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Simulate the thermo-mechanical regime for a brake mechanism

A 3D model of the disc and pads were made in the DiskBrake file (I only made the components forms). The disk is pressed from lateral sides by the brake pads. The brake pads are formed of two components tied each other – the pad (who enters in contact with the disc) and the back plate (which is pressed from outside with a pressure of 1(one) MPa.)

The brake process starts when the brake pads enter in contact with the disk (so they are pressed on the disc surface with the pressure mentioned earlier), so the frictional forces cause deceleration and heat.

The initial angular velocity of the disc is 92 rad/s and at the end of the process is 0 rad/s (see Table3). Total time for the friction process is about 4.72 seconds.

The disc is rotated so that the heat is generated by friction.

The problem is to obtain a thermal regime for two possibilities:

1st the brake process with no air flow;

2nd one by taking in count the air flow (the speed at the beginning of the process is 100 km/h (see table3)).

Table1. Material proprieties:

Disc Brake Pad Backplate

Density (kg/m3) 7050 2620 7887

Young’s Modulus (GPa) 116 1.25 210

Poisson’s Ratio 0.27 0.29 0.3

Conductivity (W/[url removed, login to view]) 533 2 32

Specific Heat (J/kg/oC) 103 1100 595

Table2. Friction coefficient variation:

Temperature of property measurement (°C) 100 200 300 400

Friction coefficient, 0.38 0.41 0.42 0.24

Table3. Angular velocity variation in time and with the car speed (total time for contact between plates and disc is 4.72 seconds)

V [km/h] tf [s] ω [rad/s]

100,00 0,00 92,28498

95,00 0,24 87,67073

90,00 0,47 83,05648

85,00 0,71 78,44223

80,00 0,94 73,82798

75,00 1,18 69,21373

70,00 1,42 64,59948

65,00 1,65 59,98523

60,00 1,89 55,37099

55,00 2,12 50,75674

50,00 2,36 46,14249

45,00 2,60 41,52824

40,00 2,83 36,91399

35,00 3,07 32,29974

30,00 3,30 27,68549

25,00 3,54 23,07124

20,00 3,78 18,457

15,00 4,01 13,84275

10,00 4,25 9,228498

5,00 4,48 4,614249

0,00 4,72 0

The initial temperature of both models is 20°C.

Hi,

I've edited a bit the project, please read on if you are still interested on working on it:

there are 6 types of disc brakes in the files attached to this mail. They were made in ACAD2008 (disc_brake.dwg or .dxf). One is with .dwg extension and the other one is with .dxf extension specially to be imported in ABAQUS as a sketch.

I need you to do a simulation of a thermo-mechanical regime for a brake mechanism.

The thing is that in ABAQUS’ manual you can find .inp files with examples of this kind of simulation but not taking count the air flow.

I’ve also attached an archive with articles with examples of this kind of simulation. (Articles with brake process.rar)

Please, see also the "Problem description.docx" file for more details.

Tkanks in advance!

Beceriler: CAD/CAM, Mühendislik, Makine Öğrenimi, Makine Mühendisliği

Daha fazlasını görün: simulate thermal disc brake, plate 3d model, m3 3d model, j cad, flow the one, flow problem, file cam, enter 3d model, engineering forms, c&m engineering, car.h, cam 3d model, cad 3d models, brake disc 3d model, back 3d model, 3d model surface 4, 3d model material, 3d model engineering, 3d cad models engineering, 3d cad engineering, total cad, m cad, velocity, tied, thermal

İşveren Hakkında:
( 0 değerlendirme ) Bucuresti, Romania

Proje NO: #704155

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Safaali

It is simple. I have many experiences in this fields of simulation of thermo-mechanical processes. I have M.Sc. at mecanical engineering. Also it is possible to optimize the geometry of the parts to experience the brak Daha fazlası

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bchandra1955

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aimanrashid

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Hello Sir, Can I do this using Nx Nastran? In this case, can you provide me the 3D model in another format (Catia, Solidworks, Solidedge)?

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cadmasterz

Hello Sir, We are working since 8 years,give me a chance. Regards,

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We can perform detailed dynamic nonlinear dynamics and stochastic mathematical-modelling simulation of Aerodynamic, Physical, Chemical, and Fluid-Dynamics/airflow for this project at a relatively low cost for what is o Daha fazlası

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