What is Mechanical: Definition and 1000 Discussions

Mechanical engineering is an engineering branch that combines engineering physics and mathematics principles with materials science to design, analyze, manufacture, and maintain mechanical systems. It is one of the oldest and broadest of the engineering branches.Mechanical engineering combines creativity, knowledge and analytical tools to complete the difficult task of shaping an idea into reality.
The mechanical engineering field requires an understanding of core areas including mechanics, dynamics, thermodynamics, materials science, structural analysis, and electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design (CAD), computer-aided manufacturing (CAM), and product lifecycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others. It is the branch of engineering that involves the design, production, and operation of machinery.Mechanical engineering emerged as a field during the Industrial Revolution in Europe in the 18th century; however, its development can be traced back several thousand years around the world. In the 19th century, developments in physics led to the development of mechanical engineering science. The field has continually evolved to incorporate advancements; today mechanical engineers are pursuing developments in such areas as composites, mechatronics, and nanotechnology. It also overlaps with aerospace engineering, metallurgical engineering, civil engineering, electrical engineering, manufacturing engineering, chemical engineering, industrial engineering, and other engineering disciplines to varying amounts. Mechanical engineers may also work in the field of biomedical engineering, specifically with biomechanics, transport phenomena, biomechatronics, bionanotechnology, and modelling of biological systems.

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  1. Deepesh

    Mass and vibration frequency

    My query here is, Suppose there is a 2 kg mass To oscillate it/vibrate it, it will take some force and it will have some natural frequency Now I increase the mass to 5 kg so to vibrate it, won't it take more force and so at the end, won't the natural frequency of the object increase? as its more...
  2. C

    Can a Mechanical Stopper Protect My Apartment Door from Intruders?

    I rented a unit at the 32th floor for 6 months. The door has only 2 locks. The top has a double lock. The bottom is a normal door lock. Now imagine a drunkard or robber that would just kick the door from outside. It is enough to break the lock as it's secure on just wooden frame. Do you know...
  3. Zouatine

    Question about potential for this mechanical force problem

    Hi! hope you are doing well , I'm trying to solve this problem ( mechanical problem) about structure with load F as it showing in the next figure , i want to determine to critical force F , the stability force ( which means if my load is bigger than the critical load my system will be unstable)...
  4. Dale

    How Does Mechanical Power Flow Through Structures Like Drive Shafts and Levers?

    I am trying to determine the flow of mechanical power through a structure like a drive shaft or even a simple lever. The components of the Cauchy stress tensor, ##\sigma_{ij}##, have units of force/area, so if I multiply by the velocity, then ##\sigma_{ij} v_j## would have units of power/area...
  5. Frigus

    Can we say that work done can be used only for mechanical energy?

    When we say that we apply force to a wall then we didn't transferred energy because of no displacement, but I think we somehow increase many types of energy of the wall. For e.g:- potential energy of particles in wall e.t.c. So according to me it means that we defined work only for mechanical...
  6. J

    Maximum mechanical actuator strength allowed by physics

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  7. cellist542

    Programs Engineering Triple Major (Mechanical, Electrical, Computer Science)

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  8. Frigus

    B Quantum mechanical model of an atom

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  9. C

    Climbing with Tension: Exploring Muscle vs. Mechanical Energy

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  10. E

    The Antikythera mechanism is a 2,000 year old mechanical computer

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  11. A

    How exactly does a turbine convert mechanical energy into electrical?

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  12. S

    Online Mechanical Engineering program

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  13. nuclearfireball_42

    Is Bernoulli's Equation related to the Conservation of Mechanical Energy?

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  14. G

    Mechanical Advantage of a Compound Wedge

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  15. amelune

    Schools Universität Leipzig - Mechanical Engineering

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  16. D

    Rigid body simulation of complex mechanical systems

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  17. M

    Engineering Help with pressure drop/transposing formula to get pipe diameter

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  18. E

    Analyzing Tensions in a Pulley System: Understanding Mechanical Advantage

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  19. D

    Engineering Should I Study Mechanical or Electrical Engineering to Design Magnetic Systems?

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  20. A

    I Mechanical system with de Broglie-like features

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  21. D

    Engineering How to know if I’m more inclined towards Mechanical or Electrical Engineering?

