Which one of the following represents 'constitutive relationship'?
A
Vertical displacements in a structure
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B
Rotational displacements in a structure
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C
System of forces in equilibrium
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D
Stress-strain behaviour of a material
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Solution
The correct option is D Stress-strain behaviour of a material Constitutive relation is a relation between two physical quantities that is specific to a material or substance. Hooke's law is a constitutive law because it shows the relation between stress-strain behaviour.