What is Mechanical engenereeing: Definition and 100 Discussions

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Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

Copyright strictly reserved to Prof. Som and NPTEL, Govt. of India. Duplication prohibited. Lectures: http://www.nptel.ac.in/courses/105101082/ Syllabus: http://www.nptel.ac.in/syllabus/105101082/

This is Ashwani, newly joined this beautiful forum. I am a mechanical engineering graduate with MBA in operations management and working with a manufacturing company in India. Thanks, Ashwani Dusadh

Homework Statement A storage tank has the cross-sectional shape shown attached and is of 1m breadth. Calculate the resultant force acting on the inclined surface AB and its point of action. The density of the liquid is 900kgm–3 and take g = 9.81ms–2. Homework Equations P = ρgh F = ρA Point...

Homework Statement I need help with the following question: A pile-driver has a hammer mass of 1000 kg which is dropped onto a pile from a height of 5 meters. The pile is driven 0.5 meters into the ground. The pile has a mass of 500 kg. Calculate the retarding force exerted by the ground on...

Homework Statement Hello. I am trying to work out, the tensile stress, shear stress, and factor of safety. I have these to apply to it. Tensile strength = 460MPa Shear Stress = 280MPa Bolt Diameter of 8mm Force of 9kN Angle (a) = 50 degrees. Homework Equations Diagram[/B] The Attempt at a...

I can't find equations for wall thickness or required temperature to generate steam at 6000psi. The goal here is a pressure vessel 'cylinder' 30" diameter, 36" long. It will be used to pump 42000psi hydraulics using a piston pump directly driven to a smaller series of pistons to allow the...

Homework Statement Homework EquationsThe Attempt at a Solution I am a little confused by the wording of the textbook solution. from the solution, the displacement at the end C of the rod = the displacement of C relative to the fixed end A, why not the displacement of C relative to the fixed...

What are the electrical properties of standard lubrication oil (Engine oil)? Where to find? Please give the sources. I have tried my best on the internet.

I have a problem to do with my project in college. I'm creating a hanging fire pit, basically made of 3 lengths of square steel bar connected to a plate at the top and on hinges. The 3 legs of the frame move in slots and when in the open position would be at 45 degrees. The actual fire pit is...

Hello to everyone, I am an undergrad mechanical engineering student. Currently in 4 semester. I have this one major problem. I cannot memorize facts and diagrams. We have this subject, production technology, which consists of lots and lots of facts and for me an overwhelming amount of...

Homework Statement I don't have a specific question, but I try to calculate very easy on a simple Gokart in a project. I try to figure out if there is a way to approximately determine what the damping ability of rubber wheels is because I don't have any suspension on it. Homework Equations I...

Hey! I hope this is the right place to post this. I'm looking for recommendations for a modeling/drafting cad program that is relatively affordable and capable. I have extensive experience with NX and Solidworks, but can't justify paying for either of those to simply use at home. My non-work...

One of classes needs me to interview an engineer with a degree of my same major (mechanical engr), preferably with 7+ years of experience in the field (we can lie about that, but deadlines are approaching and I've struck out everywhere), AND A BUSINESS CARD (used as proof to my professor that...

HI I am not sure why there is a problem with my material model, I seem to be getting an error: "Only one hardening slope is allowed for kinematic hardening". material property is: tangent modulus (Et = 15GPa) Yield stress is 19000 MPa please help me

I am learning about shearing stress, and I am a little confused about the area of projection mentioned in my book. When it introduces it, it shows a plate with a rivet through it. The plate is of thickness t, and the diameter of the rivet, d. It shows the plate and the rivet cut in half by a...

Hello, Im struggling a bit with this problem. (uploaded)I don't know how to sketch the equivalent thermal circuit for any of them. Does it have to look like anything like that? the thermal circuits are for b) parallel connectd right? and for aswell? And I am getting wrong answers for a)...

