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fracture

Teng zhang's picture

Predicting fracture energies and crack-tip fields of soft tough materials

Soft materials including elastomers and gels are pervasive in biological systems and technological applications. Whereas it is known that intrinsic fracture energies of soft materials are relatively low, how the intrinsic fracture energy cooperates with mechanical dissipation in process zone to give high fracture toughness of soft materials is not well understood. In addition, it is still challenging to predict fracture energies and crack-tip strain fields of soft tough materials.

linst06's picture

3D Printing of Highly Stretchable and Tough Hydrogels into Complex, Cellularized Structures

Sungmin Hong, Dalton Sycks, Hon Fai Chan, Shaoting Lin, Gabriel P. Lopez, Farshid Guilak, Kam W. Leong, Xuanhe Zhao, Advanced Materials, 27, 4035-4040, 2015. 

 

ndaphalapurkar's picture

Postdoctoral Fellow, Hopkins Extreme Materials Institute: Modeling the dynamic failure of geological materials

A new postdoctoral fellow position is available within the Hopkins Extreme Materials Institute (hemi.jhu.edu) at Johns Hopkins University.  The position is in the area of experiments and modeling of inelastic deformations in geological materials (including damage and micromechanics of fracture) under impact mechanical loading conditions.  The potential candidate will (a) assist in the development of theoretical and computational models for dynamic behavior and failure of geological materials, (b) closely interact with experts in x-ray phase

Post-doctoral position on multi-scale simulation of fracture (quasi-continuum methods)

Three post-doctoral positions are available at the University of Luxembourg with the ERC RealTCut project.
See http://www.legato-team.eu for details on the team and the attached PDF for the pre-requisites and possible research areas.

Regards,

Stéphane

Post-Doctoral Researcher - Fatigue/Fracture of Materials

DEPARTMENT:  Department of Energy

AGENCY:  National Energy Technology Laboratory

LEVEL:  Post-Doctoral

POSITION INFORMATION:  Temporary, 12 months full-time with the possibility of extension

DUTY LOCATION:  Albany, Oregon

pastewka's picture

CECAM Workshop "Chemical and structural transformations in materials under mechanical load"

We are pleased to announce a 4-day CECAM/Psi-k Workshop on

"Chemical and structural transformations in materials under mechanical load",

 that will take place at the EPFL campus in Lausanne from Tuesday 1st September to Friday 4th September 2015.

Fracture Symposium at the SES Annual Technical Conference

Dear Colleagues:

We are pleased to announce a mini-symposium on Fracture Mechanics at the 52nd Annual Technical Meeting of the Society of Engineering Science, to be held at the Texas A&M University, College Station, Texas, October 26-28, 2015.

Frank W. DelRio's picture

Fracture strength of micro- and nano-scale silicon components

Silicon devices are ubiquitous in many micro- and nano-scale technological applications, most notably microelectronics and microelectromechanical systems (MEMS).  Despite their widespread usage, however, issues related to uncertain mechanical reliability remain a major factor inhibiting the further advancement of device commercialization.  In particular, reliability issues related to the fracture of MEMS components have become increasingly important given continued reductions in critical feature sizes coupled with recent escalations in both MEMS device actuation forces and harsh usage

Giorgio Carta's picture

Temperature induced crack propagation in structured media

This paper describes the propagation of an edge crack in a semi-infinite triangular lattice, consisting of identical point masses connected by thermoelastic links. A change of temperature, represented by a time-periodic series of high-gradient temperature pulses, is applied at the boundary of the lattice. In order to make the initial crack advance in the lattice a failure criterion is imposed, whereby the links break as soon as they attain a prescribed elongation.

A DOCTORAL STUDENT POSITION IN FRACTURE OF SEA ICE

Aalto University School of Engineering in Finland has an open position for a doctoral student in the Arctic Marine and Ice Technology research group at the Department of Applied Mechanics. Our research group studies the behavior of ships and structures in ice, ice mechanics and also assesses the impact of sea ice on the safety of maritime transportation. An important part of our research is experimental work. For that we have excellent possibilities as we operate the Aalto Ice Tank, a 40 m × 40 m ice model basin.

