The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers

Junhua Zhao, Timon Rabczuk

Research output: Contribution to conferencePaper

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 languageEnglish
Pages3975-3984
Number of pages10
Publication statusPublished - 2013
Event13th International Conference on Fracture 2013, ICF 2013 - Beijing, China
Duration: 2013 Jun 162013 Jun 21

Other

Other13th International Conference on Fracture 2013, ICF 2013
CountryChina
CityBeijing
Period13/6/1613/6/21

Keywords

  • Chain length
  • Failure
  • Linear polymers
  • Molecular dynamics

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Zhao, J., & Rabczuk, T. (2013). The tensile and shear failure behavior dependence on chain length and temperature in amorphous polymers. 3975-3984. Paper presented at 13th International Conference on Fracture 2013, ICF 2013, Beijing, China.