51 citations · 64 across the 14 of their papers we have counts for
6 papers · 1 filter
Nucleation and propagation of brittle fracture as a constrained energy minimization problem
Oscar Lopez-Pamies, Farhad Kamarei, Gilles A. Francfort +1
This paper presents a macroscopic, or continuum, theory aimed at describing when, where, and why cracks nucleate and propagate in nominally elastic brittle materials under monotoni…
Breaking Four-Point and Three-Point Bending Tests
Subhrangsu Saha, Jeffery R. Roesler, Oscar Lopez-Pamies
Since their initial standardizations in the 1930s and 1950s, the so-called four-point and three-point bending tests on unnotched beams have been embraced by practitioners as two po…
On the effects of material strength in dynamic fracture: A phase-field study
Yangyuanchen Liu, Oscar Lopez-Pamies, John E. Dolbow
Over the past seven years, full-field analyses of a wide range of classical as well as modern quasi-static fracture experiments on nominally elastic brittle materials -- ranging fr…
Nucleation of fracture: The first-octant evidence against classical variational phase-field models
Farhad Kamarei, John E. Dolbow, Oscar Lopez-Pamies
As a companion work to [1], this Note presents a series of simple formulae and explicit results that illustrate and highlight why classical variational phase-field models cannot po…
Classical variational phase-field models cannot predict fracture nucleation
Oscar Lopez-Pamies, John E. Dolbow, Gilles A. Francfort +1
Notwithstanding the evidence against them, classical variational phase-field models continue to be used and pursued in an attempt to describe fracture nucleation in elastic brittle…
The revisited phase-field approach to brittle fracture: Application to indentation and notch problems
Aditya Kumar, K. Ravi-Chandar, Oscar Lopez-Pamies
In a recent contribution, Kumar, Bourdin, Francfort, and Lopez-Pamies (J. Mech. Phys. Solids 142:104027, 2020) have introduced a comprehensive macroscopic phase-field theory for th…