fracture

I am happy to announce that a postdoctoral fellowship is available in the Dolbow Research Group at Duke University, working in the area of computational fracture mechanics.  The fellowship provides the opportunity to work on an emerging class of complete fracture models that incorporate the three ingredients that are necessary to be predictive with elastic brittle materials: their elasticity, their fracture toughness, and their strength.  

by Oscar Lopez-Pamies, John E. Dolbow, Gilles A. Francfort, and Chris J. Larsen

Abstract

In this work, we show that the combination of material quenched disorder (of finite strength/amplitude and correlation length) and a 2D tip-splitting instability (that gives rise to extra fracture surfaces) is at the heart of the spatiotemporal dynamics of cracks in 3D. Specifically, it is shown to account for the widely observed limiting (terminal) velocity of cracks, mirror-mist-hackle sequence of morphological transitions, crack macro-branching and a 3D-to-2D transition, out-of-plane crack front waves and the properties of micro-branches.  

Following the previous Blog entry on 3D fracture and out-of-plane crack structures: the essential role of material disorder, we add here a related manuscript (see also attached PDF):

Size selection of crack front defects: Multiple fracture-plane interactions and intrinsic lengthscales

In this pair of preprints (see also attached PDFs):

Quenched disorder and instability control dynamic fracture in three dimensions

Facet formation in slow three-dimensional fracture

I am deeply saddened by the passing of Andre Pineau in Paris yesterday. I happened to be one of ~100 PhD students he graduated over the course of his career.

EMI/PMC 2024, Chicago, IL, 2024 – MiniSymposium #0103 “Mechanics of granular materials: Modeling and characterization”

We are seeking a highly talented and motivated researcher to work within our strong research group “Dynamics of material fracture” oriented at experimental and numerical investigation of mechanical response and failure of materials at high

The Gordon Research Conference on the Science of Adhesion is this summer (23-28 July 2023).  The meeting will be held on the campus of Mount Holyoke College in western Massachusetts and will have more than 20 invited talks from world leaders in the fields of adhesion, soft matter, and materials. This is a great meeting for students and early career researchers to get connected to the community. Poster presentations are strongly encouraged from all participants, and poster abstracts can still be submitted.

Deadline: 5th April 2023 !

I am looking to admit at least two PhD students in the broad area of Fracture Mechanics at the Department of Applied Mechanics, Indian Institute of Technology Delhi.

The Multiscale Computational Mechanics and Biomechanics Lab (MCMB Lab) at Drexel University is seeking for two immediate postdoctoral positions to conduct research on modeling fracture and healing phenomena in autonomous self-healing concrete structures. Looking for motivated postdoctoral candidates with great communication skills interested in computational damage/healing analysis to develop computational frameworks.

Essential Functions

Structural Integrity and MEchanical Design (SIMED) group is seeking a 17-month full-time Postdoctoral Researcher (or Associate Researcher, not holding a PhD) in Computational Fracture Mechanics. The successful applicant will work at the Polytechnic Engineering and Architecture Department (DPIA) of the University of Udine, under Dr Enrico Salvati’s supervision.

The unified mechanics theory (UMT) is ab-initio unification of the second law of thermodynamics and Newton's universal laws of motion, in which Boltzmann's second law of entropy formulation governs dissipation & degradation. Hence, the unified mechanics theory does not require any empirical dissipation & degradation potential function or an empirical void evolution function. Material degradation is quantified on the Thermodynamic state index (TSI) axis based on the specific entropy production, which starts at zero and asymptotically approaches one at failure.

Dear Colleagues We are looking for a post-doctoral level researcher for a 18 month project in collaboration with a startup company EMTD lab and the European Space Agency. The work to be done is related to radiation shielding and fatigue fracture. We are looking for people with a background in polycrystalline fracture, phase field/enriched finite element methods and multi-scale methods. Knowledge of metallurgy and crystallography would be welcome. Due to confidentiality, we cannot divulge more information at this stage.

Yijie Cai, Jie Ma, Zihang Shen, Xianmin Shao, Zheng Jia *, Shaoxing Qu, Enhancing the fracture resistance of hydrogels by regulating the energy release rate via bilayer designs: Theory and experiments, Journal of the Mechanics and Physics of Solids, 170, 105125 (2023) 

I have a post-doc position for up to 18 months at Imperial College London, funded by Rolls Royce, working on dislocation mechanics modelling for problems occuring in materials for nuclear energy applications, full advert and application from the link below. Closing date 27th October 2022, starting as soon as possible, at least within the next 6 months. https://www.imperial.ac.uk/jobs/description/ENG02285/research-assistant-associate-mechanics-mod

1 Postdoctoral Position on Theoretical/Computational Biomechanics of Soft Tissue Cutting, Deformation, Damage, and Fracture @ University of British Columbia, Vancouver, Canada

Structural Integrity and MEchanical Design (SIMED) group is seeking a PhD candidate to conduct research in computational solid mechanics, mainly applied to structural problems. The successful applicant will work at the Polytechnic Engineering and Architecture Department (DPIA) of the University of Udine, under Dr Enrico Salvati’s supervision.

We at MIT, welcome you to join us this summer, in person, for a hands-on design-to-product Predictive Multiscale Materials Design course from June 13-17, 2022. All course registrants will receive an MIT certificate upon completion.

https://professional.mit.edu/course-catalog/predictive-multiscale-materi...

Structural Integrity and MEchanical Design (SIMED) group is seeking a 1-year full-time Postdoctoral Researcher in Machine Learning applied to fracture mechanics. The successful applicant will work at the Polytechnic Engineering and Architecture Department (DPIA) of the University of Udine, under Dr Enrico Salvati’s supervision.

I have a post-doc position for 24 months at Imperial College London, funded by Rolls Royce, working on dislocation mechanics modelling for problems in nuclear materials, full advert and application from the link below. Closing date 14th November 2021, starting as soon as possible, at least within the next 6 months.

https://www.imperial.ac.uk/jobs/description/ENG01880/research-associate-...