Compute modulus of resilience Assignment Help

Toughness - Compute modulus of resilience

A steel specimen represents upper yield point at 210 MPa and lower yields point at200 MPa. If modulus of elasticity, E, for steel is 210 × 103 MPa. Compute modulus of resilience.

Solution

Modulus of resilience = σ2Y/2E

Here, σY is yield strength. σY consequent to lower yield point. Thus σY  = 200 MPa

 

∴    Modulus of resilience =((200)2 × (106 )2) / 2 × 210 × 103 × 106 N-m/m3

Here note that MPa = Pa × 106 = (N/m2  (10)6))

∴    Modulus resilience = 95.24 × 104 N-m/m3

Otherwise       95.24 × 10-3 N-mm/mm3


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