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buckling analysis of pipeline under external pressure

Submitted by Alice Wang on
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The buckling pressure of a uniform pipe under external pressure, can be evaluted by the linear analtical equation:

 

 

 I use abaqus to simulate this problem. I tried for different pipe length and boundray conditions, the buckling pressure varies a lot, and even larger than the linear analytical results. Does anyone know how long do I need to build for the model and how to set up the boundray conditions. Many thanks. 

 

 

 

 

Discussion of fracture paper #7 - Configurational force approach

Submitted by ESIS on

K. Özenç, M. Kaliske, G. Lin, G. Bhashyam: Evaluation of energy contributions in elasto-plastic fracture: A review of the configurational force approach, Engineering Fracture Mechanics, 2014, Vol. 115, pp. 137-153.

To the discussion

Finalists for the 2014 Melosh Competition

Submitted by John E. Dolbow on

Seven finalists have been identified for the 2014 Melosh Competition to be held Friday, April 25, at Duke University.  The finalists and their current institutions are:

Amin Aghaei, Carnegie Mellon University

Sourish Chakravarty, SUNY Buffalo

Gina El Jannoun, MINES ParisTech

Mhadi Moghadam, UCSD

Phani Motamarri, University of Michigan

Nathan Roberts, University of Texas

Timothy Truster, University of Tennessee

Please join me in congratulating the finalists!!! 

Evading the strength-ductility trade-off dilemma in steel through gradient hierarchical nanotwins

Submitted by Yujie Wei on

It is a long-standing goal in metallurgy to enhance the strength of materials without sacrificing ductility. In a recent article in Nature Communications, we reported an effective way to evade the strength-ductility trade-off dilemma in twin-induced plasticity steel.