• Volumetric Strain:, Study notes of Acting

If the load applied cause volume change then the strain is called volumetric strain ,When there is volumetric stress, volumetric deformation or volume strain ...

Typology: Study notes

2021/2022

Uploaded on 09/27/2022

myas
myas 🇬🇧

5

(9)

216 documents

1 / 9

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Strength of Material Assist. Lec.Elaf Jasim
1
ةرضاحملاةسداسلا ناحم مساج فلايا ةيسيردتلل.
Volumetric stress and volumetric strain:
If the forces acting on an object deform it in such a way that there is a change to
the volume of that object, then we are talking about volumetric stress.
Volumetric Stress is equal to the following pressure:
Volumetric Strain:
If the load applied cause volume change then the strain is called volumetric
strain ,When there is volumetric stress, volumetric deformation or volume strain
changes the volume of the body. Mathematically, we define that change as:
pf3
pf4
pf5
pf8
pf9

Partial preview of the text

Download • Volumetric Strain: and more Study notes Acting in PDF only on Docsity!

Volumetric stress and volumetric strain:

If the forces acting on an object deform it in such a way that there is a change to the volume of that object, then we are talking about volumetric stress.

Volumetric Stress is equal to the following pressure:

 Volumetric Strain:

If the load applied cause volume change then the strain is called volumetric strain ,When there is volumetric stress, volumetric deformation or volume strain changes the volume of the body. Mathematically, we define that change as:

Similar to Tensile Strain, Volumetric Strain also has no units.

 Bulk's Modulus of Elasticity:

Bulk's Modulus is a numerical constant that describes the elastic properties of a solid or fluid when it is under pressure on all surfaces. The applied pressure reduces the volume of the material.

Mathematically, Bulk's Modulus is defined as:

 B = Bulk modulus in N/m^2 or Pa  ΔP = Change of the pressure that applied on the material  ΔV = Change of the volume of the material  V = Initial volume of the material When the value is independent of pressure, this equation is basically a specific form of Hooke's law of elasticity.

Example 3:

EX.4: