Http://www.peterverdonedesigns.com/files/hydraulic%20system%20theory.pdf HIDRÁULICA http://es.wikipedia.org/wiki/Hidraulica http://www.engineeringtoolbox.com/bernouilli-equation-d_183.html.

Download Http://www.peterverdonedesigns.com/files/hydraulic%20system%20theory.pdf HIDRÁULICA http://es.wikipedia.org/wiki/Hidraulica http://www.engineeringtoolbox.com/bernouilli-equation-d_183.html.

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  • http://www.peterverdonedesigns.com/files/hydraulic%20system%20theory.pdf

    HIDRULICAhttp://es.wikipedia.org/wiki/Hidraulica

    http://www.engineeringtoolbox.com/bernouilli-equation-d_183.html

  • FLUIDOLQUIDONo se comprime bajo presinAdquiere la forma del contenedor.Buscar una situacin de equilibrio.GASSe comprime al someterle a presinESTTICO(no fluye)DINMICO(Flujo)

  • PROPIEDADESDENSIDADPRESIN DE VAPORVISCOSIDADPUNTO DE FLUIDEZCAPACIDAD DE LUBRICACINRESISTENCIA A LA OXIDACIN

  • PRINCIPIO DE PASCALLa presin aplicada a un fluido confinado se transmite ntegramente en todas las direcciones y ejerce fuerzas iguales sobre reas iguales, actuando estas fuerzas normalmente a las paredes del recipiente

  • Ecuacin de Bernouilli

    En un fluido ideal (sin viscosidad ni rozamiento) en rgimen de circulacin por un conducto cerrado, su energa permanece constante a lo largo de su recorrido. La energa de un fluido en cualquier momento consta de tres componentes:Cintico: es la energa debida a la velocidad que posea el fluido.Potencial gravitacional: es la energa debido a la altitud que un fluido posea.Energa de flujo: es la energa que un fluido contiene debido a la presin que posee. v2/2 + P/ + g.h = constantev = velocidad fluidoP = presin (en un punto) = densidadg = gravedadh = alturaEnerga cintica + presin + potencial gravitacional = Constante

  • Ley de continuidadImagine a hose pipe.

    The amount of water entering it must the same as the amount leaving it. To keep this true, if the hose become narrower the water must speed up.

    Input area x velocity = output area x velocityTherefore as the area decreases the velocity increases.

  • Law of continuity Applying Bertoullis Law

    v2/2 + P/ + g.h = constant

    Where + g.h are constant in both casesv2/2 + P (input) = v2/2 + P (output)

    Therefore where velocity increases, P (pressure at a point) must decrease. Ie. When the area is smaller.

  • v = flow speedP = pressure = densityg = gravityh = height = .g

    v2/2 + P/ + g.h = constant v2/2.g + P/ + h = constant (1)Head of Flow (divide by gravity).v2/2 = PdDynamic Pressure.v2/2 + P1 = .v2/2 + P2 = constant Dynamic Pressure + static pressure is constant

  • Simple hydraulic systemStatic Pressure (P)= pressure at a certain point in a liquid. It is the force per unit area applied in a directin perpendicular to the surface of an object. N/m2

    Pressure = Force/ AreaSI Units = Newtons/meter2SI Units = PascalForce = Pressure X AreaHydraulic systems can be used to gain mechanical advantage. i.e do work.

    Apply piston (input)OutputpistonPressure applied to an ideal liquid is tranmitted through it in all directions equally.

  • Simple hydraulic systemForce = pressure x surface area

    Pressure in this system = 100Pascal

    Force on APPLY piston = 100pascal x 1m2 = 100NForce on OUTPUT piston = 100pascal x 4m2 = 400N

    APPLY PISTONOUTPUT PISTON

  • transmission fluid pump lines control valve(s) reservoir or sumpOutput device or actuator

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