Can anyone help me? I have a question with 3 part answers on my Mechanical Principles assignment. I believe I have answered question part 'a' and 'b' but I have been stuck on question part 'c' for days! So the question is: Q5. The simply supported beam shown in FIG 4 is 5meters long with a...

I want to work in the field of AE, I live in India and am applying to institutions in the US for undergrad. A lot of people told me that as an international student or even as person it will be very hard to get a job in the field of aerospace if I major in AE. If instead, I major in ME with a...

I plan on going into the weapons engineering field and I want to design tanks. Either the armor or the gun. Both fascinate me and I was just wondering, what is the best minor to mechanical engineering for both career options? Materials for the armor and electronic for the gun?

Homework Statement Determine the maximum velocity attainable by a vehicle with the following conditions: RWD 6% grade Weight = 20 kN CG is 1.25 m behind front axle and 0.5 m above ground level. Wheel base is 2.8 m. Effective rolling radius of wheel = 30 cm Coefficient of aerodynamic drag =...

Homework Statement Homework Equations The response of a spring mass system can be simplified to equal: x(t) = (x0 - (F0 / (k - mω2))cos(ωnt) + (x'/ωn)sin(ωnt) + (F0 / (k - mω2))cos(ωt) where x & x' are the initial conditions ω is the exciting frequency ωn is the natural frequency k is the...

Hello All, I have a question for which I'd like an authoritative answer, if some physics genius would be so kind. I'll try to provide as much background as I can but follow up questions for clarity are more than welcome! So I'm working on the design for a patent application and it involves a...

Hi! I am a student who is passionate about engines and mechanics (although the major I'm pursuing is CS.I believe we must not inhibit our intellectual curiosity). The following link will take you to the picture of an uncovered General Electric Next Generation Turbofan engine used by the 787...

Allo, this is my first post here. I must say this forum has everything not just Physics but Mathematics and Engineering, all my favorite things. Introduction: I would like to start with an introduction of a 'rotary engine' for those who don't know. Unlike the common boxer piston engine with...

I'm working on a project to design Atmospheric Water Generator, to generate 3 litres of water per day. and I'm using the same concept as dehumidifier. My problem is I want to figure out how powerful my compressor should be. I need to calculate that, given a heat flow rate of 352.91 kJ/hour...

This is my first year and my 2nd week of Mechanical Engineering and I'm enjoying it a lot! I'm sure I'm going to love going through its ups and downs as this was and will always be my dream degree. Initial impressions are that most of the learning is done with self-study (theoretical part) and...

would it be possible for someone in a career like Mech. Engineering to go into a field like investment banking. would skills in M.E serve any purpose in investment banking?

Hello everyone, Just saying what's up. I guess if I'm posting in here I'll ask something and see what happens. Anyone think its possible to get an associates degree in mechanical engineering, then go straight into finding ways to get experience and work up from there and still be successful...

I'm going to go straight to the point, I LOVE astrophysics, I've been interested in astrophysics for quite a few years now and I'm thinking of doing my EPQ on astrophysics as well. This was until my parents pointed out that employability for an astrophysics degree(I want to do masters) is...

< Mentor Note -- thread moved to HH from the technical engineering forums, so no HH Template is shown > I have a design problem that has two predictions that I must make. The constants that I am given is the amount of teeth each gear has, the diameter of the gears, the input torque, speed in...

Hello all, Our project needs to implement a force (strain) gage underwater for one of our tests. Our budget is pretty tight and we can't afford a wash-down strain gage that can support the forces that we will be operating at (~500 lbs). Does anybody know a way to hermetically seal a strain...

I am currently in a gap year, as i wanted to be 100% sure on what UNI course i was going to go for in 2016. I've been looking into mechanical engineering as a possible option, but my main worry was regarding the extent to which 'maths' is used during the course, and during your actual career. I...

I recently read a post on "How much energy does an alternator use?". So I read some more online articles and found that some people have thought of running their alternator on their drive shaft. This doesn't seem more economical to me, since you will still loose engine power . If the alternator...