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Jinsi ya kukokotoa Poissons Ratio

Poissons Ratio ni nini?

Poisson's ratio (ν) = transverse strain / axial strain: ratio of shrinkage perpendicular to stress; typically 0.2-0.5.

Fomula

Calculate Poisson\'s ratio: ν = (E-2G)/(2E)
E
E value — Variable used in the calculation

Mwongozo wa Hatua kwa Hatua

  1. 1Input material properties: Young's modulus and shear modulus
  2. 2Calculate Poisson's ratio: ν = (E-2G)/(2E)
  3. 3Results show lateral deformation under load

Mifano Iliyotatuliwa

Ingizo
Rubber: ν ≈ 0.5 (incompressible)
Matokeo
Steel: ν ≈ 0.3 (some volume change)

Makosa ya Kawaida ya Kuepuka

  • Confusing with strain/stress ratio
  • Not accounting for material nonlinearity

Maswali yanayoulizwa mara kwa mara

Can Poisson's ratio exceed 0.5?

Theoretically no for isotropic materials (>0.5 = unphysical volume expansion).

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