Calculating Young Modulus to GPa

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SUMMARY

The discussion focuses on converting the Young's modulus calculated from energy in electronvolts (eV) and volume in angstroms cubed (angstrom3) to gigapascals (GPa). The key steps involve converting eV to joules, as pascal (Pa) is the SI unit for pressure. The conversion factor from eV to joules is essential for accurate calculations, as is converting angstrom3 to cubic meters to align with SI units.

PREREQUISITES
  • Understanding of Young's modulus and its significance in material science.
  • Knowledge of unit conversions, particularly between eV and joules.
  • Familiarity with SI units, specifically pascals (Pa) and cubic meters.
  • Basic calculus, particularly in relation to derivatives and their physical interpretations.
NEXT STEPS
  • Research the conversion factor from electronvolts (eV) to joules (J).
  • Learn about the significance of Young's modulus in material properties.
  • Study the process of converting volume from angstrom3 to cubic meters (m3).
  • Explore the application of Young's modulus in engineering and materials science contexts.
USEFUL FOR

Material scientists, mechanical engineers, and researchers involved in material property analysis will benefit from this discussion, particularly those working with Young's modulus calculations and unit conversions.

saray1360
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Hi,

I have calculated the young modulus of a system by calculating the second derivate of the energy against the axial strain and then I devided the result on the volum.

The unit of the energy is eV and the volume is in angstrom^3. I want to calculate the young modulus in GPa, should I consider a coefficient? how could I get to GPa out of [eV/(angS^3)] ?

Regards,
 
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convert to SI

Hi saray1360! :smile:

Pa is an SI unit, so you need to convert everything else to SI units first.

angstrom is easy :biggrin: … but eV is totally non-SI, so you'll need to find the factor to convert it to joules. :wink:
 

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