Pressure from a fluid on a solid piece of metal

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SUMMARY

The discussion focuses on the effects of extreme fluid pressure on solid metal objects, particularly dense materials like steel. It highlights that under ocean pressures, such as those found in the Mariana Trench (approximately 1.1 MPa), observable compression of dense solids is minimal. However, at pressures around 20-30 GPa, significant compression (up to 25%) can occur, typically achieved through explosive means. The dominant effect of high pressure on steel is an increase in temperature rather than physical deformation.

PREREQUISITES
  • Understanding of fluid mechanics and pressure concepts
  • Familiarity with material properties of metals, specifically steel
  • Knowledge of pressure measurement units (GPa, MPa)
  • Basic principles of thermodynamics related to pressure and temperature
NEXT STEPS
  • Research the effects of pressure on materials using high-pressure experiments
  • Explore the principles of explosive compression techniques
  • Learn about the thermal properties of metals under extreme pressure
  • Investigate the applications of high-pressure physics in engineering, particularly in submarine design
USEFUL FOR

Students studying fluid mechanics, materials scientists, engineers involved in high-pressure applications, and anyone interested in the physical properties of metals under extreme conditions.

Minestra
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I'm curious if anyone knows of a good video of an extreme amount of pressure being applied to a sold amount of metal or other dense object. We're learning about fluids in my class, and naturally we discussed submarines, empty bottles, etc. but everything mentioned seemed to be hollow on the inside. Such that as you go deeper you can see that the object will compress and eventually fracture I suppose. Of course I have no means to conduct the experiment myself, but I'm curious what would happen to an solid object that is also very dense.
 
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Under ocean pressures, do not expect observable compression of a dense solid like steel ... you can get much higher pressures, but the dominant effect would be to make the steel hot.

... 20-30GPa pressure can get compressions up to 25% (usually using explosives)...[1]
By comparison, the water pressure at the bottom of the mariana trench is roughly 1.1MPa or 0.0011GPa. [2]

[1] http://maeresearch.ucsd.edu/~vlubarda/research/pdfpapers/ijss-86.pdf
[2] https://en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)
 

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