Transcript hydraulics
“Biggie questions”
By Thomas K.
Introduction to Hydraulics
Hydraulics and hydraulic systems can be found almost everywhere. Hydraulics can be found at any construction site. Some machines that use hydraulics are bulldozers, fork lifts, and cranes. Hydraulics are used to lift cars so mechanics can work underneath them. Many elevators use the same operating technique. This website was created for a 9 th grade physics project.
Related Links
Table of Contents
Hydraulic Science
Hydraulic Vocabulary
Introduction to Hydraulic Science
Hydraulics is a type of science and engineering
that deals with mechanical properties of liquids
and gases. Hydraulics is part of the more general discipline of fluid power. Fluid mechanics provides the foundation for hydraulics, which focuses on engineering uses of fluid and gas properties. On the next slide I will show you a graph of 20 adult responses to the question, what is Hydraulics?
What is Hydraulics?
4 2 0 12 10 8 6 10 7 didn't know incorrect
Adult Responses
3 correct
Hydraulic Science Pascal’s Principle
The basic idea behind any hydraulic system is very simple:
force applied at one point is transmitted to another point
using and incompressible fluid, which is almost always going to be a type of oil. In some systems, such as brake systems in a car, multiply the process. A major part of hydraulics is
Changes in
pressure at any point in an enclosed fluid
at rest are transmitted undiminished to all points the fluid and act in all directions.
NEXT!
Pascal’s principle
Changes in
at any point in an enclosed fluid at rest are transmitted, without any decrease to
the fluid and act in all directions.
Hydraulic Science continued
The arrows point out where the hydraulic fluid is which is multiplying the
force exerted on it in order to
make the wheels raise and bounce.
NEXT!
Hydraulic Science
Whenever we change the pressure in one part of a fluid, this change is transmitted to other pars. If the pressure of city water is increased at the pumping station by 10 units of pressure, the pressure every where in the pipes of the connected system will be increased by 10 units of pressure when the water is not moving. Pascal ’ s principle applies to all fluids (gases and liquids). An example of Pascal ’ s principle for gases and liquids is the automobile lift seen in many service stations. Compressed air exerts pressure on the oil in an underground reservoir. The oil in turn transmits the pressure to a cylinder, which lifts the automobile. Because the small force is exerted over large area it produces a large force.
Contents
Hydraulic Vocabulary
Contents
Liquid - the state or phase in which matter takes the shape of its container & the molecules “slide” past each other.
Pascal’s principle - the change in pressure on one part of a confined fluid is = to the change in pressure on any other part of the confined fluid.
Force - the influence that produces a change in a physical quantity Pressure - the force applied to a unit area of surface QuickTime™ and a TIFF (Uncompressed) decompressor are needed to see this picture.
Wikipedia Hydraulics I used Wikipedia’s page on hydraulics for my science about how hydraulics function.
Ichiban Hydraulics I used Ichiban Hydraulics website for their detailed pictures and extensive picture index.
How Brakes Work
Related Links
I used How Stuff Works for their information on the functions of hydraulics and different uses of hydraulics Mrs. Peck’s Homepage Conceptual Physics I used a couple pages in our textbook (284 285) to research Pascal’s principle. “Biggie questions”