wat r stress n young's modulus ??
Asked by Archana Sharma | 27th Jun, 2010, 12:00: AM
Expert Answer:
Stress is defined as "force per unit area".
Stress = Force/Area
σ = Fn / A
where
σ = normal stress ((Pa) N/m2, psi)
Fn = normal component force (N, lbf)
A = area (m2, in2)
Young's modulus is the ratio of stress, which has units of pressure, to strain, which is dimensionless; therefore Young's modulus itself has units of pressure.
The SI unit of modulus of elasticity (E, or less commonly Y) is the pascal (Pa or N/m²); the practical units are megapascals (MPa or N/mm²) or gigapascals (GPa or kN/mm²).
Stress is defined as "force per unit area".
Stress = Force/Area
σ = Fn / A
where
σ = normal stress ((Pa) N/m2, psi)
Fn = normal component force (N, lbf)
A = area (m2, in2)
Young's modulus is the ratio of stress, which has units of pressure, to strain, which is dimensionless; therefore Young's modulus itself has units of pressure.
The SI unit of modulus of elasticity (E, or less commonly Y) is the pascal (Pa or N/m²); the practical units are megapascals (MPa or N/mm²) or gigapascals (GPa or kN/mm²).Answered by | 15th Jul, 2010, 02:55: PM
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