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Stress, When a, exter ral force aces, body. Ik, on, undergoes deformabion and at the Same time the body, resisis defomakion. The magnitude of the resisting force is, numerically egual to the applued force . This Internal, resisting torce per unit area, is called, Stress., Stress =, Force, P., Area, STRAIN :, When a, body is subjected to, an external force, there is Some change m, dimansion, of the body, is, Numerically the Strain is equal to, ratlo of Change, in lergth to te Original langth of he body, to the, Change in Legth, Ongmal Legth, Strain =, SIMPLE SIRESS, COMPOUND TRESS, * When, body, is subjected to, external for e, in one direc&on, the stress developed in te bode is called, Simpe stress., * When a, body is Sabjected to, Ore directi on, te ss dereoped in, extermal force, an, In more than, The body is called, Compound Stress, Scanned with CamScanner

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VoluMETRIC STRAIN :, Volumetric Strain, is defired, Yolume of the bode., Cas the Tatio of, Charge, In Volume to the Original, Volumetric Strain =, Chenge in Yolume, Original Volume, HOOKE'S LAW, It States that When a Material is loaded,, With in the, elastic limit , thetress is directly, Propotiored to strain., Stress d Strain (with, its elasete limit, in, E =, Stress, %3D, Strain, FACTOR OF SAFETY, It, Is defired as the, ratio of Celtimate, tensile stress to the Peomissible stress (working), Ultimate Stress, Factor of Salety, こ, Permissible Stress, Scanned with CamScanner