Question

Stress- strain law defined as ______

(a) σ=D(ε-ε^0)

(b) σ=D

(c) σ=Dε

(d) σ=Dε^0

I had been asked this question by my college director while I was bunking the class.

My doubt is from Two Dimensional Problems in section Two Dimensional Problems using Constant Strain Triangles of Finite Element Method

Answer 1

The correct answer is (a) σ=D(ε-ε^0)

For 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).