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Lee Margetts's blog

Survey of Computing Platforms for Engineering Simulation

Submitted by Lee Margetts on

How many organisations are using Cloud Computing? Is the use of High Performance Technical Computing in engineering simulation set to grow in the next 5 years? Will Tablet PCs be powerful enough to run my application? What do my peers think?

These are typical questions asked by the engineering simulation community. Wouldn't it be great if we could take a snapshot of the type of computing platform we're using today and also predict where we will be in the next 5 years? 

Cracks found at reactor at Hunterston B nuclear power station

Submitted by Lee Margetts on

Perhaps some of those on this site have seen the news article on the BBC website yesterday about cracks appearing in the reactor at the Hunterston B nuclear power station. As the article states, cracking in the graphite bricks is predicted and the regulators are happy that the reactor is safe to operate.

Sutured tendon repair; a multi-scale finite element model.

Submitted by Lee Margetts on

We've recently published an open access journal paper that looks at the mechanics of sutures used to repair severed tendons. A homogenization strategy is used to derive effective elastic properties for tendon fibrils and intracellular matrix. We have found that regions of high stress correlate with the regions of cell death (necrosis) that are sometimes observed in patients.

If this is of interest, please feel free to view the paper here.

 

Research Associate in 4D Image based quantification and simulation

Submitted by Lee Margetts on
An excellent opportunity to work in a world leading team with privileged access to facilities that most researchers can only dream about.
Closing date: 18/04/2013

Reference: EPS-02440

Faculty / Organisational unit : Engineering Physical Sciences, School of Materials

Division : X-Ray
Imaging

Salary : Grade 6 (currently £29,541 - £36,298 p.a.)

Employment type : Fixed Term

Using engineering to understand biological processes

Submitted by Lee Margetts on
All
I'd like to share the following paper with you. I think its an interesting example of where
engineering knowledge can be used to help understand biological processes. We used microscope work and finite element analysis to test a hypothesis as to how a biological structure, crimp, forms in tendons. We'd like to continue this work, so all comments welcome.

Were you using FEA in 1995?

Submitted by Lee Margetts on

All,



Anybody have approximate run times for the following linear static problems:



A) In 1995 on a reasonable workstation

20,000 degree of freedom



B) Now on modern desktop computer with quad core and plenty of RAM

20,000 degree of freedom

200,000 degree of freedom

1,000,000 degree of freedom

Any contributions/guesses/opinions welcome. The scatter will be useful.



Thanks



Lee

Teaching FEM to Biologists/Medics

Submitted by Lee Margetts on

All,



Could anyone recommend courses, online materials or text books that
would be suitable for teaching the finite element method to someone with
a non-engineering background. This request is on behalf of an MD
student wishing to use the FEM for modelling the wrist. We're initially
looking for introductory materials.



Best regards



Lee

The "Goldilocks" Effect in Fossilized Dinosaur Trackways

Submitted by Lee Margetts on

The following paper is now online:

Falkingham P.L., Bates K.T., Margetts L. and Manning P.L. (2011) "The
'Goldilocks' effect: Presevational bias in vertebrate track
assemblages", Journal of the Royal Society Interface

See: http://rsif.royalsocietypublishing.org/content/early/2011/01/12/rsif.20…

Authors welcome any comments for future studies!