Blog posts

Postdoctoral Appointee – Computational Mechanics - Sandia National Laboratories – Livermore, CA

Submitted by Alejandro Mota on Tue, 01/13/2015 - 21:42

About Sandia

Sandia National Laboratories is the nation's premier science and engineering lab for national security and technology innovation. We are a world-class team of scientists, engineers, technologists, post docs, and visiting researchers all focused on cutting-edge technology, ranging from homeland defense, global security, biotechnology, and environmental preservation to energy and combustion research, computer security, and nuclear defense.

To learn more, visit http://www.sandia.gov.

Friction modeling LAMMPS

Submitted by Dincoz on Tue, 01/13/2015 - 20:45

Hi All,

Is there any one working on modelling of friction using LAMMPS to discuss an issues?

Best

Add XFEM crack to an already deformed model

Submitted by thestock on Tue, 01/13/2015 - 20:39

research

I hope this can be done and I want to say thank you in advance for any feedback.

I have already completed a simulation of a plate with a hole and pulling a mandrel through the hole to expand it and create a plastically deformed hole.

Now, I would like to take this plastically deformed hole, add an XFEM crack and vertically pull to simulate a tension test.

Can this be done?

Issues:
Tried Predefined Field - Stress:

Unconditionally stable explicit method

Submitted by Pooyan Broumand on Tue, 01/13/2015 - 17:22

Hi every one,

I have recently seen some papers that claim to present an unconditionally stable explicit time integration method.

Is it (mathematically) possible to do such a thing?! I though that all explicit methods are atmost conditionally stable.

Science Magazine Article

Submitted by tmelsayed on Tue, 01/13/2015 - 17:03

research

http://news.sciencemag.org/education/2015/01/outlier-outlaw-outcast-imp…

MSC.Marc Subroutine and visual fortran compiler

Submitted by ap2008 on Tue, 01/13/2015 - 06:56

Program Exception - access violation

Summer Intern - closed

Submitted by nick.song8 on Mon, 01/12/2015 - 13:37

job

Thanks for your interest!

A constraint-free phase field model for ferromagnetic domain evolution

Submitted by Min Yi on Mon, 01/12/2015 - 10:10

research

A continuum constraint-free phase ﬁeld model is proposed to simulate the magnetic domain evolution in ferromagnetic materials. The model takes the polar and azimuthal angles (ϑ1, ϑ2), instead of the magnetization unit vector m(m1,m2,m3), as the order parameters. In this way, the constraint on the magnetization magnitude can be exactly satisﬁed automatically, and no special numerical treatment on the phase ﬁeld evolution is needed.

Ansys workbench modelling problem

Submitted by Sisimk65 on Sun, 01/11/2015 - 08:40

I'm a mechanical engineering working on modelling composite in ansys workbench. I have a problem in modelling a composite plate with ACP. To do this, i created a static structural and modeled a surface body of a plate and after applying loads and boundaries, i attached to it an ACP(Pre). The procedures has been done like Tutorial 1 of ACP of ansys workbench 15.