A multiphase internal state variable model with rate equations for predicting elastothermoviscoplasticity and damage of fiber-reinforced polymer composites

2019 ◽  
Vol 230 (5) ◽  
pp. 1745-1780 ◽  
Author(s):  
Ge He ◽  
Yucheng Liu ◽  
D. J. Bammann ◽  
D. K. Francis ◽  
M. Q. Chandler ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Internal State ◽  
Fiber Reinforced Polymer ◽  
Rate Equations ◽  
Internal State Variable ◽  
Variable Model ◽  
State Variable ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites ◽  
State Variable Model

A Multiphase Internal State Variable Model With Rate Equations for Predicting Elastothermoviscoplasticity and Damage of Fiber Reinforced Polymer Composites

2017 ◽  
Author(s):  
Ge He ◽  
Yucheng Liu ◽  
D. J. Bammann ◽  
M. F. Horstemeyer
Keyword(s):  
Internal State ◽  
Damage Model ◽  
Matrix Cracking ◽  
Fiber Reinforced Polymer ◽  
Rate Equations ◽  
Internal State Variable ◽  
Fiber Reinforced ◽  
Variable Model ◽  
State Variable ◽  
Reinforced Polymer

This paper agglomerates an Internal State Variable (ISV) model for polymers (Bouvard et al., 2010, 2013) with damage evolution (Horstemeyer and Gokhale, 1999: Horstemeyer et al., 2000; Francis et al., 2014) into a multiphase ISV framework (Rajagopal and Tao, 1995; Bammann et al., 1996) that features a finite strain theoretical framework for Fiber Reinforced Polymer (FRP) composites under various stress states, temperatures, strain rates, and history dependencies. In addition to the inelastic ISVs for the polymer matrix and interphase, new ISVs associated with the interaction between phases are introduced. A scalar damage variable is employed to capture the damage history of such material, which is a result of three damage modes: matrix cracking, fiber breakage, and deterioration of the fiber-matrix interface, and each damage model was well calibrated to the experimental data from Rolland et al., (2016). The constitutive model developed herein arises employing standard postulates of continuum mechanics with the kinematics, thermodynamics, and kinetics being internally consistent.

scholarly journals Formulation of a macroscale corrosion damage internal state variable model

2014 ◽  
Vol 51 (6) ◽  
pp. 1235-1245 ◽  
Author(s):  
Christopher A. Walton ◽  
M.F. Horstemeyer ◽  
Holly J. Martin ◽  
D.K. Francis
Keyword(s):  
Internal State ◽  
Corrosion Damage ◽  
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
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