User login

Navigation

You are here

#fracture

Parag Tandaiya's picture

Shear fracture in bulk metallic glass composites

In situ dendrite reinforced Bulk Metallic Glass matrix composites (BMGCs) are known to overcome poor ductility and fracture response exhibited by monolithic bulk metallic glasses (BMGs). In this paper (Shear fracture in bulk metallic glass composites) recently published by our group in Acta Materialia, we report mode I and mode II fracture experiments on the above in situ BMGCs containing transforming and non-transforming dendrites.

Erik Bitzek's picture

1st virtual colloquium on Fracture across Scales

I would like to direct your attention to our 1st Virtual FRASCAL Colloquium which is organized by the DFG funded Research Training Group GRK 2423 "FRASCAL - Fracture across Scales".

Post-doc in biological puncture mechanics at the University of Illinois, Urbana-Champaign

A Postdoctoral researcher position is available in the Anderson lab in the Department of Evolution, Ecology and Behavior at the University of Illinois, Urbana-Champaign. The Anderson lab seeks a post-doctoral scholar with strong experience in some combination of the following: experimental fracture mechanics, Impact dynamics, dynamic fracture modeling, energetics and/or biomechanics. Please see the attached ad for more information. More information about the Anderson Lab can be found here: https://www.philipslanderson.com/

Emilio Martínez Pañeda's picture

Phase field fracture modelling using quasi-Newton methods and a new adaptive step scheme

Dear iMechanicians,

I hope this paper is of interest to you. We show that quasi-Newton methods make monolithic phase field fracture implementations very robust. Convergence and computations times orders of magnitude smaller than the usual staggered approaches are demonstrated in complex problems such as unstable cracking, fatigue or dynamic crack branching.

Emilio Martínez Pañeda's picture

Mode I crack tip fields: strain gradient plasticity theory versus J2 flow theory

I hope some of you may find this work interesting. We show, analytically and numerically, that strain gradient plasticity predicts the existence of an inner elastic field adjacent to the crack tip, reminiscent of a dislocation-free zone. The fact that elastic strains dominate plastic strains near the crack tip implies a paradigm-shift with respect to previous crack tip asymptotic studies in plasticity and gradient plasticity, which neglect elastic strains. 

 

Emilio Martínez-Pañeda, Norman A. Fleck

Subscribe to RSS - #fracture

Recent comments

More comments

Syndicate

Subscribe to Syndicate