Plastic deformation and performance of engineering polymer materials
作者:
Eduard F. Oleinik,
Olga B. Salamatina,
Serge N. Rudnev,
Serge V. Shenogin,
期刊:
Polymers for Advanced Technologies
(WILEY Available online 1995)
卷期:
Volume 6,
issue 1
页码: 1-9
ISSN:1042-7147
年代: 1995
DOI:10.1002/pat.1995.220060101
出版商: John Wiley&Sons, Ltd.
关键词: Deformation calorimetry;Deformation work;Deformation heat;Mechanism;Glass polymer;Plastic deformation;Polymer;Stored energy of cold work
数据来源: WILEY
摘要:
AbstractThe plastic deformation mechanism operating in polymer glasses is analyzed. The whole process consists of two main stages: nucleation of special shear defects, called PSTs (plastic shear transformations), and their disappearance. The important feature of plastic deformation of glasses is the storage of a large amount of internal energy ΔUdefupon straining. Such energy storage is the critical issue for mechanical performance of polymeric material: if the amount of stored energy is high, the appearance of macroscopic failure is very probable while glassy materials collecting a small amount of stored deformation energy are quite ductile. It is proposed that the rate of disappearance of PSTs is a key factor in dissipation of stored deformation energy. A parameter describing the dissipation ability of material upon deformation is introduced
点击下载:
PDF
(920KB)
返 回