Blog posts

Nanobrücken-Dresden Nanomechanical Testing Workshop

Submitted by Oden Warren on Mon, 01/28/2013 - 21:47

Problem in linking Abaqus with Fortran

Submitted by shzangeneh on Mon, 01/28/2013 - 14:19

Hello everyone, I know it is a very common and ordinary question in writing usersubroutine but i have been trying to link Abaqus with Fortran based on every steps mentioned by some persons in this site, and i typed "abaqus verify -user_std" and the following is the result:

ALE adaptive meshing in abaqus used for modeling crack propagation

Submitted by A.Brick Chaouche on Sun, 01/27/2013 - 19:29

research

Good mourning, i have been asking a question about Abaqus capabilities to model crack propagation using an adaptive remeshing technique on abaqus, i know it is possible to use what it is called ALE adaptive meshing on abaqus standard/explicit, is it possible to use this option to model a crack propagation in materials and structures, it is well know that during a monotonic crack propagation, each length of the crack correspond a level of load, and to evaluate the following parameters such as SIF and G, we have to mesh a circular region centred on the crack tip, so we have to remesh the Geom

New Applications of Small-Scale Mechanical Testing: Half Day Tutorial at TMS 2013 Annual Meeting in San Antonio

Submitted by Dan Gianola on Sat, 01/26/2013 - 18:01

Half-day Tutorial at 2013 TMS in San Antonio

New Applications of Small-Scale Mechanical Testing

The tutorial will start at 1pm Sunday, March 3rd and will discuss topics including:

• Nanoindentation Techniques

• Fatigue of thin films

• Testing at Elevated Temperatures

• Chemical and Environmental Effects

Atomistic simulations of the interactions of hydrogen with dislocations in fcc metals

Submitted by Jaafar El-Awady on Sat, 01/26/2013 - 17:46

research

molecular dynamics

research paper

hydrogen embrittlement

dislocation cross-slip

stacking fault energy

Atomistic simulations of the interactions of hydrogen with dislocations in fcc metals

Yizhe Tang and Jaafar A. El-Awady

Phys. Rev. B 86, 174102 (2012)

Pre-straining effects on the power-law scaling of size-dependent strengthening in Ni single crystals

Submitted by Jaafar El-Awady on Sat, 01/26/2013 - 17:30

research

Plasticity

research paper

discrete dislocation dynamics

size-effects

nickel single crystal

Microscale testing

Pre-straining effects on the power-law scaling of size-dependent strengthening in Ni single crystals

Jaafar A. El-Awady, Michael D. Uchic, Paul A. Shade, Sang-Lan Kim, Satish I. Rao, Dennis M. Dimiduk, Christopher Woodward

Volume 68, Issues 3–4, February 2013, Pages 207–210

Are Finite Element Softwares Reliable ?

Submitted by mohammedlamine on Sat, 01/26/2013 - 11:50

research

Hello,

Some Finite Element Softwares use the Formulation of an Element and Jump to another one

by Merging Nodes : Quadrilateral to Triangular and Hexahedral to Tetrahedral without modifying

the Shape Functions.

This Method is Mathematically and Numericaly Forbidden because they use the Same Shape Functions

when Merging the Nodes for the Defined First Element (see Element Definition and after Mesh Process).

piezoelectric composite plate analysis using ansys

Submitted by chakry84 on Sat, 01/26/2013 - 09:52

research

Piezoelectric composites

which element should i consider for the piezoelectric composite plate analysis in ansys. the lay up consists of top and bottom piezo layers and middle graphite epoxy? i want to apply sinusoidal voltage on top piezo layer and i need noidal deflections, please help in doing