Latest Posts by lanas-own-blog - Page 3

Delicate Nature and Animal Embroidery by Emillie Ferris 

UK artist Emillie Ferris composes stunning embroidery illustrations of wildlife and nature into pendants and oval frames. Depicting delicate animals, such as butterflies, deers and rabbits, Ferris’ choice of wildlife subjects exist in the realms of an ethereal forest.

Her embroidery technique displays meticulous talent and detail to color, shape, as well as the texture of fur, which stands out against a clean off-white background. You can find more of her dainty designs at her Etsy shop!

More Than You Ever Wanted to Know About Mechanical Engineering: Strain Energy for Some Common Situations

Last time, we talked about strain energy - the energy that is stored when an object undergoes deformation due to applied stress. We worked out a general expression for strain energy density (the amount of strain energy stored per unit volume):

Note that this is easily convertible to overall strain energy - we would just have to integrate strain energy density over the volume of the object to get total strain energy.

The dV here is just the product of dx, dy, and dz (like regular volume is the product of x, y, and z). Or, you could say it’s the product of the cross-sectional area (dA) and dx.

Bearing this in mind, we can easily get some simple expressions for strain energy in some familiar situations.

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F-22 Raptor with a launch of the Space Shuttle in the background.

NGC 5189.

Credit: NASA, ESA and The Hubble Heritage Team (STScI/AURA)

NGC 3324.

Credit: NASA, ESA and the Hubble Heritage Team (STScI/AURA)

Merging clusters in 30 Doradus.

Credit: NASA, ESA and E Sabbi