|
|
This is only a preview of the paper
Click here to register and get the full text.
Existing members click here to login
|
|
|
The main purpose of this project is to study the friction brake of a vehicle, and used the Finite Element Analysis (FEM) to produce a model of the brake pad and disc rotor by using finite element software. ... By using the software, the models and simulation of the hotspot formation and stress on the brake pad and disc brake will be defined. Through this modeling and simulation, the behavior of hotspot and its effect on the temperature distribution on the brake pad rubbing surface and disc rotor has been investigated. ... How effectively this is achieved depends on the type of braking system. ... Disc brakes use a clamping action to produce friction between the ˇ°rotorˇ± and the ˇ°padsˇ± mounted in the ˇ°caliperˇ± attached to the suspension members. This contact causes friction, which changes kinetic energy into heat energy. ... The pads then rub against the rotor, slowing the vehicle in the shortest possible distance. ... The braking system can exert thousands of pounds of pressure on each of the four brakes. ... Floating caliper and fixed cylinder
Floating caliper and fixed cylinder
This design of disc brake represent something of a compromise between the fixed and floating caliper constructions, because although it is basically a sliding caliper type it retains the easy pad replacement of the fixed caliper. ... One of which acts directly on the inboard pad and the other indirectly in the outboard pad via the sliding yoke. It should be noted that the latter is also responsible for transmitting the drag force on the outboard pad to the cylinder body and mounting.
Finite element method
The finite element method is a numerical procedure that can be applied to obtain solutions to a variety of problems in engineering. Steady, transient, linear, or nonlinear problems in stress analysis, heat transfer, fluid flow, and electromagnetism problems may be analyzed with finite element methods [14].
The basic steps involved in any finite element analysis consist of the following:
Experimental
This experiment showed that the effect of brake cylinder diameter on passenger vehicle stopping distance was assessed by simulating a test of stopping distance (FMVSS 105) for a 1996 Ford Explorer, 2-door MPV (HS # 632072). ... The program EDVSM was used for this simulation. ... Although FMVSS 105 specifies standards and procedures for repetitive as well as single effectiveness braking, the simulation of wear and fatigue is not incorporated into the Brake Designer model. Initial conditions and driver controls from an average of six actual tests were input into the simulation model (initial condition table 3. ... Then released its braking load, it took around 20 seconds that the rotor cool down. Then next braking load was applied again. ... This pedal force repeated until 300 second, at which point the simulation terminated. ...
Thermal conduction and convection were the only two modes of heat transfer considered in the analysis. ... Surface interfaces (identified with the letter ˇ°Aˇ±) were defined between adjacent components and assigned thermal contact resistance values. ... The maximum temperature located at this model with number element of 8878. This graph shows that the maximum temperature of this element increased rapidly during applying heat load to FEM. On the other hand, that mean the maximum friction force was defined on element 8878.
Approximate Word count = 2613
Approximate Pages = 10.5
(250 words per page double spaced)
|
|
|
|
|
|