Hello there,

 I am currently trying to model a cold-formed steel beam experiment, where load is applied through displacement control. I thought using ABAQUS/Explicit and perform a quasi-static analysis would be a good idea.

 However, I have found an error I have not yet been able to overcome, and the results are not as I expected.

Here's the warning message:

A Special Issue of Engineering Fracture Mechanics

on

"Fracture and contact mechanics for interface problems", edited by Marco Paggi, Alberto Carpinteri and Peter Wriggers has just been published:

http://www.sciencedirect.com/science/journal/00137944/80

The selected articles were presented in a Minisymposium of the IV European Conference on Computational Mechanics, Paris, France, 2010.

List of contents

Dear all,

Herewith I want to announce the release of the frictional rolling contact model CONTACT version 12.1.

The main changes with respect to earlier versions of the program are as follows:

• Achieved a 100-fold speedup for solving larger normal contact problems.
• Improved the documentation of the viscoelastic part of CONTACT and
  provided an example of its use.
• Distinguished free and premium features in the software, the latter
  requiring a valid license file.

For the full release-notes or more information on the program refer to the website www.kalkersoftware.org.

Regards, Edwin

Dear friends,

I am using LS-Dyna for my master's thesis. I am now using 'LS-Prepost 3.1' for my post processing. I am doing explicit time integration based contact modelling. Is Prepost is the best post processing tool for such modelling or is there any other better software. Of course Prepost is free, but i wanna know if there is any other free and more powerful post processor.

Lamboram 

3 Post-Doc positions are available at the Department of Innovation Engineering at the University of Salento in Lecce, Italy. Funding is provided by the ERC Starting Researcher Grant project "INTERFACES - Mechanical Modeling of Interfaces in Advanced Materials and Structures". The topics are related to computational methods for interface modeling, isogeometric analysis, and mutlscale methods.

 The expected start date is February 2012 but early applications are highly encouraged. For additional information, please contact Laura De Lorenzis, Principal Investigator of INTERFACES (laura.delorenzis@unisalento.it).

Minisymposium on Fracture and Contact Mechanics for Interface Problems

Organizers: Marco Paggi, Alberto Carpinteri, Peter Wriggers

Contact person: Marco Paggi (marco.paggi@polito.it)

Dear all,

 At our website we maintain a list of upcoming conferences on contact mechanics and related fields, e.g. solid mechanics, tribology, railway vehicle dynamics, etc.

Which conferences and other events do you attend? Send me a note and I'll add them to the list.

Best wishes,

Edwin Vollebregt

Dear all,

On Monday January 30th to Wednesday February 1st, 2012, we will organise a
course on using the CONTACT software at Delft University of Technology
in the Netherlands.

The aims of the course are:

I am looking for any open source finite element codes that may be out there that deal with contact mechanics.

Third Asian Conference on Mechanics of Functional Materials and Structures (ACMFMS 2012)

Dear colleagues,

For people interesting in the simulation of solids mechanics with impact contact and friction, we are pleased to announce a new release of the Siconos software. The software is open-source, under GPL Licence and can be found at http://siconos.gforge.inria.fr/
It contains several time--stepping integrators for the nonsmooth dynamics and a large of solvers of the frictional contact problems that can be used separately. The numerical methods are mainly based on the book:  Numerical methods for nonsmooth dynamical systems: Appications in Mechanics and Electronics. Acary, V. and Brogliato, B. Springer Verlag. 2008

Dear Colleagues,

I would like to bring to your notice the mini-symposium on "Multi-scale modeling in contact mechanics" at the 11th US National Congress on Computational Mechanics (http://usnccm.org/). The conference will be held at Minneapolis, Minnesota from July 25-29, 2011.

Dear all,

Herewith I want to announc the release of CONTACT version 10.2.

The main changes with respect to earlier versions of the program are as follows:

Dear all,

 The programme for the course on "Contact mechanics with the CONTACT software", to be held October 28th-29th 2010 in Delft, the Netherlands, is now available via the registration form on our website www.kalkersoftware.org.

Best regards,

Edwin Vollebregt

Dear all,

 On Thursday 28th and Friday 29th of October 2010, we will organise a course on using the CONTACT software at Delft University of Technology in the Netherlands.

The aims of the course are:

The Graduate School MUSIC (Multiscale Methods for Interface Coupling) invites to its first Summer School on Multiscale and Multiphysics Modelling of Interfaces at Leibniz Universitaet Hannover, Germany, from 15 to 17 September 2010.

Dears,

 I'm doing some numerical analysis on penetration of infra-strucutres on soils (such as CPT tests) in ABAQUS/CAE .. what I'm recently challenging with is to overcome the element excessive distorsion due to large deformations... I have to apply contact constraints in my model...I would appreciate it if you share your expriences with me regarding the following tips:

1- Is it possible to use the ALE (Arbitrary Lagrangian-Eulerian) mesh adaptivity in ABAQUS/Standard? If yes, do you know of any accessible examples (.cae files) or references?

2- One strange thing is that I can run my model in ABAQUS/Standard with reports of excessive mesh distorion in 4-10 elements and still get the answer. How much I can rely on such results?

Dear all,

Herewith I would like to announce that we have decided to make our CONTACT software publicly available. You can obtain a free copy at the web-site www.kalkersoftware.org. We hope that the software is beneficial to you. We further hope that you give us helpful feedback in return.

Dear Colleague,
the IV European Conference on Computational Mechanics-ECCM 2010, Solids, Structures and Coupled Problems in Engineering, organized by ECCOMAS, will take place in Paris, France, May 16-21 2010 (see the Congress website http://www.eccm2010.org/  for more information).

Short-pitch rail corrugation: a possible resonance-free regime as a step forward to explain the “enigma”?  Wear, In Press, Accepted Manuscript, Available online 7 December 2008
L. Afferrante, M. Ciavarella

CMIS09

5th Contact Mechanics International Symposium

April 28-30, 2009, Chania, Greece

I recently encountered the research of Phil Attard and others, in which the contact problem is solved, relaxing the restrictions of the traditional contact models (Hertz, JKR, DMT) and solving based on a formulation where the governing equations are derived using finite-range surface forces and calculated numerically, self-consistently.

I have enjoyed learning about such models and believe they may have practical application in nanomechanics. However, I find my breadth of my knowledge challenged when it comes to understanding the model's derivation.

I am doing contact simulation of soft material. I want to change the default criterion for max penetration error, but can't seem to find how to do it. I tried contact controls relative and absolute penetration tolerances, hcrit but that did not affect the error criterion. Can someone help me please?

For those interested in a classical subject like contact mechanics, here are a couple of recent papers published in August.  One is an extension of the Greenwood Williamson theory of rough contact, and the other is a linear perturbation solution of the classical Carter rolling contact problem for a rolling cylinder, when the surface is corrugated and hence there are oscillations in both normal and tangential loads.