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The objectives of this video are to discuss & interpret stress vs. strain diagram for steel. First of all, the video shows the stress vs. strain diagram of steel where the x axis represents strain & the y axis represents stress. Next, the video starts talking about the curve plotted over the diagram where the origin represents zero stress & strain. The first zone of the curve which is linear in nature is known as elastic zone. In elastic zone, the material follows Hooke’s law and the constructions of structures must have to fall under this zone while doing the design phase calculations.
Moving on, the video briefly explains the importance & necessity of doing designs within the elastic zone. Later, the video elaborates other points and regions of the stress-strain curve e.g., yield point, ultimate strength and fracture. Doing so, the video also talks about the natures & properties of steel material. Overall, the video tries to give a crystal clear overview on stress vs. strain diagram of steel material- understanding which is must for the study of engineering mechanics.
Mechanics, the study of forces and physical bodies, underpins a very large proportion of all forms of engineering. A thorough understanding of mechanics is essential to any successful engineer. This course helps develop an understanding of the nature of forces with consideration for how they may be simplified in an engineering context. The conditions of equilibrium are then used to solve a number of problems in 2D and 3D before moving on to a broad range of topics including centroids, distributed loads, friction and virtual work. The course will also provide an introduction to dynamics, with a particular focus on the effects that forces have upon motion.