Viscoplasticity and large-scale chain relaxation in glassy-polymeric strain hardening

Details Viscoplasticity and large-scale chain relaxation in glassy-polymeric strain hardening Viscoplasticity and large-scale chain relaxation in glassy-polymeric strain hardening

2010-04-03

arxiv.org/abs/1004.0410v2

Physical Review E, 82, 041803 (2010)

Physics

Condensed Matter

Soft Condensed Matter

The theoretical treatment of the mechanical response has been significantly revised, and the arguments for coherent relaxation

Scientific paper

A simple theory for glassy polymeric mechanical response which accounts for large scale chain relaxation is presented. It captures the crossover from perfect-plastic response to strong strain hardening as the degree of polymerization $N$ increases, without invoking entanglements. By relating hardening to interactions on the scale of monomers and chain segments, we correctly predict its magnitude. Strain activated relaxation arising from the need to maintain constant chain contour length reduces the $N$ dependence of the characteristic relaxation time by a factor $\sim \dot\epsilon N$ during active deformation at strain rate $\dot\epsilon$. This prediction is consistent with results from recent experiments and simulations, and we suggest how it may be further tested experimentally.

Affiliated with

Also associated with

No associations

Rating

Viscoplasticity and large-scale chain relaxation in glassy-polymeric strain hardening does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Viscoplasticity and large-scale chain relaxation in glassy-polymeric strain hardening, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Viscoplasticity and large-scale chain relaxation in glassy-polymeric strain hardening will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-198507