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Thermodynamics for mechanics

Submitted by Temesgen Markos on

I work on solid and fluid mechanics. Some times I come across thermodynamical arguments (like second law, free energy etc) and I don't understand them well. I wanted to read thermodynamics books but got confused in the so many different approaches used. My frequent encounter with thermodynamics is in constitutive equations for solids where they use the second law to verify whether the constititive relation is acceptable or not. Seldom I find it in surface tension and related phenomena in fluids.

Mechanics bibliography

Submitted by N. Sukumar on

Is there a need for an online mechanics bibliography on iMechanica?  This would be a searchable index for publications that are of interest to mechanicians. An online form on iMechanica can be set-up for allowing journal entries into the bibliography.  A search-template like the one used for the Computational Geometry Bibliography might be suitable.  Can also include a URL when entering, and an automatic conversion to a BibTeX entry (LaTeX users) can be a feature that can be provided.  At least for recent publications (difficult to have all prior publications unless someone enters them), it could become a very good resource for mechanics literature and quick access to the same.  This might also encourage broader participation in the community, at least in keeping an uptodate bibliography.  I view this as a potential supplement to webofscience and one that is open to all. If there is interest and consensus on the need for such a feature, we can converge to a format that can be implemented. Please pen your thoughts and share your opinions.

Finding center of mass of sphere with a spherical cavity removed.

Submitted by jngf on

Hi there,

  I would be very grateful to anybody who can solve the following question for me (and show their working as to how they solved the problem):

 A spherical cavity of radius r is made inside a uniform solid sphere of radius R, in such a way that the two spherical surfaces touch at the point P. If G is the centre of mass of the remaining material,

Copyright

Submitted by ericmock on
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As a member of Penn State's Faculty Senate Committee on Research (SCoR), the attached document was presented to us for endorsement. This comes from the CIC (basically the BigTen plus UChicago) provosts. I have seen a few posts in various threads concerning publishing and copyright issues so I thought I would see how y'all feel about it. In brief, the document encourages authors to think when signing that copyright transfer form. The members of SCoR obviously span a very wide range of disciplines and were generally agreeable to endorsing the document.

Why should I write a descriptive title for my comment

Submitted by Anonymous (not verified) on
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A comment consists of two fields, labeled as "Subject" and "Comment". After you submit the comment, the Subject will appear on the right side of iMechanica, under "Recent comments", a most popular feature of iMechanica. You want to make sure that the Subject line accurately reflects the content of your comment, capturing reader's attention yet not being sensational.

Size effect of energetic crystals in high explosives and solid propellants

Submitted by Henry Tan on
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Energetic materials, such as solid propellants and high explosives, can be considered as composite materials with energetic particles embedded in polymeric binder matrix. These energetic materials display strong particle size effects. For example, large particles debond earlier than small ones in high explosives.