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  22. AbdullahS

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  23. E

    Mechanical advantage of a pulley system

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  24. E

    Mechanical Advantage for an Ebike Trailer

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  25. ramadhankd

    Shredder Cutting Area Calculation

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  26. V

    Mechanical vibrations: colliding blocks

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  27. V

    Mechanical vibrations: floating apple

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  28. V

    Mechanical vibrations: maximum velocity

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  29. YoungPhysicist

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  30. samalkhaiat

    Insights The Classical Limit of Quantum Mechanical Commutator

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  31. Z

    Engineering Senior mechanical engineering student With a 3.5 GPA but I really hate it

    Hello guys, Long story short i am a senior mechanical engineering student (graduating next year). But i do not like my major, at first i did not matter to me what i choose or what i study. i did not know what i like and mechanical engineering seemed a good option to me in terms of good job...
  32. MatNX

    Blast radius of mechanical explosion

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  33. theycallmevirgo

    Analog (mechanical) pressure gauge for a single cylinder filter

    https://www.flairespresso.com/product-page/flair-signature made a manual espresso machine and specify using 30 lb of pressure in the manual. In order to determine the correct pressure, they literally tell the user to push down on a kitchen scale. I'm considering a competing product, and that...
  34. maistral

    A Mechanical steps for the natural-neighbor interpolation

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  35. W

    How does the energy from ATP get to converted to mechanical energy?

    OK, so ATP releases energy. At what point are things moving? How does this "energy" lead to a muscle fiber contracting?
  36. D

    Find the tensions of two strings in mechanical equilibrium

    I tried to do the free body diagram of the problem, but I{m confused because the rule is inclined. Should I just use the given angles to calculate the forces on x and y? Also, how should I calculate the torques? Since I don't know the dimensions of the rule. Can you help me? I think that once I...
  37. s4thishkmr

    How to manufacture this nozzle?

    Hi guys , Need help and suggestion in finding best way to manufacturing this nozzle. Thanks
  38. L

    Gears create more torque? Prove it

    Hi guys, I was sizing up a servo motor the other day and started thinking. While we all know gear ratios will effectively "convert" speed into torque. I couldn't help wondering about the initial starting conditions.. The problem below... Lets say I have a motor with a max load of 1Kg...
  39. T

    How does mechanical torque affect generator volts and amps?

    Hello! today I have a question regarding the most efficient way to generate electricity by moving a magnet across a coil. The theoretical magnet would be moving in a circular motion fixed to the outer circumference of a driver wheel like in many simple generators, how does the physical torque...
  40. C

    Mechanical loads on ITER's magnetic coils

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  41. S

    Torque required to rotate a hollow cylinder containing chips

    I am designing a prototype to remove cutting oil from waste metal chip during Gun Drilling. My prototype consists of a netted(meshed) metal cylinder rotating horizontally about its axis with help of shaft and a pressurised air blown from above. The metal chips will be put inside netted cylinder...
  42. fluidistic

    I Impact of superconductivity on mechanical properties?

    It is often said that the mechanical properties of metals are mostly due to their free electrons. I'm talking about malleability, ductility and hardness. So, when they suffer a superconductive transition, I expect a drastic change in their mechanical properties, but I haven't found anything on...
  43. E

    Engineering How proficient do i need to be in CAD for a mechanical engineering internship?

    How proficient in cad should someone who is applying for mechanical engineering internship be? I am teaching myself solidworks and i would like to have a benchmark to progress towards so when I began applying for a mechanical engineering internship in the near future i will feel prepared.
  44. B

    Calculate the change in mechanical energy during collision

    Homework Statement A 15 kg block is attached to a very light horizontal spring of force constant 5000.0 N/m and is resting on a frictionless table. It is struck by a 3.00 kg stone at 8.00 m/s to the right, then rebounds at 2.00 m/s to the left. Homework Equations ΔE = ΔK + ΔU The Attempt at...
  45. Justin71

    Torque Calculation for Screw Ball: TL Preload Nut

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  46. T

    Where can I find educational mechanical engineering devices?

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  47. B

    Quantum mechanical integral equation problem

    Homework Statement The question is; for a qunatum mechanical particle, Ψ(x) = [1/(a1/2.π1/4)].[e-(x-xo)2/2a].[eip0x/h] in here, x0, p0 and h are constants, so, Homework Equations what are the <x>; expetation value, and <P>;expectation value of momentum ? The Attempt at a Solution , [/B]...
  48. B

    A Quantum mechanical integral equation problem

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  49. Roy S Ramirez

    How many O-rings would a mechanical engineer use here?

    Hello everybody! Happy 2019! I'm trying to design a mechanical face seal for the part shown below, and I'm struggling with the number of o-rings I'm supposed to use. There are two cavities (rings) for two different fluids. The liquid dynamic pressure for both the internal and external fluids is...
  50. lia256

    Mechanical Resonance Lab Questions

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