research

review paper: The role of adhesion in contact mechanics

Submitted by Mike Ciavarella on Wed, 02/06/2019 - 14:27

research

adhesion

Adhesion and fracture; adhesion; contact mechanics; friction;

Journal of The Royal Society Interface 16(151), February 2019. DOI: 10.1098/rsif.2018.0738

Michele Ciavarella Junki Joe Junki Joe Antonio Papangelo James Richard Barber

The role of adhesion in contact mechanics

Submitted by Antonio Papangelo on Wed, 02/06/2019 - 10:45

research

Adhesion and fracture; adhesion; contact mechanics; friction;

Just published in Journal of the Royal Society Interface

Ciavarella M, Joe J, Papangelo A, Barber JR. 2019 The role of adhesion in contact mechanics. J. R. Soc. Interface 16: 20180738. http://dx.doi.org/10.1098/rsif.2018.0738

PhD positions in Controls are available at George Mason University

Submitted by rbighami on Tue, 02/05/2019 - 05:15

research

Brain-computer interface

digital healthcare

controls

machine learning

<p>Applications are invited for PhD positions at the Algorithms in Medicine and Neuro-Technology Lab (AIMAN Lab) in the Department of Mechanical Engineering at George Mason University, Fairfax, VA. "Research" The AIMAN Lab pursues fundamental breakthroughs in biomedical cyber-physical systems.

Postdoctoral position in computational damage geomechanics

Submitted by daniel.pino_munoz on Thu, 01/31/2019 - 16:20

research

postdoctoral position

geomechanics

Earthquakes

CDM continuum damage mechanics

fracture mechanics

A postdoctoral position in the field of Computational damage geomechanics is open at Université Côte d'Azur.

This project is the result of a collaboration between Geoazur at Université de Nice, the Centre for Material Forming (CEMEF) at Mines ParisTech and the Laboratoire Jean-Alexandre Dieudonné (LJAD) at Université de Nice.

Journal Club for February 2019: Stretchable Chemical Templates: New Tools for the Fabrication of Polymer Microstructures and Actuators

Submitted by smorin on Thu, 01/31/2019 - 15:24

Introduction:

XFEM enrichment quasi-orthogonalisation for condition control

Submitted by Stephane Bordas on Fri, 01/25/2019 - 09:40

research

<p><a href="https://www.sciencedirect.com/science/article/pii/S0045782518303931/pdf…;

Question about implicit creep subroutine in Abaqus

Submitted by Oskar Xavier on Wed, 01/23/2019 - 02:04

The implicit implementation of creep in abaqus requires dh/d(\delta \epsilon_c ) as Jacobian in Newton-Raphson's iteration. The derivative can be expanded as shown in the figure attached. The term dh/dq, the one underlined by a green stroke, is expected to be provided by users through specifying DECRA, whereas the term dq/d(\delta \epsilon), underlined by a red one, is confusing me. It seems that that term is computed by Abaqus but I have no idea how it is done. The same question applies to the last derivative on the right hand side.

Thank you very much !

A tutorial on Bayesian inference in mechanics

Submitted by Stephane Bordas on Mon, 01/21/2019 - 10:51

research

http://hdl.handle.net/10993/37698

Hussein Rappel's new paper is out.

Cohesive element modelling problem in ABAQUS

Submitted by hermatician on Mon, 01/21/2019 - 10:11

abaqus fracture toughness modelling

Dear All,

I am modelling a 3 point bend specimen with Cohesive elements tied to the upper and lower halves of the specimen in 2d.

The problem is that the CZ elements perform properly only for a combination of element sizes, i.e. a combination of element size of structure and CZ elements, for instance in my case the structure/specimen element size is 0.2mm and CZ is 0.001 or 0.002. For any other combination the adjacent elements bend as shown in the attached image.

I will be glad if someone could explain this behaviour and the solution.