Analysis of Neck Propagation in Polymeric Fibres Including the Effects of Viscoplasticity

1988 ◽  
Vol 110 (4) ◽  
pp. 395-400 ◽  
Author(s):  
P. Tug¯cu ◽  
K. W. Neale
Keyword(s):  
Finite Element ◽  
Constitutive Model ◽  
Strain Rate ◽  
Rate Dependence ◽  
Strain Rate Dependence ◽  
Stress Strain ◽  
Finite Element Scheme ◽  
Element Scheme ◽  
Neck Propagation ◽  
Stretching Process

The effects of material strain-rate dependence on necking and neck propagation in polymeric fibres are analyzed. Using a finite element scheme together with an elastic-viscoplastic constitutive model the entire load-deformation histories of round specimens are computed. Stress-strain distributions as well as the evolution of the specimen profiles are given at various stages of the axisymmetric stretching process. Comparisons with rate-independent response are also presented.

Tensile Stress-Strain Curves Modeling of Four Kinds of Solders with Temperature and Rate Dependence

2005 ◽  
Vol 297-300 ◽  
pp. 905-911 ◽  
Author(s):  
Xu Chen ◽  
Li Zhang ◽  
Masao Sakane ◽  
Haruo Nose
Keyword(s):  
Tensile Stress ◽  
Constitutive Model ◽  
Strain Rate ◽  
Constant Strain Rate ◽  
Tensile Tests ◽  
Strain Rate Range ◽  
Rate Dependence ◽  
Strain Rates ◽  
Stress Strain ◽  
Rate Range

A series of tensile tests at constant strain rate were conducted on tin-lead based solders with different Sn content under wide ranges of temperatures and strain rates. It was shown that the stress-strain relationships had strong temperature- and strain rate- dependence. The parameters of Anand model for four solders were determined. The four solders were 60Sn-40Pb, 40Sn-60Pb, 10Sn-90Pb and 5Sn-95Pb. Anand constitutive model was employed to simulate the stress-strain behaviors of the solders for the temperature range from 313K to 398K and the strain rate range from 0.001%sP -1 P to 2%sP -1 P. The results showed that Anand model can adequately predict the rate- and temperature- related constitutive behaviors at all test temperatures and strain rates.

scholarly journals Strain Rate Dependence of Stress-Strain Curves in a Ti-Fe-O Alloy.

1997 ◽  
Vol 37 (10) ◽  
pp. 1016-1022 ◽  
Author(s):  
Hideaki Moriya ◽  
Kotobu Nagai ◽  
Yoshikuni Kawabe ◽  
Atsumasa Okada
Keyword(s):  
Strain Rate ◽  
Rate Dependence ◽  
Strain Rate Dependence ◽  
Stress Strain
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