Blog posts

Questions about stresses distribution in pin-loaded orthotropic plates

Submitted by Jinxing.Huo on Thu, 10/09/2014 - 09:26

Dear all,

I am now reading a paper about the stress distribution in pin-loaded orthotropic plates.

The paper 'Contact stresses in pin-loaded orthotropic plates' is written by Prof. M.W. Hyer.

In this paper, the stresses on the boundary of the hole in the plate are given by a complex Fourier series with unknown coefficietns Ak. The unknown coefficients Ak's are determined by a system of algebraic equations: [C]*{A}={B}. A collocation procedure is needed to construct the square matrix [C].

Tenure-Track Faculty Position in the Department of Aeronautics and Astronautics Massachusetts Institute of Technology (MIT)

Submitted by Raul Radovitzky on Thu, 10/09/2014 - 00:20

job

Faculty Position

The Department of Aeronautics and Astronautics at MIT invites applications for a tenure-track faculty position with a start date of September 1, 2015 or thereafter. The department is conducting a search for exceptional candidates with a strong background in any discipline related to Aerospace Engineering, broadly defined. We are seeking highly qualified candidates with a commitment to research and education. Faculty duties include teaching at the graduate and undergraduate levels, advising students, and conducting research.

could someone tell what should I do to run Abaqus job in High Performance Computing (HPC) systems?

Submitted by M. Khorashad on Wed, 10/08/2014 - 14:18

High Performance Computing

Abaqus 6.14-1

CentOs 6.5

parallelization

I want to run a job file with Abaqus 6.14-1 Software in HPC system but we did not install Abaqus in our cluster before and I do not know how can I sure about the proper installation. I prefer to run Abaqus graphically but if it is not able, we can do it by .inp file.

the system is CentOs 6.5, 60 node that every node has 4 cpus and every cpu has 4 Gb RAM.I search in the internet but I can not find a step by step guide that explain the procedure of parallelization.

Damage model for soft polymer

Submitted by mahzanjohar on Wed, 10/08/2014 - 09:58

Hi all,

I'm working on modelling of adhesive joint using soft polymer adhesive types.

Can anyone suggest what are suitable damage mnodel for soft polymer.

I'm using Abaqus FE software version 6.12

Probing the intermediate states between rolling-up and wrinkling thin films

Submitted by Peter Cendula on Wed, 10/08/2014 - 09:27

thin film

carbon nanoscrolls

wrinkling

wrinkling instability

crack

xrd

Self-positioned nanomembranes such as rolled-up tubes and wrinkled thin films have been potential systems for a variety of applications and basic studies on elastic properties of nanometer-thick systems. Although there is a clear driving force towards elastic energy minimization in each system, the exploration of intermediate states where specific characteristics could be chosen by a slight modification of a processing parameter had not been experimentally realized.

In SPH method, does it need fracture criterion?

Submitted by guojunhang on Wed, 10/08/2014 - 05:29

software

SPH abaqus fracture

In abaqus , there is an example for SPH. It can be obtained by:

abaqus fetch job=ver_prc_projectileimpact.inp

There are two fracute criterion in this file.

But even both of them are removed, the simulation results are similar.

Why?

In SPH method, does it need fracture criterion?

Is anyone familiar with the use of yield strength in creep zone?

Submitted by naveen_bhel on Wed, 10/08/2014 - 03:14

I was going through some literature on AUSC steam turbine (operating temperature 700 deg C). In many of the papers i have seen that 400 MPa yield strength at operating temperature was used as material selection criteria for turbine rotor. At the same time some people are using Alloy 617 for same application, for which creep rupture is quite high (around 137MPa at 700 deg C) at operating temperature but yield strength is around 200 MPa.

Two Ph.D. positions available at University of Houston

Submitted by Roberto Ballarini on Tue, 10/07/2014 - 21:12

Two Ph.D. positions in the general area of mechanics are currently available in the Department of Civil and Environmental Engineering at University of Houston.

Applicants should possess an MS degree in civil, mechanical, or other related engineering field at the time of enrollment at University of Houston. A strong background in continuum mechanics is required.

Call for Abstracts; EMI 2015 Stanford

Submitted by swcranford on Tue, 10/07/2014 - 19:05

conference

nanocomposites

modeling

molecular heterostructures

Dear colleagues,

I invite you to submit an abstract to the following minisymposium: Modeling and Characterization of Nanocomposites and Molecular Heterostructures as part of the Engineering Mechanics Institute annual conference at Stanford University.

See: http://www.emi2015.info

Best Regards,

Steven Cranford

Northeastern University