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XFEM for rock in ABAQUS

Submitted by kianoosh on

Hi


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

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:

High-temperature tensile behavior of freestanding Au thin films

Submitted by Gi-Dong Sim on

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

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

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

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.

Postdoctoral research positions on 3D printing in Singapore

Submitted by Kun Zhou on

Enthusiastic and highly motivated postdoctoral scientists are sought to work on 3D printing/additive manufacturing at Singapore.  

The candidates should have rich experiences in relevant research areas, good publication records, and excellent writing skills.

Preference will be given to those with experience in (1) molecular dynamics modeling or (2) manufacturing. The contract will be one year and renewable subject to performance. 

The Dept of Eng Sci at Uppsala University is looking for a project worker in structural modeling of the 17th century Vasa Ship

Submitted by syvoney on

The Swedish
17th century Vasa ship is unique in its kind and of high cultural
and historical interest. Therefore, interdisciplinary research teams are
constantly busy to keep the slowly degrading and deforming warship in good
geometrical shape. Initiated in 2012, the latest research project aims to
investigate creep in the Vasa ship and to develop a new support system for
improved dimensional stability. For this purpose a finite element model will be
created to assess the effect of varying geometrical parameters and material
properties. One of the key aspects is the influence of the joints of the ship