What is Coupling: Definition and 385 Discussions

A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both. In a more general context, a coupling can also be a mechanical device that serves to connect the ends of adjacent parts or objects. Couplings do not normally allow disconnection of shafts during operation, however there are torque-limiting couplings which can slip or disconnect when some torque limit is exceeded. Selection, installation and maintenance of couplings can lead to reduced maintenance time and maintenance cost.

View More On Wikipedia.org
Recent contents Top users
  1. jal

    Coupling gauge theory to spinfoam 3d quantum gravity

    Marcus! Surely, I’m not the only one reading the links that you provide! http://arxiv.org/PS_cache/arxiv/pdf/0706/0706.1534v1.pdf Coupling gauge theory to spinfoam 3d quantum gravity Simone Speziale June 11, 2007 Note: The Acknowledgments: The author is particularly grateful to Carlo...
  2. S

    Mutual Inductive Coupling in Power Distribution Systems

    Hi, I’ve just been reading about the mutual inductance coupling that can exist between adjacent conductors in a 3-phase power distribution system. I’m hoping to clear something up in my mind, if we want to model the imposed mutual impedance, is it represented as impedance between the lines...
  3. R

    How Can I Solve My Antenna Coupling Problem?

    I am looking for some information on antenna coupling. I am looking at coupling energy from one transmitters antenna into another antenna. Basically instead of using the antenna on the transmitter itself, I need to use the second antenna. This is for a project at work. I designed a second...
  4. P

    Understanding Optical Coupling: A Key Concept in Modern Optics

    What is "optical coupling" ?? This may problem may sound stupied, but what is "optical coupling" ?? I did surf the net to find some information, but I can't find the definition of optical coupling, and I can't even find it in "Encyclopedia of Modern Optics". Could someone please tell...
  5. P

    Evanescent Wave Coupling & Quantum Tunneling

    Hi, this is my first post here so apologies for any faux-pas I inadvertly do. Anyways, to the subject at hand. Evanescent Wave Coupling -> abbrv. -> EWC Can someone explain to me evanescent (decaying) waves work? I have been reading a wiki article about EWC, and it made many...
  6. U

    Angular momentum coupling - worked out examples?

    3j, 6j, 9j -symbols, Wigner-Eckart theorem, reducible matrix element, irreducible (spherical) tensor. I just cannot understand the notation. I just cannot fully understand the physics behind those concepts. Where can I find fully worked out example calculations? Especially, the notation is...
  7. O

    Materials and particle coupling

    Hi, since I don't have exact knowledge about materials and particle coupling, I want to ask for result of simple experiment: imagine you have very tough stick 10 meters long. Let's say the stick is fitted on firm steel table in sliding blocks. Table is equipped with actuator strong enough...
  8. 8

    What is the tension in the coupling

    An inter city Express locomotive pulls 14 cars, each with a mass of 53,000 kg. What is the tension in the coupling between the thrid and fourth cars when the acceleration of the train is 0.26m/s. ok so I am looking for T. F=ma 53000(0.26) = T? i don't think this is correct because they...
  9. S

    One-to-one coupling of glacial climate variability in Greenland and Antarctica

    Here is the abstract. And here is a related article. With the arctic ice melting, should we expect a weakening of the warm northerly flow? Since we are in the midst of a giant atmospheric experiment, with the only currently habitable planet that we have, I wonder how much understanding...
  10. O

    Tension in the coupling between the locomotive and the first car

    A 97 250kg train pulls two freight cars. The first car has a mass of 51 355 kg and the second has a mass of 18 400 kg. The whole train accelerates at .01750m/s^2. What is the tension in the coupling between the locomotive and the first car? A. I used Ft=ma and took (51355)(.1750)= 8987.1 N...
  11. E

    Stern-Gerlach Experiment: Spin Orbit Coupling

    Hi, We're looking at the consequences of the Stern-Gerlach experiment which has lead us to the idea of spin orbit coupling in the hydrogen atom. In class, the coupling term of the Hamiltonian was derived by assuming the electron has a magnetic moment, then viewing the hydrogen atom in the...
  12. E

    Asking about the coupling systems for the pump - electrical motor

    I have a glue pump system need to operate it by an electrical motor , so don't know how to choose the coupling designation ... may be there are some designation tables or other websites helping for that thing . also if there are some EQUATIONS , about that to depend on . with my best wishes
  13. L

    Challenging QM problem on coupling two 2-level systems with dipole moments

    Hey! My teacher gave me a very challenging problem on QM. I've only had one introductiary course, but he said he wanted me to figure this problem out by using whatever resources, so now I turn to you guys ;-). The problem is the following: London attraction forces can be thought of as...
  14. S

    Spin Orbit Coupling: Commutation Relations?

