Mohr’s circle for the state of stress defined by300030MPa

Mohr’s circle for the state of stress defined by
30 0
0 30

MPa is a circle with

1. centre at (0, 0) and radius 30 MPa
2. centre at (0, 0) and radius 60 MPa
3. centre at (30, 0) and radius 30 MPa
4. centre at (30, 0) and zero radius

Principle stress, σ₁₁ = σ₂₂ (both 30)
∴ Radius of Mohr circle = σ₁₁ – σ₂₂ = 0
In centre will be at (30, 0)