Blog posts

A PhD student position on Computational Structural Mechanics in Catholic University of America.

Submitted by chanseok on Wed, 11/20/2013 - 18:07

A PhD student position on Computational Structural Mechanics is available in Department of Civil Engineering, The Catholic University of America, Washington, DC

from Fall 2014.

PhD Research Topics: numerical modeling in one of the following areas:

-Dynamic soil-structure-interaction (SSI) analysis,

- Inverse scattering problems for non-destructive evaluation (NDE) of structures,

- Optimization of wave sources for elastic wave-based enhanced oil recovery (EOR),

Rotational Abaqus Direct Cyclic Boundary Condition

Submitted by paulamil on Wed, 11/20/2013 - 17:04

research

ABAQUS

Direct Cyclic

Greetings,

I am attempting to model the rotation of a cylindrical bar using Abaqus 6.12 coupled with the direct cylic approach. In my model I have one end of the beam fixed while the other has a kinematic coupling constraint to a reference point that has an applied rotation of 0.1 rad.

XFEM for rock in ABAQUS

Submitted by kianoosh on Wed, 11/20/2013 - 14:26

software

XFEM in porous media (rock)

I tried to simulating crack propagation with XFEM method in porous media (rock), but got error code 144 (like this error" the executable C:\SIMULIA\Abaqus\6.9-1\exec\standard.exe aborted with system error code 144. Please check the .dat, .msg, and .sta files for error messages if the files exist. If there are no error messages and you cannot resolve the problem, please run the command" )

I think abaqus 6.11 can't simulating crock propagation with XFEM method in porous media , is it true?

Minisymposium on Nano and Biomechanics at 2014 USNCTAM

Submitted by Harold S. Park on Wed, 11/20/2013 - 13:42

Dear Mechanics Colleagues:

A pleasant reminder that we invite you to submit an abstract to a minisymposium on "Nano and Bio
Mechanics" for the 2014 USNCTAM, June 15-20, 2014, to be held at
Michigan State University. This minisymposium will focus on the
development and application of

both experimental techniques and computational models and methods to

problems of interest in the fields of nano and bio mechanics. Topics of

interest will include, but are not limited to:

Ask a question about ABAQUS

Submitted by hadi_salavati on Wed, 11/20/2013 - 10:38

software

Hi Dear All

I have simulated a beam weakend by blunt V-notch. I want to define a set around the notch tip utilizing my desired points borrowed from the computer programming. How could I define this set?

I really apprciate if any one could help me.

High-temperature tensile behavior of freestanding Au thin films

Submitted by Gi-Dong Sim on Wed, 11/20/2013 - 06:18

research

thin films

Grain Boundary Sliding

creep

Vlassak group

In situ tension test

High-temperature deformation

In this paper, the mechanical behavior of freestanding thin sputter-deposited films of Au is studied at temperatures up to 340°C using tensile testing. Films tested at elevated temperatures exhibit a significant decrease in flow stress and stiffness. Furthermore the flow stress decreases with decreasing film thickness, contravening the usual notion that “smaller is stronger”. This behavior is attributed mainly to diffusion-facilitated grain boundary sliding.

This paper has been accepted by Scripta Materialia.

Opening of PhD student position available at University of Arkansas at Little Rock

Submitted by Guoliang Huang on Tue, 11/19/2013 - 21:10

job

composite metamaterials

The group of Advanced Materials and Dynamics Lab at the University of Arkansas at Little Rock has one opening for a Ph.D. student in the field of mechanics of materials. The appointment is starting on May 2014 or August 2014.

Robust Stability at the Swallowtail Singularity

Submitted by Oleg Kirillov on Tue, 11/19/2013 - 18:34

Consider the set of monic fourth-order real polynomials transformed so that the constant term is one. In the three-dimensional space of the coefficients describing this set, the domain of asymptotic stability is bounded by a surface with the Whitney umbrella singularity. The maximum of the real parts of the roots of these polynomials is globally minimized at the Swallowtail singular point of the discriminant surface of the set corresponding to a negative real root of multiplicity four.

Scanning AC calorimetry and its combination with in-situ X-ray Diffraction technique

Submitted by xfkechao on Tue, 11/19/2013 - 18:20

research

Calorimetry is a widely used technique to study the thermal properties of materials including heat capacity, temperature and enthalpy of transformation/chemical reaction. In a typical calorimetry mesurement, a controlled power is supplied to the material to heat it up, and the resulting temperature as a function of time is recorded.