Question

hat is the mportamce of Mohr's stress circle? The major and minor principal stresses at a point are 120 N/mm2 and 40 N/mm2 respectively. If a Mohr's stress circle is drawn for the stresses, determine the radius of the Mohr's stress circle

Answer 1

Mohr's stress circle Mohr's stress circle is a graphical method used to determine various stress such as normal stress, shear & resultant stress. If is also used for determining the stress components on an inclined plane. This method is mostly used compared to analytical method, due to its advantages i.e easier construction & simplicity Given that sigma_1 = 10 N . .mm^2 sigma_2 = 40 N/mm^2 Radius of the mohr's stress circle R = sigma_! - sigma_2/2 R = 120 - 40/2 = 80/2 = 40 mm Therefore R = 40 mm Therefore The radius of Mohr's circle is 40 mm