Necking Instability Caused by Strain Softening of Poly(butylene succinate)


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Abstract

Plastic strain of amorphous poly(butylene succinate) films in stretching was studied. Self-oscillating necking was detected at very low stretching rates, at which, according to the existing concepts, oscillations are impossible. It was concluded that the self-oscillations are a consequence of a previously unknown mechanism of instability of plastic flow.

About the authors

A. S. Kechek’yan

Enikolopov Institute of Synthetic Polymer Materials,
Russian Academy of Sciences

Author for correspondence.
Email: kec-alexander@yandex.ru
Russian Federation, Moscow, 117393

S. L. Bazhenov

Semenov Institute of Chemical Physics, Russian Academy
of Sciences

Author for correspondence.
Email: bazhenov_sl@rambler.ru
Russian Federation, Moscow, 119991

K. Z. Monakhova

Enikolopov Institute of Synthetic Polymer Materials,
Russian Academy of Sciences

Email: bazhenov_sl@rambler.ru
Russian Federation, Moscow, 117393

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