DLP-MECH-PP107-Fundamental Engineering concepts

This document is one of a series of documents which provides information about various concepts related to forces, stress, and deformation in engineering. It starts by defining force and torque and explaining their effects on the shape and motion of objects. The document also introduces the concept of load, which refers to external forces and torques acting on a body.

Next, the document discusses stress, which is the result of internal forces within an object when a load is applied. It explains the equation for stress, relating force to cross-sectional area, and introduces the concept of the six major types of stress: compression, tension, shear, bending, torsion, and fatigue.

The document further explores each type of stress, explaining their characteristics and effects on objects. It describes how compression and tension stress can cause changes in length and buckling of objects. Shear and bending stress are discussed, highlighting the deformation and changes in shape they can induce.

Additionally, the document delves into torsional torque, which causes twisting and deformation in objects. It explains the relationship between torque and shear stress, considering structures with circular cross-sections. Examples are provided to illustrate calculations of shear stress and angular deflection in solid and hollow cylinders.

The document concludes by addressing deformation, distinguishing between elastic deformation, where the body returns to its original shape, and plastic deformation, where the body remains permanently deformed to some extent. It also includes a true or false activity to test knowledge on engineering stress-related concepts.

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