Blog posts

23rd International Workshop on Computational Mechanics of Materials (Singapore, Oct 2 - 5, 2013)

Submitted by Adrian S. J. Koh on Tue, 04/30/2013 - 02:17

Dear Colleagues, Co-Workers and Friends,

It gives me great pleasure to announce that the 23rd International Workshop on Computational Mechanics of Materials (IWCMM23) will take place in Singapore, Oct 2-5, 2013.

XFEM fatigue crack length

Submitted by paulamil on Mon, 04/29/2013 - 20:58

research

XFEM fatigue crack propagation

direct cyclic approach

Hi all,

For my research I am using Abaqus 6.12 combined with XFEM crack propagation and direct cyclic analysis to asses the failure of bridge connections due to high cycle fatigue. Once propagation of an initially defined crack occurs I would like to plot the crack length at specific number of cycles. Is there an output request that can be specified that will measure that length of the crack as it moves through the simulation?

Thanks for any advice you can offer.

Paula

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,