User login

Navigation

You are here

blogs

nonlocal elastcity

volinsky's picture

Summer Job for Students in Europe: International US-European Joint Study of X-Ray Optics Thermomechanical Stability and Control

Summer Job for Students in Europe: NSF-sponsored International Research Experience for Students (IRES)
International US-European Joint Study of X-Ray Optics Thermomechanical Stability and Control

 

Bo Liu's picture

Exact solutions for the free in-plane vibrations of rectangular plates

All classical boundary conditions including two distinct types of simple support boundary conditions are formulated by using the Rayleigh quotient variational principle for rectangular plates undergoing inplane free vibrations. The direct separation of variables is employed to obtain the exact solutions for all possible cases. It is shown that the exact solutions of natural frequencies and mode shapes can be obtained when at least two opposite plate edges have either type of the simply-supported conditions, and some of the exact solutions were not available before.

tuhinsinha.25's picture

Determining multiple contact pairs in Abaqus explicit

Hello,

I want to know that is there a novel way of defining several two dimensional contact pairs in Abaqus/Explicit. I know that abaqus has the capability of defining a general contact but it is restricted only to Abaqus standard and 3D Abaqus explicit problems. 

I have a 2D plane strain problem where I have to specify more than 1000 contact pairs in the assembly between similar instances of the same part. Is there a fortran subroutine that could be used to determine so many contact pairs?

 

Thanks,

Tuhin

Xi Chen's picture

ASME IMECE2010 Symposium on Multifunctional Material Systems

The ASME Multifunctional Materials Technical Committee of the Materials Division is organizing a symposium on Multifunctional Material Systems at IMECE2010 to be held in Vancouver, Canada, during Nov. 12-18, 2010.

Tentative abstract submission deadline: March 1, 2010

getting material property in ABAQUS

Hi, everyone,
Now I have a problem with getting the material property at each increment from ABAQUS. I have written a USDFLD subroutine to change the material properties at each increment. but I can't monitor the variation. do you have any idea how it is possible?

Thanks

Miad

Roberto Ballarini's picture

Cohesive Zone Models are elasticity

I have always, and I believe correctly, considered cohesize/bridging models linear elasticity. This is because whether we apply them to holes or cracks, we are solving the equations of ELASTICITY, with nonlinear boundary conditions along the part(s) of the crack along which a traction-separation law is applied. So the material model is totally elastic. All we did was to augment the elasticity theory with an ad hoc physical condition (inspired by experiments such as Dugdale).

UMAT to VUMAT

 

Hello ,

 

I am a relatively new user to ABAQUS , and i am trying to figure out a way ( if there exists ) to convert a model defined in ABAQUS / Standard to Explicit for conducting impact testing.

 Now i have figured out most of the model apart from the material defination. The previous model has a User defined material , and i need to convert it to a VUMAT.

 

Is there any way to perfrom this operation ? Or do i have to  just re-code the enitre material , as there are just too many differences in the way both are defined ?

Von mises and Tresca stress criterion

Difference bewteen Von mises and Tresca stress citerion. Any good references?

Thank you

 

Pandi.Pitchai's picture

Bridge

I am new for using abaqus , can anybody tell me how to apply the moving load on the bridge by using abaqus

Lecturer (Assistant Professor) in Geotechnics position available at University of Edinburgh, Scotland

The School of Engineering at University of Edinburgh is seeking to appoint a lecturer with demonstrated research excellence and the capacity to develop academic leadership in his/her
research area. Applications from candidates with a vision for interfacing
between the powerful science and engineering base of the College and industrial
needs, with strengths in interdisciplinary research, theoretical concept
development, and/or experimental research within the broad remit of Engineering
are encouraged to apply. Those with a research interest in Geotechnical
Engineering, Materials, Geo-Environmental Applications or Structures are

How to get the integration reaction force of the indenter in Abaqus/standard

Hi, everyone,
Now I have a problem with indentation simulation. With Abaqus/standard, I set the indenter as deformable solid, and control the indentation depth of the indenter to monitor the reaction force of the indenter. But it seems the integration operator only can be used under abaqus/explicit, how can I get the integration reaction force of the indenter under Abaqus/standard.
Thank you, any help will be appreciated.

Memory problem COMSOL

I am studying sonar detector of large under water systems.
I m using a simple test case in COMSOL at the moment but the memory size
of my problem is too big for my PC.
I tried to reduce the mesh but I had convergence problems
can you please help me indicating
which mesh settings I should choose?

Thanks

 

Which package suits for fatigue analysis?

I would like to simulate fatigue analysis to know the fatigue life, can any one guide me to do the same. and please specify which package suits for the same.

Thanks

Balaa

Ravi-Chandar's picture

Post-Doctoral Position at the University of Texas at Austin

The Research Center for Mechanics of Solids, Structures and Materials at the University of Texas at Austin invites applications for two open positions as Post-doctoral Fellow. The specific projects involve (i) the characterization of the constitutive and failure behavior of structural materials (aluminum alloys, steels, titanium alloys and other selected materials) under quasi-static and dynamic conditions, and (ii) the characterizaation and modeling of the dynamic response of metal-matrix composites. These positions are available immediately.

Matlab - ANSYS interface

Hi 

I am woking on an optimization problem. In this optimization problem I want to use Matlab and ANSYS.  In which MATLAB  initiating the optimization problem, and  send input values to ANSYS, then ANSYS find some results and send it to Matlab...then continue the optimization process.

Can any one help me to do these comunications between Matlab and ANSYS?

 

asit_rathod1's picture

ansys Creep Analysis

Hello

All As i am Pg Student I want To Know How i can MAke Creep Analysis in Ansys?..is there any books or any website which any body know?..

Please do Needful

Regards

Asit Rathod

goriely's picture

Postdoctoral position at the University of Oxford: Hierarchical scaling, structure, and mechanics of filamentary assemblies

A two-year postdoctoral position is available at the Oxford Centre for Collaborative Applied Mathematics (OCCAM) to work with myself on the mechanical and geometrical analysis of filament assemblies with application to biological systems. Details and Further Particulars can be found at

https://www.maths.ox.ac.uk/node/11748

Cold welding of ultrathin gold nanowires

Nature Nanotechnology, Feb. 14, 2010. DOI: 10.1038/NNANO.2010.4, Yang Lu, Jian Yu Huang, Chao Wang, Shouheng Sun and Jun Lou

NANOVEA's picture

Surface Finish of Plastic Tubing With 3D Profilometry

The appearance and performance of a plastic component is highly contributed to surface finish. Monitoring surface finish for the intended parameters is crucial to the success of a plastic component both molded and machined. Insuring surface finish allows for the vast uses of plastic components and the environments they are found, ranging from medical to consumer goods, to electronics and cosmetics. For every use of a plastic component a specific surface finish parameter can be set to control its appearance and performance during environmental conditions.

Indentation Stress and Displacement Fields

Pages

Subscribe to RSS - blogs

Recent comments

More comments

Syndicate

Subscribe to Syndicate