Answer:
4.024 MPa
Explanation:
a) Deformation is when a body is subjected to load, its dimension's changes. This change in dimension is called deformation.
Consider a shaft of length L is subjected to tensile loading P due to this the shaft is stretched to L_f. Then the deformation in the shaft
ΔL= L_f- L
Whereas strain is defined as ratio of deformation or change in dimension to the original dimension. As shown in the figure
Strain= ε= [tex]\frac{\delta L}{L}[/tex]
b) Given
UTS of a cold- worked steel material is 1300 MPa
We know that for steel E= 1300 MPa
modulus of resilience U_m= [tex]\frac{\sigma^2}{2E}[/tex]
U_m = 1300^2/2×210×10^3 = 4.024 MPa.
