7 papers
Elastic turbulence in highly entangled polymers and wormlike micelles
Theo A. Lewy, Suzanne M. Fielding, Peter D. Olmsted +1
We show theoretically that an initially homogeneous planar Couette flow of a concentrated polymeric fluid is linearly unstable to the growth of two-dimensional (2D) perturbations,…
Viscoelasticity and elastoplasticity in the power law creep and yielding of gels and fibre network materials under stress
Michael J. Hertaeg, Suzanne M. Fielding
We study computationally the creep and yielding of athermal gels and fibre network materials under a constant imposed shear stress, within a minimal model of interconnected filamen…
Toughness of double network hydrogels: the role of reduced stress propagation
Samuel B. Walker, Suzanne M. Fielding
Double network hydrogels show remarkable mechanical performance, combining high strength and fracture toughness with sufficient stiffness to bear load, despite containing only a lo…
Ultra-delayed material failure via shear banding after straining an amorphous material
Henry A. Lockwood, Emily S. Carrington, Suzanne M. Fielding
We predict a phenomenon of catastrophic material failure arising suddenly within an amorphous material, with an extremely long delay time since the material was last deformed. By s…
Recoverable strain in amorphous materials: the role of ongoing plastic events following initial elastic recoil
Henry A. Lockwood, Suzanne M. Fielding
Recoverable strain is the strain recovered once a stress is removed from a body, in the direction opposite to that in which the stress had acted. To date, the phenomenon has been u…
Shear banding as a cause of non-monotonic stress relaxation after flow cessation
Vanessa K. Ward, Suzanne M. Fielding
Recent flow cessation experiments on soft materials have shown a counter-intuitive non-monotonic relaxation of the shear stress: following the switch-off of a steady imposed shear…