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On geometric discretization of elasticity

Submitted by arash_yavari on

This paper presents a geometric discretization of elasticity when

the ambient space is Euclidean. This theory is built on ideas from

algebraic topology, exterior calculus and the recent developments

of discrete exterior calculus. We first review some geometric

ideas in continuum mechanics and show how constitutive equations

of linearized elasticity, similar to those of electromagnetism,

can be written in terms of a material Hodge star operator. In the

discrete theory presented in this paper, instead of referring to

Non Local Model Vs Implicit Gradient Model

Submitted by Kapil.Nandwana on

Hi All :

 

I was wondering why some people prefer to use Non Local Model while some others use Implicit Gradient Model (which can be derived from Non Local Model) .

When implicit Gradient Model is itself derived from Non Local Model ,and its FE implimentation just involves an additional average to be calculated and what is the need to introduce gradient terms ??

 

Thanks Alot

 

Kapil 

Ph.D. studentship in smart material at University of Glasgow, UK

Submitted by Zaoyang Guo on

A three-year
PhD studentship is available within the Glasgow Research Partnership in
Engineering (GRPE) as part of the Joint Research Institute in Mechanics of
Materials, Structures and Bioengineering at the University of Glasgow. 
The
specific goals of the PhD will be to manufacture MREs and determine the
influence of manufacture conditions on the micro-structure and magnetic-sensitivity
of the magnetorheological elastomers (smart material).

Super Plastic Forming Die Cleaning

Submitted by intavintage on

I am working on a project for a more efficient process for cleaning supe plastic forming dies. Currently, we are cleaning them manually with an electric drill motor and a brush on the end of that. This process is ergonomically doing a number on our employees, not say that the process is lengthy. Is there anyone that has had any luck with any other process cleaning dies? Thanks.....

GRE Verbal, how much does it count?

Submitted by Temesgen Markos on

I am in the process of applying for a PhD in computational solid mechanics in the US and I am about to take the GRE. Well I have been kind of busy at my work and didn't really get time to study the word list.

My question is, how much weight does the verbal part have in admission/fellowship/assistantship decisions? If I have really good GPA's and research experience with enthusiastic refrees, can I still make it with medicore results on the verbal part?

Influence of Interfacial Delamination on Channel Cracking of Brittle Thin Films

Submitted by Rui Huang on


H. Mei, Y. Pang, and R. Huang, International Journal of Fracture 148, 331-342 (2007).

Following a previous effort published in MRS Proceedings, we wrote a journal article of the same title, with more numerical results. While the main conclusions stay the same, a few subtle points are noted in this paper.