At a point in a stressed material, the stress combination acting on a plane is a 90 kPa compressive stress and a 30 kPa shear stress, while on a perpendicular plane, the stress combination is 30 kPa compression and 30 kPa shear. Use the Mohr’s circle for this stress analysis. (a) Determine the values of the major and minor principal stresses. (b) Determine the angle between the major principal plane and the plane where the 90 kPa compressive stress acts.

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Solid Mechanics

Engineering mechanics is a branch of science that deals with forces causing bulk motion in bodies and the effect that these forces cause on the bodies. Engineering mechanics does not deal with the internal changes that occur on account of these external forces. The internal effects in a body or a material under the action of external forces are studied in a new branch of science called solid mechanics, the strength of materials, or the mechanical behavior of engineering materials.