An internal state variable material model for predicting the time, thermomechanical, and stress state dependence of amorphous glassy polymers under large deformation

2013 ◽  
Vol 42 ◽  
pp. 168-193 ◽  
Author(s):  
J.L. Bouvard ◽  
D.K. Francis ◽  
M.A. Tschopp ◽  
E.B. Marin ◽  
D.J. Bammann ◽  
...  
Keyword(s):  
Stress State ◽  
Large Deformation ◽  
Internal State ◽  
State Dependence ◽  
Material Model ◽  
Glassy Polymers ◽  
Internal State Variable ◽  
State Variable ◽  
Stress State Dependence

A unified internal state variable material model for inelastic deformation and microstructure evolution in SS304

2014 ◽  
Vol 594 ◽  
pp. 352-363 ◽  
Author(s):  
R. Liu ◽  
M. Salahshoor ◽  
S.N. Melkote ◽  
T. Marusich
Keyword(s):  
Microstructure Evolution ◽  
Inelastic Deformation ◽  
Internal State ◽  
Material Model ◽  
Internal State Variable ◽  
State Variable

Study on the microstructure evolution during radial-axial ring rolling of IN718 using a unified internal state variable material model

2017 ◽  
Vol 128-129 ◽  
pp. 235-252 ◽  
Author(s):  
Xuefeng Tang ◽  
Baoyu Wang ◽  
Hua Zhang ◽  
Xiaobin Fu ◽  
Hongchao Ji
Keyword(s):  
Microstructure Evolution ◽  
Internal State ◽  
Material Model ◽  
Ring Rolling ◽  
Internal State Variable ◽  
State Variable ◽  
Axial Ring

scholarly journals Modeling and Analysis of a Screw Fitting Assembly Process Involving a Cast Magnesium Component

2020 ◽  
Vol 7 ◽  
Author(s):  
Kent Salomonsson ◽  
Ales Svoboda ◽  
Nils-Eric Andersson ◽  
Anders E. W. Jarfors
Keyword(s):  
Internal State ◽  
Material Model ◽  
Internal State Variable ◽  
Assembly Process ◽  
Element Analysis ◽  
Modeling And Analysis ◽  
State Variable ◽  
Physically Based ◽  
Cast Magnesium ◽  
Materials Behavior

A finite element analysis of a complex assembly was made. The material description used was a physically based material model with dislocation density as an internal state variable. This analysis showed the importance of the materials’ behavior in the process as there is discrepancy between the bolt head contact pressure and the internals state of the materials where the assembly process allows for recovery. The end state is governed by both the tightening process and the thermal history and strongly influenced by the thermal expansion of the AZ91D alloy.

scholarly journals Formulation of a damage internal state variable model for amorphous glassy polymers

2014 ◽  
Vol 51 (15-16) ◽  
pp. 2765-2776 ◽  
Author(s):  
D.K. Francis ◽  
J.L. Bouvard ◽  
Y. Hammi ◽  
M.F. Horstemeyer
Keyword(s):  
Internal State ◽  
Glassy Polymers ◽  
Internal State Variable ◽  
Variable Model ◽  
State Variable ◽  
State Variable Model

A general inelastic internal state variable model for amorphous glassy polymers

2010 ◽  
Vol 213 (1-2) ◽  
pp. 71-96 ◽  
Author(s):  
J. L. Bouvard ◽  
D. K. Ward ◽  
D. Hossain ◽  
E. B. Marin ◽  
D. J. Bammann ◽  
...  
Keyword(s):  
Internal State ◽  
Glassy Polymers ◽  
Internal State Variable ◽  
Variable Model ◽  
State Variable ◽  
State Variable Model

An internal state variable thermodynamic model for determining the Taylor-Quinney coefficient of glassy polymers

2017 ◽  
Vol 126 ◽  
pp. 261-269 ◽  
Author(s):  
Guojian Shao ◽  
Shengxin Zhu ◽  
Yana Wang ◽  
Qilin Zhao
Keyword(s):  
Thermodynamic Model ◽  
Internal State ◽  
Glassy Polymers ◽  
Internal State Variable ◽  
State Variable

A unified internal state variable material model for Ti2AlNb-alloy and its applications in hot gas forming

2019 ◽  
Vol 164 ◽  
pp. 105126 ◽  
Author(s):  
Yong Wu ◽  
Dongjun Wang ◽  
Zhiqiang Liu ◽  
Gang Liu
Keyword(s):  
Internal State ◽  
Material Model ◽  
Internal State Variable ◽  
Hot Gas ◽  
State Variable ◽  
Ti2alnb Alloy ◽  
Hot Gas Forming

Limit Plastic State of Notched Stripes with Stress State Dependent Properties

2012 ◽  
Vol 528 ◽  
pp. 79-88
Author(s):  
E.V. Lomakin ◽  
A.M. Melnikov
Keyword(s):  
Stress State ◽  
Constitutive Equations ◽  
State Dependence ◽  
Material Model ◽  
Plastic State ◽  
Plastic Properties ◽  
State Dependent ◽  
Isotropic Media ◽  
Properties Of Materials ◽  
Stress State Dependence

Behavior of isotropic media with stress state dependent plastic properties is studied in this paper. One of the possible general approaches to the formulation of constitutive equations of these materials is demonstrated. The derived equations are applied to the problem of tension of a notched stripe under plane stress conditions. Some general equations of stress state dependence of plastic properties of materials that can be used with large variety of models are derived in the case of hyperbolic constitutive equations. Theoretical results are compared with FEM solution of this problem for the Drucker-Prager material model.

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