Roughness of moving elastic lines - crack and wetting fronts

Details Roughness of moving elastic lines - crack and wetting fronts Roughness of moving elastic lines - crack and wetting fronts

2007-07-30

arxiv.org/abs/0707.4453v1

Phys. Rev. E 76 051601 (2007)

Physics

Condensed Matter

Materials Science

15 pages, 6 figures

Scientific paper

10.1103/PhysRevE.76.051601

We investigate propagating fronts in disordered media that belong to the universality class of wetting contact lines and planar tensile crack fronts. We derive from first principles their nonlinear equations of motion, using the generalized Griffith criterion for crack fronts and three standard mobility laws for contact lines. Then we study their roughness using the self-consistent expansion. When neglecting the irreversibility of fracture and wetting processes, we find a possible dynamic rough phase with a roughness exponent of $\zeta=1/2$ and a dynamic exponent of z=2. When including the irreversibility, we conclude that the front propagation can become history dependent, and thus we consider the value $\zeta=1/2$ as a lower bound for the roughness exponent. Interestingly, for propagating contact line in wetting, where irreversibility is weaker than in fracture, the experimental results are close to 0.5, while for fracture the reported values of 0.55--0.65 are higher.

Affiliated with

Also associated with

No associations

Rating

Roughness of moving elastic lines - crack and wetting fronts 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 Roughness of moving elastic lines - crack and wetting fronts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roughness of moving elastic lines - crack and wetting fronts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-360124