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Progressive Element deletion during laser meltingusing ABAQUS

Submitted by ssakhtar on

Dear friends

I am using ABAQUS for thermal analysis using laser moving heat source. I have successfully implemented DFLUX for thermal and subsequent stress analyses. My question is: How can I progressively delete (during moving heat source) those elements in transient thermal analysis whose temperature is above melting temperature? My intention is to analyse  their effect on stress fields in  subsequent coupled stress analysis.

 Regards  

Dr. S. Sohail Akhtar

Good News for US Graduates/post docs: Travel Awards for student attendance in MS 5041 @ WCCM 2010 Sydney, Aus. July 19-23, 2010

Submitted by Qingda Yang on
conference
Modeling and Testing of ultra-high temperature materials/structures

The newly founded National Hypersonic Science Center -- Materials and Structures is to organize a minisymposium in this year's WCCM (2010) on VirtualTesting for Hybrid Hierarchical Materials for High TemperatureApplications. Please see the attachment for paper solicitation. We will greatly appreciate your consideration of submitting a paper to our symposium (minisymposium No. MS5041) 

Journal Club January 2010: MEMS-based Instrumentation for Experimental Nanomechanics

Submitted by Yong Zhu on
research
MEMS
Journal Club Forum
experimental nanomechanics

Welcome to the January 2010 issue! In the issue of May 2007 , Prof. Xiaodong Li outlined the existing experimental methods for mechanical characterization of 1D nanostructures. In this issue, I will discuss along the same line but focus on experimental methods enabled by microelectromechanical systems (MEMS).



Trends in Computational Nanomechanics-Transcending Length and Time Scales

Submitted by td on
research
nanomechanics
multiscale
I am happy to announce the forthcoming volume titled 
Trends in Computational Nanomechanics - Transcending Length and Time Scales 
Springer Series: Challenges and Advances in Computational Chemistry and Physics, Vol. 9
Dumitrica, Traian (Ed.)
2010, XVIII, 620 p., Hardcover 
ISBN: 978-1-4020-9784-3 

van der Waals interaction controls orientations of single-walled carbon nanotubes on quartz during growth

Submitted by Jianliang Xiao on
research
Carbon nanotube
growth
alignment
van der Waals
quartz
Single-walled carbon nanotubes (SWNTs) possess extraordinary electrical and mechanical properties, with many possible applications in electronics and materials science. Dense, horizonally aligned arrays of linearly configured SWNTs represent perhaps the most attractive and scalable way to implement this class of nanomaterial in practical systems. Recent work shows that templated growth of tubes on certain crystalline substrates (e.g. quartz) yields arrays with the necessary levels of perfection, as demonstrated by the formation of devices and full systems on quartz.
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