Firstly, Young's Modulus is a measure of the degree of stiffness of an isotropic material. It is the ratio of uniaxial stress to strain while the material behaves according to Hooke's Law. Therefore it is measured in Pascals or Newtons per Metre Squared, Imperial units are psi.
Secondly, the Young's modulus of steel varies slightly depending on the grade of steel being used from 190 GPa to 210 GPa, for basic calculations a value of 200 GPa can be assumed.
Between 190 GPa and 210 GPa (nominal 30,000,000 PSI)
10850 kg/mm2
or
110 GPa
or
15,000,000 psi
When we talk about deformatation, we are referring to two properties, namely Elasticity and Plasticity. These properties are measured using constants known as " Moduli of Elasticity". There are 4 such moduli: Young's Modulus Axial Modulus Rigidity Modulus Bulk Modulus The larger the value of the Bulk Modulus, the harder it is to compress the material.
Newton 3rd Law which states for every force action there is an equal but opposite reaction force
Type your from the hook's law, stress is directly proportional to the strain under the elastic limits. σ α ε where, σ - tensile stress. ε - strain. now σ =E ε where, E is the proportionality constant or the young's modulus of the material. the extension of the hook's law where the shear stress is directly proportional to the shear strain. ζ α γ ζ - shear stress. γ - shear strain. ζ = Gγ where G is the modulus of rigidity. A pure shear stress at a point can be alternatively presented by the normal stresses at 450 with the directions of the shear stress. σ1 = -σ2 = ζ. using this principle you get G = E/(2(1+ ν)) is the 1 equation. where, ν is the poisson's ratio.this is the basic relation between E,G, ν. the change in volume per unit volume referred to as the dilation. e = εx + εy + εz the shear strains are not taken into account because they do not contribute to any volume change. for an isotropic linearly elastic materials for use with Cartesian coordinates εx = σx/E - νσy/E - νσz/E similar equations are formed for εy ,εz . e = εx + εy + εz = ((1 - 2ν)/E)( σx+ σy+ σz) if σx= σy = σz = -p like a hydrostatic pressure of uniform intensity then -p/e = k = E/3(1 - 2ν) is the 2 equation where k is the bulk modulus. Addin 1 & 2 by bringing only the poisson's ratio to left side and taking all other constants to the right side the equation formed is the 9/E = 3/G + 1/k is the relation between the three modulus. here...
joules
Sir Isaac Newton said that for every action there is an equal and opposite reaction.
The Young's modulus of spider silk is 1 E10 Newton's per square meter. Comparatively, the modulus of high tensile steel is only 2 E11 Newton's per square meter.
This is known as the Modulus of Elastisity, or Youngs Modulus (in tension/compression) and will be a constant as long as the deformation is in the elastic range.
It is around 40 GPa.
physics coursework??
Scott Young, a well-known Canadian sportswriter.
1. Young's modulus of elasticity, E, also called elastic modulus in tension 2. Flexural modulus, usually the same as the elastic modulus for uniform isotropic materials 3. Shear modulus, also known as modulus of rigidity, G ; G = E/2/(1 + u) for isotropic materials, where u = poisson ratio 4. Dynamic modulus 5. Storage modulus 6. Bulk modulus The first three are most commonly used; the last three are for more specialized use
the modulus for brass is 91*109 Nm-2
http://www.engineeringtoolbox.com/modulus-rigidity-d_946.html
When we talk about deformatation, we are referring to two properties, namely Elasticity and Plasticity. These properties are measured using constants known as " Moduli of Elasticity". There are 4 such moduli: Young's Modulus Axial Modulus Rigidity Modulus Bulk Modulus The larger the value of the Bulk Modulus, the harder it is to compress the material.
We knew from Hook's law- "stress is proportional to strain." So, stress = k * strain [here, k is a constant] or, stress/strain= k Now, if the stress and strain occurs due to axial force then k is known as modulus of elasticity and it is denoted by E. if the stress and strain occurs due to shear force then k is known as modulus of rigidity and it is denoted by G.
The absolute value or the modulus.
newton was most knon for his law of gravitation