a) σ=D(ε-ε0)
b) σ=D
c) σ=Dε
d) σ=Dε0
Answer: a
Explanation: The relationship between the stress and strain that a particular material displays is known as that particular material’s stress–strain curve. It is unique for each material and is found by recording the amount of deformation (strain) at distinct intervals of tensile or compressive loading (stress).
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