Certain effects of melt-shearing and cooling on the stress-strain behavior of thermoplastic elastomers

1971 ◽  
Vol 11 (5) ◽  
pp. 381-384 ◽  
Author(s):  
Jean-Michel Charrier ◽  
Robert J. P. Ranchoux
Keyword(s):  
Thermoplastic Elastomers ◽  
Stress Strain ◽  
Strain Behavior

A Comparison of Tensile Stress-Strain Data from Dumbbell, Ring, and Oval Specimens

1974 ◽  
Vol 47 (5) ◽  
pp. 1213-1233 ◽  
Author(s):  
F. S. Myers ◽  
J. D. Wenrick
Keyword(s):  
Tensile Modulus ◽  
Thermoplastic Elastomers ◽  
Cyclic Softening ◽  
Stress And Strain ◽  
Stress Strain ◽  
Test Configuration ◽  
Uniaxial Test ◽  
Strain Behavior ◽  
Strain Data ◽  
Low Modulus

Abstract Our study has shown that the tensile bar or dumbbell gives higher values for failure stress and strain than does either the ring or oval specimen. This should be expected since the tensile bar permits a primarily uniaxial test and one without the stress-concentrating pins used for the ring and oval. However, it is very difficult to obtain accurate low-strain data with the tensile bar. Also, the strain rate is not constant because of tab deformation. The ring, oval, and tensile bar show agreement for values of stress and strain above 100 per cent strain but below failure. For soft, low modulus stocks the ring and oval agree at low strains. For stock with tensile modulus values above 1000 psi, the bending stress and strain, required to straighten the ring to its in-test configuration, significantly affect the data. There is less ambiguity in reducing the data from tests run with the oval than from those run with the ring, whether reduction is done manually or through direct acquisition by computer. This is again because of the initial straightening of the ring. For both the ring and oval, the material in contact with the pin experiences non-uniaxial deformation and becomes the site of failure. Yielding, as defined in this paper, can be related to hysteresis effects and hence to the phenomenon known as cyclic softening. The stress at 300 per cent strain and the stress and strain at failure are not sufficient to characterize stress-strain behavior, particularly for thermoplastic elastomers.

scholarly journals Deformation mechanisms of thermoplastic elastomers: Stress-strain behavior and constitutive modeling

Polymer ◽  
2017 ◽  
Vol 128 ◽  
pp. 87-99 ◽  
Author(s):  
Hansohl Cho ◽  
Steffen Mayer ◽  
Elmar Pöselt ◽  
Markus Susoff ◽  
Pieter J. in 't Veld ◽  
...  
Keyword(s):  
Constitutive Modeling ◽  
Thermoplastic Elastomers ◽  
Deformation Mechanisms ◽  
Stress Strain ◽  
Strain Behavior

Stress Strain Behavior of Steel Fibre Based Concrete in Compression

2012 ◽  
Vol 1 (3) ◽  
pp. 32-38
Author(s):  
Tantary M.A ◽  
◽  
Upadhyay A ◽  
Prasad J ◽  
◽  
...  
Keyword(s):  
Steel Fibre ◽  
Stress Strain ◽  
Strain Behavior

Cord/Rubber Material Properties

1985 ◽  
Vol 58 (4) ◽  
pp. 830-856 ◽  
Author(s):  
R. J. Cembrola ◽  
T. J. Dudek
Keyword(s):  
Finite Element ◽  
Material Model ◽  
Rubber Composites ◽  
Stress Strain ◽  
Element Analysis ◽  
Rubber Layer ◽  
Strain Behavior ◽  
Nonlinear Stress ◽  
Interlaminar Shear ◽  
Mechanics Of Composite Materials

Abstract Recent developments in nonlinear finite element methods (FEM) and mechanics of composite materials have made it possible to handle complex tire mechanics problems involving large deformations and moderate strains. The development of an accurate material model for cord/rubber composites is a necessary requirement for the application of these powerful finite element programs to practical problems but involves numerous complexities. Difficulties associated with the application of classical lamination theory to cord/rubber composites were reviewed. The complexity of the material characterization of cord/rubber composites by experimental means was also discussed. This complexity arises from the highly anisotropic properties of twisted cords and the nonlinear stress—strain behavior of the laminates. Micromechanics theories, which have been successfully applied to hard composites (i.e., graphite—epoxy) have been shown to be inadequate in predicting some of the properties of the calendered fabric ply material from the properties of the cord and rubber. Finite element models which include an interply rubber layer to account for the interlaminar shear have been shown to give a better representation of cord/rubber laminate behavior in tension and bending. The application of finite element analysis to more refined models of complex structures like tires, however, requires the development of a more realistic material model which would account for the nonlinear stress—strain properties of cord/rubber composites.

Compressive stress–strain behavior of steel fiber reinforced-recycled aggregate concrete

2014 ◽  
Vol 46 ◽  
pp. 65-72 ◽  
Author(s):  
Jodilson Amorim Carneiro ◽  
Paulo Roberto Lopes Lima ◽  
Mônica Batista Leite ◽  
Romildo Dias Toledo Filho
Keyword(s):  
Compressive Stress ◽  
Steel Fiber ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Fiber Reinforced ◽  
Stress Strain ◽  
Aggregate Concrete ◽  
Strain Behavior

Effect of cooling rates on stress-strain behavior in Au-47.5 at.%Cd alloy

1978 ◽  
Vol 12 (3) ◽  
pp. 265-269 ◽  
Author(s):  
S. Miura ◽  
F. Hori ◽  
N. Nakanishi
Keyword(s):  
Stress Strain ◽  
Cooling Rates ◽  
Strain Behavior
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