scholarly journals Modeling of the Temperature-Dependent and Strain Rate-Dependent Dynamic Behavior of Glass Fiber-Reinforced Polyurethane Foams

2019 ◽  
Vol 33 (6) ◽  
pp. 547-555
Author(s):  
Dong-Ju Lee ◽  
Sang-Beom Shin ◽  
Myung-Hyun Kim
Keyword(s):  
Strain Rate ◽  
Glass Fiber ◽  
Dynamic Behavior ◽  
Polyurethane Foams ◽  
Fiber Reinforced ◽  
Temperature Dependent ◽  
Rate Dependent ◽  
Glass Fiber Reinforced

Numerical Prediction Method for Elasto-Viscoplastic Behavior of Glass Fiber Reinforced Polyurethane Foam Under Various Compressive Loads and Cryogenic Temperatures

2015 ◽  
Author(s):  
Chi-Seung Lee ◽  
Myung-Sung Kim ◽  
Kwang-Ho Choi ◽  
Myung-Hyun Kim ◽  
Jae-Myung Lee
Keyword(s):  
Constitutive Model ◽  
Strain Rate ◽  
Glass Fiber ◽  
Polyurethane Foam ◽  
Prediction Method ◽  
Nonlinear Behavior ◽  
Cryogenic Temperatures ◽  
Fiber Reinforced ◽  
Rate Dependent ◽  
Glass Fiber Reinforced

In the present study, the material characteristics of a glass fiber-reinforced polyurethane foam (RPUF) which is widely adopted to a liquefied natural gas (LNG) insulation system was investigated by a series of compressive tests under room and cryogenic temperatures. In addition, a temperature- and strain rate-dependent constitutive model was proposed to describe the material nonlinear behavior such as increase of yield stress and plateau according to temperature and strain rate variations. The elasto-viscoplastic model was transformed to an implicit form, and was implemented into the ABAQUS user-defined subroutine, namely, UMAT. Through a number of simulation using the developed subroutine, the various stress-strain relationships of RPUF were numerically predicted, and the material parameters associated with the constitutive model were identified. In order to validate the proposed method, the computational results were compared to a series of test of RPUF.

A temperature- and strain-rate-dependent isotropic elasto-viscoplastic model for glass-fiber-reinforced polyurethane foam

2015 ◽  
Vol 84 ◽  
pp. 163-172 ◽  
Author(s):  
Chi-Seung Lee ◽  
Myung-Sung Kim ◽  
Seong-Bo Park ◽  
Jeong-Hyeon Kim ◽  
Chang-Seon Bang ◽  
...  
Keyword(s):  
Strain Rate ◽  
Glass Fiber ◽  
Polyurethane Foam ◽  
Fiber Reinforced ◽  
Viscoplastic Model ◽  
Rate Dependent ◽  
Glass Fiber Reinforced

Quasi-Static Flexural and Tensile Behavior of Glass Fiber Reinforced Polymer

2013 ◽  
Vol 845 ◽  
pp. 302-305
Author(s):  
Syed Azwan ◽  
Behzad Abdi ◽  
Yahya Mohd Yazid ◽  
Ayob Amran
Keyword(s):  
Strain Rate ◽  
Glass Fiber ◽  
Testing Machine ◽  
Tensile Loading ◽  
Tensile Behavior ◽  
Fiber Reinforced ◽  
Loading Test ◽  
Three Point Bending ◽  
Glass Fiber Reinforced ◽  
Fiber Reinforce

In this paper, glass fiber reinforce polymer subject to quasi-static three point bending loading and tensile loading was studied experimentally. Glass fiber reinforced made of chopped strand mat (CSM) were used in this study. Several samples were prepared and tested by using Instron universal testing machine at different strain rate including 1mm/min, 10mm/min and 100mm/min and all of the tests were repeated three times in order to minimize experimental error and the average of the obtained results were used for further analysis. The load-extension curves and stress-strain curve of glass fiber reinforce subject to three point bending and tensile loading test were determined at different strain rate and the obtained results were compared together. As results of this study, it has found that the strain rate has effect on flexural and tensile behavior of glass fiber reinforce.

An extensive study on strain dependence of glass fiber-reinforced polymer-based composites

2021 ◽  
pp. 030932472110437
Author(s):  
Ashkan Farazin ◽  
Afrasyab Khan
Keyword(s):  
Strain Rate ◽  
Glass Fiber ◽  
Glass Fibers ◽  
Experimental Studies ◽  
Fiber Reinforced Polymer ◽  
Strain Rates ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced

Fiber-reinforced polymer-based composites may experience various strain rates under different dynamic loads. As the mechanical behavior of these composites varies with strain rate, their response will be dependent on the strain rate. This paper presents a comprehensive review on glass fibers and composites reinforced with these fibers, as the most practical polymer-based composite, under dynamic loading. First, the properties of long glass fibers under different strain rates will be reviewed in detail. In the following, experimental studies on the effects of strain rate on various types of glass fiber-reinforced polymer-based composites will be categorized and presented. The behavior of thermoset polymers will be also addressed under different strain rates. Finally, various analytical and numerical macromechanical and micromechanical models will be comprehensively described for this type of composites.

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