A Model for Mechanically Induced Densification of Glassy PolymersSource: Journal of Applied Mechanics:;1999:;volume( 066 ):;issue: 003::page 702Author:A. D. Drozdov
DOI: 10.1115/1.2791621Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Constitutive equations are derived for the isothermal viscoelastic response of glassy polymers at small strains. An amorphous polymer is modeled as a composite material consisting of a temporary network of long chains, immobile voids, and free volume gas diffusing through the network. The model is applied to analyze stress-induced densification of polymers in tensile and compressive relaxation tests. It is demonstrated that the stress-strain relations adequately predict a decrease in the specific volume observed in uniaxial experiments on polycarbonate.
keyword(s): Polymers , Networks , Stress-strain relations , Composite materials , Relaxation (Physics) , Stress , Chain AND Constitutive equations ,
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| contributor author | A. D. Drozdov | |
| date accessioned | 2017-05-08T23:58:45Z | |
| date available | 2017-05-08T23:58:45Z | |
| date copyright | September, 1999 | |
| date issued | 1999 | |
| identifier issn | 0021-8936 | |
| identifier other | JAMCAV-26478#702_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/121632 | |
| description abstract | Constitutive equations are derived for the isothermal viscoelastic response of glassy polymers at small strains. An amorphous polymer is modeled as a composite material consisting of a temporary network of long chains, immobile voids, and free volume gas diffusing through the network. The model is applied to analyze stress-induced densification of polymers in tensile and compressive relaxation tests. It is demonstrated that the stress-strain relations adequately predict a decrease in the specific volume observed in uniaxial experiments on polycarbonate. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A Model for Mechanically Induced Densification of Glassy Polymers | |
| type | Journal Paper | |
| journal volume | 66 | |
| journal issue | 3 | |
| journal title | Journal of Applied Mechanics | |
| identifier doi | 10.1115/1.2791621 | |
| journal fristpage | 702 | |
| journal lastpage | 708 | |
| identifier eissn | 1528-9036 | |
| keywords | Polymers | |
| keywords | Networks | |
| keywords | Stress-strain relations | |
| keywords | Composite materials | |
| keywords | Relaxation (Physics) | |
| keywords | Stress | |
| keywords | Chain AND Constitutive equations | |
| tree | Journal of Applied Mechanics:;1999:;volume( 066 ):;issue: 003 | |
| contenttype | Fulltext |