Design of Machine Elements is generally referred as DOME. Wait! DOM and DOME both are names of different subjects in engineering. DOM is Dynamics of Machinery. So, moving up to DOME again. DOME is studied in Third year 1st semester of mechanical engineering according to university of Pune. As usual, subject is divided into 6 main parts called as units. Generally, each unit contain similar kind of matter but sometime its not possible.
We can’t say that first unit is simple and introduction but some part of this unit is introduction which makes student a bit ready for design subject. It covers requisites of design engineers. standards etc. After the introduction DOME covers some of the small design elements which are very common for mechanical engineering students. These parts include knuckle joint, lever, shaft design, cotter joint, curved shafts etc.
Shafts, Keys and Couplings Part:
This is second unit and as name suggests it covers various types of keys, shafts. Its somewhat difficult part just because of its vastness and contains a lot of formulas. As a mechanical engineer I have done these designs in my college life but really shaft design is most difficult part I faced. Of course, this is my personal thinking and you really not needed to worry about that. Some major names under this topic could be Splined shafts, saddle key, sunk key, flange coupling, flexible pin coupling and much more.
Another important topic is Power Screws. Its really very practical as well as easy and moreover interesting topic. Most of the teachers prefer to start DOME from this topic. Power screw is very commonly used concept these days. Every four wheeler vehicle needs one. We need to learn its properties viz. single threaded screws, multiple threaded screws, square thread, trapezoidal threads, self locking power screw.
This is second good part after power screws. Here, we get to learn helical springs, helical compression and helical tension springs, leaf springs, concentric helical spring, telescopic springs. This part is also very practicable and interesting. Just it have somewhat harder and more formulae than power screw part.
This part explains a lot about designing the joints in mechanical stuff. Here we need to learn two major distinctions, Threaded joints and Welded Joints. Both have own sets of formulas and pretty different concepts. Comparatively, welded joint is somewhat simpler part than threaded joints.
This is one of my favorites. When we initially start studying this part it looks damn dangerous. But in actual its very simple, some logarithmic formulas frighten us from such a good topic and really its mark giving topic any way.
So, I have covered the stuff about Design of Machine Elements.
Thanks for Reading.