A micromechanical analysis of the fracture properties of saturated porous media

A two-dimensional single edge crack problem is employed to investigate the fracture behavior of saturated poroelastic media. The media are mimicked by a micromechanical model consisting of elastic matrix and square arrays of voids with prescribed uniform pore pressure. Finite element method is used to simulate the fracture responses of the model subject to remote stress and pore pressure loading. The stress extrapolation method is extended for the porous media to calculate the nominal stress intensity factor (SIF) from the crack tip stress field.

Alejandro Mota's picture

2nd Call for Abstracts: USNCCM13 Minisymposium 414 on Recent Advances in Mesh Adaptivity for Inelasticity, Damage, Crack Propagation and Failure.

In this minisymposium we seek to highlight challenging problems in computational solid mechanics that require mesh adaptation methods for their solution. We focus on the finite element method and works that address large deformations and the accompanying inelasticity, damage, crack propagation and failure. Discussion will center on Lagrangian descriptions and determining the necessary computational components to resolve, preserve, and evolve the fields that govern these processes. Prototypical material systems may include, but are not limited to, ductile metals and biomaterials.

INTERNSHIP SIMULATION OF LARGE SCALE FRACTURE UNIVERSITY OF LUXEMBOURG (variational theory)

Dear All, Please see the attachment. We are looking only for an MSc student intern who is enrolled in a Higher Education Institution (in the European Union). The topic is the variational theory of fracture for microchip manufacturing. Connections to a relevant company in France are possible. Please see also, in the attachment, our 2014 Computational Mechanics Lab Report and our best wishes for 2015. Regards, Stéphane and the team. Best wishes for 2015: http://hdl.handle.net/10993/19425

Alejandro Mota's picture

Call for Abstracts: USNCCM13 Minisymposium 414 on Recent Advances in Mesh Adaptivity for Inelasticity, Damage, Crack Propagation and Failure.

In this minisymposium we seek to highlight challenging problems in computational solid mechanics that require mesh adaptation methods for their solution. We focus on the finite element method and works that address large deformations and the accompanying inelasticity, damage, crack propagation and failure. Discussion will center on Lagrangian descriptions and determining the necessary computational components to resolve, preserve, and evolve the fields that govern these processes. Prototypical material systems may include, but are not limited to, ductile metals and biomaterials.

ESIS's picture

Discussion of fracture paper #9 - Crack tip modelling

Dear Reader, 

I recently took over as the ESIS blog editor. Being the second in this baton relay, I will do my best to live up to the good reader expectations that has been established by my precursor, who is also one of the instigators of the blog, Wolfgang Brock. 

Ji Wang's picture

Visiting position on fracture mechanics

A colleague of mine wants to find a visiting position on research of fracture mechanics of metals.  His visit is supported by a grant from his institution and he is interested in working with someone on fracture mechanics of metal materials.  Please drop me a line and I shall help you connected.  

ahmedettaf's picture

Call for Abstracts; EMI 2015 Stanford

Dear colleagues,

We cordially invite you to submit your contributions to the following minisymposium: Multiscale Modeling and Simulation of Fracture and Fragmentation Processes taking place as part of the Engineering Mechanics Institute conference (JUne 16-19, 2015) at Stanford.

Best Regards,

Ahmed Elbanna*, University of Illinois at Urbana Champaign, USA
Glaucio Paulino, University of Illinois at Urbana Champaign, USA

MS 54: Multiscale Modeling and Simulation of Fracture and Fragmentation Processes

Crack Propagation in Bamboo's Hierarchical Cellular Structure

Bamboo, as a natural hierarchical cellular material, exhibits remarkable mechanical properties including excellent flexibility and fracture toughness. As far as bamboo as a functionally graded bio-composite is concerned, the interactions of different constituents (bamboo fibers; parenchyma cells; and vessels.) alongside their corresponding interfacial areas with a developed crack should be of high significance.

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