 533-542 ◽  
Author(s):  
Carl R. Taylor ◽  
John D. Ferry
Keyword(s):  
Stress Relaxation ◽  
Simple Extension ◽  
Partial Relaxation ◽  
Nonlinear Stress

Nonlinear Stress Relaxation of Polyisobutylene in Simple Extension

1976 ◽  
Vol 20 (1) ◽  
pp. 141-152 ◽  
Author(s):  
Carl R. Taylor ◽  
Roberto Greco ◽  
Ole Kramer ◽  
John D. Ferry
Keyword(s):  
Stress Relaxation ◽  
Simple Extension ◽  
Nonlinear Stress

Nonlinear Stress Relaxation of H-Shaped Polymer Melt Revisited Using a Stochastic Pom-Pom Model

2003 ◽  
Vol 36 (6) ◽  
pp. 2141-2148 ◽  
Author(s):  
Sheng C. Shie ◽  
Chang T. Wu ◽  
Chi C. Hua
Keyword(s):  
Stress Relaxation ◽  
Polymer Melt ◽  
Nonlinear Stress

scholarly journals Nonlinear stress relaxation of transiently crosslinked biopolymer networks

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Sihan Chen ◽  
Chase P. Broedersz ◽  
Tomer Markovich ◽  
Fred C. MacKintosh
Keyword(s):  
Stress Relaxation ◽  
Nonlinear Stress

scholarly journals Fractional Stress Relaxation Model of Rock Freeze-Thaw Damage

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Q. Liu ◽  
W. Chen ◽  
J. K. Guo ◽  
R. F. Li ◽  
D. Ke ◽  
...  
Keyword(s):  
Stress Relaxation ◽  
Fatigue Loading ◽  
Element Model ◽  
Model Parameters ◽  
Rock Stress ◽  
Relaxation Equation ◽  
Freeze Thaw ◽  
Thaw Cycle ◽  
Nonlinear Stress ◽  
Freeze Thaw Cycle

Freeze-thaw cycle is a type of fatigue loading, and rock stress relaxation under freeze-thaw cycles takes into account the influence of the freeze-thaw cycle damage and deterioration. Rock stress relaxation under freeze-thaw cycles is one of the paramount issues in tunnel and slope stability research. To accurately describe the mechanical behaviour of stress relaxation of rocks under freeze-thaw, the software element is constructed based on the theory of fractional calculus to replace the ideal viscous element in the traditional element model. The freeze-thaw damage degradation of viscosity coefficient is considered. A new three-element model is established to better reflect the nonlinear stress relaxation behavior of rocks under freeze-thaw. The freeze-thaw and stress relaxation of rock are simulated by ABAQUS, the relevant model parameters are determined, and the stress relaxation equation of rock under freeze-thaw cycle is obtained based on numerical simulation results. The research shows that the test results are consistent with the calculated results, indicating that the constitutive equation can better describe the stress relaxation characteristics of rocks under freeze-thaw and provide theoretical basis for surrounding rock support in cold region.

Nonlinear stress relaxation of filled rubber compounds: A new theoretical model and experimental investigation

2020 ◽  
Vol 138 (8) ◽  
pp. 49884
Author(s):  
Mir Hamid Reza Ghoreishy ◽  
Foroud Abbassi‐Sourki
Keyword(s):  
Experimental Investigation ◽  
Theoretical Model ◽  
Stress Relaxation ◽  
Filled Rubber ◽  
Rubber Compounds ◽  
Nonlinear Stress

Nonlinear Stress Relaxation of Miscible Polyisoprene/Poly(p-tert-butylstyrene) Blends in Pseudomonodisperse State

2016 ◽  
Vol 49 (12) ◽  
pp. 4544-4556 ◽  
Author(s):  
Yumi Matsumiya ◽  
Hiroshi Watanabe
Keyword(s):  
Stress Relaxation ◽  
Nonlinear Stress

scholarly journals Nonlinear Stress Relaxation of Scarcely Entangled Chains in Primitive Chain Network Simulations

2013 ◽  
Vol 41 (1) ◽  
pp. 13-19 ◽  
Author(s):  
Kenji Furuichi ◽  
Chisato Nonomura ◽  
Yuichi Masubuchi ◽  
Hiroshi Watanabe
Keyword(s):  
Stress Relaxation ◽  
Nonlinear Stress ◽  
Network Simulations

Nonlinear Stress Relaxation of ABS Polymers in the Molten State

2001 ◽  
Vol 34 (9) ◽  
pp. 3100-3107 ◽  
Author(s):  
Yuji Aoki ◽  
Akira Hatano ◽  
Takeshi Tanaka ◽  
Hiroshi Watanabe
Keyword(s):  
Stress Relaxation ◽  
Molten State ◽  
Nonlinear Stress

Correlation of Large Longitudinal Deformations with Different Strain Histories

1967 ◽  
Vol 40 (2) ◽  
pp. 506-516 ◽  
Author(s):  
L. J. Zapas ◽  
T. Craft
Keyword(s):  
Stress Relaxation ◽  
Single Step ◽  
Strain History ◽  
Simple Extension ◽  
Stress Strain ◽  
Fluid Equation ◽  
Elastic Fluid ◽  
Strain Behavior ◽  
Elastomeric Materials ◽  
Single Integral

Abstract In 1963 Bernstein, Kearsley, and Zapas1 presented a theory of an elastic fluid which gave the correct stress-relaxation response for a large variety of elastomeric materials, including vulcanized rubbers. A principle attractiveness of this theory is its relative simplicity; with a single integral in time, it describes the stress-strain behavior for all types of deformation histories. In the case of simple extension, it predicts the behavior in any uniaxial strain history from the results of single step stress-relaxation experiments which cover the same range of extension and time. We designed a series of experiments to check the validity of this theory and found, as is shown in this paper, excellent agreement with experiment in all cases. We are aware that experiments cannot prove a theory. From our results, however, we feel strongly that a single integral expression with a nonlinear integrand such as the BKZ elastic fluid equation is sufficient to describe the stress-strain behavior of elastomeric materials.

Nonlinear stress relaxation in an epoxy glass and its relationship to deformation induced mobility

Polymer ◽  
2013 ◽  
Vol 54 (15) ◽  
pp. 3949-3960 ◽  
Author(s):  
Jae Woo Kim ◽  
Grigori A. Medvedev ◽  
James M. Caruthers
Keyword(s):  
Stress Relaxation ◽  
Nonlinear Stress
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