Blog posts

Principal compression and tension stress and strain plots

Submitted by maverick_269 on Mon, 04/29/2013 - 19:50

Principal compression and tension stress and strain plots

Hi,

I have a question with regards to the various stress-strain plots that I see from FEM softwares.

They have plotted principal compression and tension stress plots and strain plots for a 2d geomterical analysis from a FE software (MARC). They have used a finite strain theory. So does this mean that the principal compression and tension values for the various elements just correspond to the minimum and maximum values of a Cauchy green tensor or some other finite tensor like first or second piola kirchoff stress tensor??

Abaqus Simulation Run Time

Submitted by mhdiab on Mon, 04/29/2013 - 18:30

Hey all,

I am running a wave propagation simulation on Abaqus that requires a large number of element and a very small time step(increment). I am using the Dynamic Implicit analysis type. When I run the simulation ,it take a very long time. I even tried using a faster computer(32 GB of RAM) but that did not reduce the time by much! Is there anything I can do to reduce the time it take that simulation to complete?

2013 Melosh Medalist

Submitted by John E. Dolbow on Mon, 04/29/2013 - 17:42

research

melosh competition

Ju Liu, from the University of Texas at Austin, is the 2013 Melosh Medalist for his paper "A Thermodynamically Consistent Algorithm for Liquid-Vapor Phase Transitions in Complex Geometries". Please join me in congratulating Ju!

Spline function in ADAMS

Submitted by reddy1ay on Mon, 04/29/2013 - 05:02

research

Hai, i am doing the robot silmulation in ADAMS View,now i struck in defining the math function to simulate the robot in 6 DOF/ workspace,, please tell me how to build spline function for different joints @ simultaneus.

Tunable electrical and mechanical responses of PDMS and polypyrrole nanowire composites

Submitted by duping812 on Sun, 04/28/2013 - 18:06

Journal of Physics D: Applied Physics

Ping Du, Xi Lin, Xin Zhang

Volume 46, Number 19, Page 195303

doi:10.1088/0022-3727/46/19/195303

A generic experimental procedure is presented in this work to enhance
the electrical responses of polydimethylsiloxane (PDMS) through
incorporation of conducting polymer nanowires, while maintaining the
desirable mechanical flexibility of PDMS. The conducting polypyrrole

Investigation of Cellular Contraction Forces in the Frequency Domain Using a PDMS Micropillar-Based Force Transducer

Submitted by duping812 on Sun, 04/28/2013 - 18:04

Journal of Microelectromechanical Systems

Ping Du; Chen Cheng; Hongbing Lu; Xin Zhang

Volume: 22, Issue: 1, Page(s): 44 - 53

DOI: 10.1109/JMEMS.2012.2213070

Mesh and Increment Size-Lamb Wave Propagation Simulation

Submitted by mhdiab on Sat, 04/27/2013 - 23:28

Hey all,

I am simulating Lamb wave propagation in a plate and was wondering if anyone knows where I can find the criteria to chose the mesh size and the time increment size. Thank you.

Regards,

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

Submitted by Alejandro Mota on Fri, 04/26/2013 - 23:28

NUMISHEET 2014: Extension to June 1st for Abstracts

Submitted by Yannis Korkolis on Fri, 04/26/2013 - 22:41

conference

Dear Colleagues,

NUMISHEET 2014 (http://www.numisheet2014.org) will be held at “Hilton on the Park” in Melbourne,
Australia January 6-10, 2014. On behalf of this conference, we would like to invite you to submit an
abstract to the following mini-symposium:

New and established standard test methods for sheet metals, and their
"off-label use" in research

PhD/Post-Doc Position(s) at University of Strathclyde, Glasgow

Submitted by Erkan Oterkus on Fri, 04/26/2013 - 20:55

job

computational mechanics

Dear All,

We are planning to offer several PhD/Post-Doc positions at University of Strathclyde, Glasgow. The positions are expected to be in the area of computational mechanics including finite element analysis and panel methods. If you are interested, please send your current CV to oterkus [at] gmail.com .

Best Regards,

Dr. Erkan Oterkus

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