UPSC Exam > UPSC Videos > Civil Engineering Optional Notes for UPSC > Normal Stress
Normal Stress Video Lecture | Civil Engineering Optional Notes for UPSC
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FAQs on Normal Stress Video Lecture - Civil Engineering Optional Notes for UPSC
| 1. What is normal stress in mechanical engineering? |  |
Ans. Normal stress in mechanical engineering refers to the force exerted on a material per unit area perpendicular to the applied force. It is a measure of the internal resistance of a material to deformation and is commonly represented by the symbol σ (sigma).
| 2. How is normal stress calculated? | |
Ans. Normal stress can be calculated by dividing the applied force (F) by the cross-sectional area (A) of the material perpendicular to the force. The equation for normal stress is given by σ = F/A. The resulting value of normal stress is typically expressed in units of pressure, such as Pascals (Pa) or pounds per square inch (psi).
| 3. What are the different types of normal stress? | |
Ans. In mechanical engineering, there are primarily two types of normal stress: tensile stress and compressive stress. Tensile stress occurs when a material is pulled apart, causing the material to elongate. Compressive stress, on the other hand, occurs when a material is compressed, causing it to shorten or deform.
| 4. How does normal stress affect the mechanical behavior of materials? | |
Ans. Normal stress plays a crucial role in determining the mechanical behavior of materials. It determines whether a material will undergo elastic deformation (reversible deformation), plastic deformation (permanent deformation), or fracture. When the normal stress exceeds the material's yield strength, it leads to plastic deformation, while beyond the ultimate tensile strength, it results in fracture.
| 5. What are some common applications of normal stress in mechanical engineering? | |
Ans. Normal stress is widely used in various mechanical engineering applications. It is essential in the design and analysis of structures, such as bridges, buildings, and aerospace components. Normal stress calculations help engineers ensure the structural integrity and safety of these structures by evaluating the material's ability to withstand applied forces and loads. Additionally, normal stress analysis is crucial in designing mechanical components, such as machine parts, to ensure they can handle the expected operational forces and prevent failure.
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Dec 27, 2024 Last updated |
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