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ANSYS Modelling 3D Surface-to-surface Contact, need help

Submitted by pday on
Forums
Contact Mechanics Forum
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large deformation
contact
3D

I am fairly new to ANSYS and have been trying to model the interaction between glass micro-spheres and silicone polymer micro-structures for my dissertation research.  I've been working through the online manual, but have been getting very odd results when running the simulation.  Any help at all would be appreciated.  The summary of my problem is as follows:

 Modelling:

Thermo-mechanical Modeling of Friction Welding

Submitted by ADINA Support on
research
contact
welding
thermo-mechanical coupling
thermo-elasto-plastic

We present an application of ADINA in the thermo-mechanical analysis of friction welding. Please see: 



http://www.adina.com/newsgH61.shtml



You can find many other examples of applications of ADINA in the analysis of multiphysics problems here:   



http://www.adina.com/multiphysics.shtml

Frictional Coulomb model in Abaqus

Submitted by Nicholas Fantuzzi on
ABAQUS
friction
contact
interaction
model
frictional
coulomb
tangential
penalty

Hello everybody,

I'm trying to add friction in my model.Now I have a body that is simply supported in a direction (vertical) and free to move in another one (horizontal). I want to use Coulomb friction in the horizontal direction in order to reduce displacements in that direction.

I read Abaqus User's Manual vol5 30.1.5 (frictional behavior) and I followed commands written there, but I think that works only with multiple bodies and not with a single body. I'm using Abaqus 6.7-1.

Could Someone help me?

Many many many thanks

Nicholas

Problem of contact data in ABAQUS 6.8 version

Submitted by jin haeng Lee on
research
ABAQUS
contact

Hi.

I have an issue related to recent change in ABAQUS new version.

 I've recently found a problem related to cotact data in ABAQUS new version, 6.8. I use fil files, but I've heard from a Simulia engineer that data file also has the same problem (I have not checked it out yet.)

Surface Energies? Continuum Molecular Dynamics?

Submitted by Mike Graham on
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molecular dynamics
contact
contact mechanics
continuum molecular dynamics
Lennard-Jones
van der Waals force

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.

Post-doc position on Multiscale Simulations of Cell Contact and Adhesion

Submitted by shaofanli on
job
adhesion
computational mechanics
contact

A post-doc position on multiscale simulation of cell contact and adhesion shall be available this coming Fall at UC Berkeley. We are seeking for a person who has experience and background on finite element computations, especially in cell contact/adhesion modeling and simulation or finite deformation simulations.

Anyone who is interested in the position please send an email, resume, and reference to li [at] ce.berkeley.edu (li[at]ce[dot]berkeley[dot]edu)

difficulties CONTACT problem with plasticity using ABAQUS FEA code.

Submitted by lazghabt on
research
ABAQUS
contact
FEA
CShear

Hello everyone:

1.  I have built a FEM model 2D plane strain using ABAQUS/Standard (CPE4R) elements,

2. I am  modeling the contact between a cylinder and a plate in 2D.

3. The Cylinder material is given is ELASTIC ISOTROPIC material with no plasticit E=310 GPa

4.  The plate is with a Ramberg-Osgood plasticity with a Young's modulus E=210 GPa.

5. The mesh at the the contact point is VERY refined element characteristic length is about 1 micron. (My model units are  (mm,N,sec)).

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