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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 49: Gels, Polymer Networks and Elastomers I

CPP 49.2: Vortrag

Donnerstag, 12. März 2026, 11:45–12:00, ZEU/0255

Strain-stiffening critical exponents of fibre networks under uni-axial deformation — •Atharva Pandit¹ and Abhinav Sharma^1,2 — ¹Institut für Physik, Universität Augsburg, 86159 Augsburg, Deutschland — ²Bereich Theorie der Polymere, Leibniz-Institut für Polymerforschung, 01069 Dresden, Deutschland

Disordered fibre networks exhibit a floppy to rigid mechanical phase transition as a function of connectivity. Sub-isostatically connected networks can undergo this transition via straining. Critical exponents governing this transition have been estimated theoretically and by numerical simulations of various types of networks. We present improved results, achieved through a combination of refined numerical simulations, larger system sizes and incorporation of theoretical predictions for better post-simulation analysis. A linear evolution of the critical strain and critical exponents is observed as the network is sheared while being subjected to non-volume-preserving uni-axial deformations.

Keywords: Critical exponents; Disordered fibre networks; Strain & connectivity driven rigidity transition; Scaling laws; Non-mean-field critical behaviour