    I'm a little confused as to whether the following commutation relations still hold when spin orbit coupling occurs: [Sx,Lx] = 0 [Sx,Ly] = 0 [S^2, Lx] = 0 [L^2, Sx] = 0 etc. thanks very much for your help
  15. wolram

    Exploring the Weak Coupling Between Matter & Space Time

    I have read that, on the scale of clusters (million light years) the effect of the expansion of the universe is 10 million times smaller than the gravity binding the cluster. So space time, (flows) through the cluster (like a super fluid) or akin to a group of logs staying in a fixed...
  16. A

    Spin-Orbit Coupling: Positive & Negative Signs Explained

    why does spin-orbit coupling have a positive and negative sign?
  17. S

    EM Waves: Source & Coupling - My Little Doubt

    I have a little doubt. EM waves are coupled electric and magentic oscillations. But, to produce an electric field you need a charge and for a magnetic field, you need a moving charge ,but,electric field doesnot exist with a moving charge. So, what is the source of Em waves and moreover how...
  18. A

    Textbook defines coupling capacitor

    textbook defines "coupling capacitor" just curious... my textbook defines "coupling capacitor" as "ideally appears as an open to dc and as a short to ac." but what does that have to do with "couple" in the english sense? i'm not an electronics major, but I'm taking a course in electric...
  19. T

    Coupling between tuned circuits

    Hello I have two resonant circuits (tuned to the same frequency) that are magnetically coupled to each other via two coils placed parallel to each other. (energy and data is transferred from one circuit to another) Now, I know that the coupling between the two can be overcoupled...
  20. S

    Learning About Air Coupling in Shafts - Diagrams Welcome!

    I am trying to learn more about air coupling. That is the coupling between 2 shafts I am having a hard time finding any information on the subject matter does anyone know how these systems work and have any diagrams? thanks
  21. R

    Coupling of energy/matter to spacetime

    I have read papers regarding mechanisms responsible for maintaining the compactness of the extra dimensions and also read papers regarding how the 3 large dimensions became large. Mechanisms include: 1) Casimir Energy 2) Strings winding around the compact toroidal directions. Could...
  22. L

    What is the physical mass and coupling?

    I have a very basic question about exactly how to match the experimentally measured masses and coupling constants to the parameters in the lagrangian density in a given QFT. Let me specialize to a particular theory and perhaps people here can help me out. I've just computed the tadpole and...
  23. J

    What Are the Degrees of Freedom for a Massive Spin 1 Particle?

    I was wondering if anyone has any insights or can guide me to some decent literature of the coupling of the graviton to mass. I became intrigued about this when thinking about presenting the gravitational interaction in a Feynman diagram. If anyone has any ideas or knows I would greatly...
  24. O

    LS Coupling Scheme Explained - Get Help Now

    can anyone explain to me how the LS coupling scheme work? thanks
  25. S

    Determining Ground State in L-S Coupling Scheme for (3d)4

    When doing L-S coupling scheme for (3d)4, I am asked to find the ground state. I know that the first step, according to Hund's rules, is to find the the S with the largest value (S, L are total values, s, l are individual values). It is obviously S=2. Next, I should proceed to find the largest...
  26. Q

    Antiferromagnetic/ferromagnetic coupling

    What is antiferromagnetic/ferromagnetic coupling, and what is the difference between the two? I'm referring to coupling between two two-level half-flux quantum systems for example.
  27. R

    Is Electron Mass Linked to the Coupling Constant in Quantum Field Theory?

    In Bohr's model of hydrogen atoms, a 1s electron would orbit the proton quicker than a 2s electron.If we slowed down the 1s electron slightly we would normally expect it to spiral towards the proton.But not if we could decrease the force acting on the slower moving electron.If the electric...
  28. G

    What are Better Coupling Reagents for Reacting an Amine with a Carboxylic Acid?

    I'm trying to find a coupling reagent for reacting an amine with a carboxylic acid. Currently I am using TBTU with fenchyl amine hydrochloride, but the amine seems not to want to react witht the carboxylic acid. Are there some better coupling reagents than TBTU out there that anyone knows of?
  29. K

    Strong Coupling Constant: E, Quark, Unification

    The strong coupling constant is given by a (E)= 12 PI/ (33 - 2NF) H [E^2 / LAMBDA^2 nf = number of quarks in pair production. Three questions: What is E the energy of? If there were more than six quarks how would this affect the strong coupling constant? If forces can be unified why...
  30. suyver

    Can I Couple Angular Momenta Into One Big One?

    I have three angular momenta l_1,l_2,l_3 which I want to couple into one big one: L\equiv l_1+l_2+l_3. Can I just do this by coupling l_1,l_2 into L' and then couple L',l_3 into L? I would guess that I could equally couple l_2,l_3 into L' and then couple l_1,L' into L and this would...
  31. arivero

    Update on the nucleus-massive mesons coupling.

    Last december I was asking for the possibility to couple the highest massive bosons to the nucleus. I was aiming for some kind of many body effect to give relevance to the total mass of the nucleus, besides the one of the independent nucleon. To get this, one expects the contribution of more...
  32. O

    Viscous Coupling operating dynamics?

    I am looking for detailed information about the operating dynamics of viscous couplings. When I search on the web, all I end up with is automotive sites that are selling them, telling you how to diagnose/repair them or explain what they do in a car. I understand what they do. I understand...
  33. O

    Coupling Two Shafts to A+X RPM with Fluid Coupling

    Hi. I am trying to figure out how to couple two seperately driven shafts so that the speed of shaft B is always at X RPM greater than the speed of shaft A regardless of what speed A and B are driven at. (X is a constant, but the value depends on some still unfinished math, we will say 500 for...
  34. E

    Coupling constatn dimensions

    givne a theory with a given lagrangian..how do you obtain the dimension of coupling constatn?..in fact how do you know that for electromagnetism is g=1/137 or that for gravitation have units of m**-2? Can the coupling constant be rescaled to get always a dimensionless one?
  35. E

    Can the coupling constant change?

    In fact let,s supose we have a lagrangian of the type L=L0+gLInt where "g" is the coupling constant,..but unfortunately could happen that due to the dimension of g the theory would not be renormalizable... my question if that if there would be a chance of doing a canonical transformation...
Back
Top