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decomposition of fourth-order tensor

Submitted by qianjiangu on
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Is it possible to decompose a 4th-order tensor Dijkl with minor symmetry (i.e., Dijkl=Djikl=Dijlk) into Dijkl=AijBkl? And does Dijkl have its polar decomposition form like a 2-order tensor ? Welcome to discuss this question.

Ph.D. Candidate Position at the University of Waterloo

Submitted by Ting Tsui on

Ph.D. position avaliable at the University of Waterloo. This program is funded by NSERC and CFI to construct UHV variable temperature nanoindenter and micro-tensile tester. Candiates must have a strong background in instrumentations and programming. Please contact Ting Tsui at tttsui [at] uwaterloo.ca (tttsui[at]uwaterloo[dot]ca)

PostDoc Position Available at MIT

Submitted by ChristineOrtiz on

PostDoc Position Available

Ortiz Laboratory at MIT

Professor Christine Ortiz, Department of Materials Science and Engineering , Massachusetts Institute of Technology, Cambridge, MA, USA

To apply for this position; send cover letter including date available to start, CV, full list of publications, and the names of three references to: cortiz [at] mit.edu (cortiz[at]mit[dot]edu)

 

The analytical solution for a stress field in an infinite plate with a circular inclusion due to an applied tensile stress

Submitted by Mike Tonks on

I need to know the analytical solution for the stress field in an isotropic infinite plate with a circular inclusion, assuming linear elasticity. The plate has an applied tensile stress.

The solution for a hole in an infinite plate is very common (http://en.wikiversity.org/wiki/Introduction_to_Elasticity/Plate_with_ho…). I need a similar solution in which the inclusion has some elasticity tensor C and the matrix some tensor C_0 with C=x*C_0, where x is a scalar.

Thanks!

2 PhD scholarships in geotechnical engineering at UPC, Barcelona

Submitted by Jean-Michel Pereira on

Two PhD scholarships, funded by the Spanish Ministry of Science, are currently available in the Department of Geotechnical Engineering and Geosciences at Universitat Politècnica de Catalunya (UPC) (Barcelona, Spain). The PhD positions are associated to the Project “Progressive failure and the reactivation of big landslides: Analysis, prediction and risks (BIG RISK)” with Professor Eduardo Alonso and Professor Jordi Corominas as principal researchers.

Memories of IT. Part 2

Submitted by Zhigang Suo on

Looking back at episodes of our lives, we reflect on how people meet and how such meetings change lives.  Information technology, broadly interpreted as means of communication among people, is always part of these narratives.  But central to such narratives are nearly always people themselves and the content of their communication, rather than the means of their communication.