Abstract
The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers are scrutinized using molecular dynamics simulations. A wide range chain length of alkane is tested under tension and shear with various temperatures. We find that the broken rate (the broken bond number to all polymer chain number ratios) under tension and shear increases with increasing chain length and temperature. For a given chain length and temperature, the broken rates under shear are always higher than those under tension at a same large strain. For a given chain length, the tensile and shear stresses decrease with increasing temperature. We propose three typical fracture mechanisms to effectively elucidate the ductile fracture response based on the predominance of chain scission process.
| Original language | English |
|---|---|
| Title of host publication | 13th International Conference on Fracture 2013, ICF 2013 |
| Publisher | Chinese Society of Theoretical and Applied Mechanics |
| Pages | 3975-3984 |
| Number of pages | 10 |
| Volume | 5 |
| Publication status | Published - 2013 Jan 1 |
| Externally published | Yes |
| Event | 13th International Conference on Fracture 2013, ICF 2013 - Beijing, China Duration: 2013 Jun 16 → 2013 Jun 21 |
Other
| Other | 13th International Conference on Fracture 2013, ICF 2013 |
|---|---|
| Country | China |
| City | Beijing |
| Period | 13/6/16 → 13/6/21 |
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Keywords
- Chain length
- Failure
- Linear polymers
- Molecular dynamics
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
Cite this
The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers. / Zhao, Junhua; Rabczuk, Timon.
13th International Conference on Fracture 2013, ICF 2013. Vol. 5 Chinese Society of Theoretical and Applied Mechanics, 2013. p. 3975-3984.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers
AU - Zhao, Junhua
AU - Rabczuk, Timon
PY - 2013/1/1
Y1 - 2013/1/1
N2 - The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers are scrutinized using molecular dynamics simulations. A wide range chain length of alkane is tested under tension and shear with various temperatures. We find that the broken rate (the broken bond number to all polymer chain number ratios) under tension and shear increases with increasing chain length and temperature. For a given chain length and temperature, the broken rates under shear are always higher than those under tension at a same large strain. For a given chain length, the tensile and shear stresses decrease with increasing temperature. We propose three typical fracture mechanisms to effectively elucidate the ductile fracture response based on the predominance of chain scission process.
AB - The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers are scrutinized using molecular dynamics simulations. A wide range chain length of alkane is tested under tension and shear with various temperatures. We find that the broken rate (the broken bond number to all polymer chain number ratios) under tension and shear increases with increasing chain length and temperature. For a given chain length and temperature, the broken rates under shear are always higher than those under tension at a same large strain. For a given chain length, the tensile and shear stresses decrease with increasing temperature. We propose three typical fracture mechanisms to effectively elucidate the ductile fracture response based on the predominance of chain scission process.
KW - Chain length
KW - Failure
KW - Linear polymers
KW - Molecular dynamics
UR - http://www.scopus.com/inward/record.url?scp=84898827209&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84898827209&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84898827209
VL - 5
SP - 3975
EP - 3984
BT - 13th International Conference on Fracture 2013, ICF 2013
PB - Chinese Society of Theoretical and Applied Mechanics
ER -