Calculating breaking point of an egg

[Brosabal]

calculating breaking point of an egg ...

A general engineering question, how would i go about calculating the breaking point of an egg. The shape is what really gets to me. Then there's calculating Ix and stuff. I need help, anyway of going my calculating the breaking stress of an egg (top to bottom) would help. Thanks

Bross

 

[Astronuc]

Ostensibly one calculates the shear stress required to fracture the membrane. One the fracture is initiated, it takes less force to propagate the facture. This also assumes an external impact.

Example of internal pressure/force on egg fracture -
The Fracture Strength under Internal Pressure of the Eggshell of the Domestic Fowl
http://links.jstor.org/sici?sici=0962-8452(19960422)263%3A1369%3C433%3ATFSUIP%3E2.0.CO%3B2-V

Here's an expert - http://www.mech.canterbury.ac.nz/people/entwistle.shtml

Professional Interests

Fracture strength of egg-shells and the establishment of how the organic features of the structure affect the fracture strength of the calcite; mechanical behaviour of softwood.

 

[ravenprp]

:

Calculating the breaking point of an egg can be a complex task, as it involves considering various factors such as the shape, material properties, and applied force. However, there are a few general steps you can follow to approach this problem.

Firstly, you need to determine the material properties of the eggshell. This includes its thickness, density, and Young's modulus (a measure of the material's stiffness). These properties can be found through experimentation or by researching existing literature.

Next, you need to consider the shape of the egg. The eggshell is not a perfect sphere, so it is important to take into account its dimensions and curvature. This will help you determine the moment of inertia (Ix) of the egg, which is a measure of its resistance to bending.

Once you have these values, you can use equations from mechanics, such as Euler-Bernoulli beam theory, to calculate the breaking stress of the egg. This will give you an estimate of the maximum force the eggshell can withstand before breaking.

It is important to note that the breaking point of an egg can vary due to natural variations in eggshell thickness and other factors. Therefore, your calculated value may not perfectly match the actual breaking point of the egg.

In summary, calculating the breaking point of an egg involves understanding its material properties, considering its shape, and using equations from mechanics to estimate the breaking stress. I hope this helps you in your calculations. Good luck!