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Basic Thermal Analysis Using TMG in FEMAP

This video demonstrate Basic Thermal Analysis Using TMG in FEMAP.

  • Open the existing .modfem file, which has got two predefined materials.
  • Define a isotropic material property called Ceramic, with a thermal conductivity of 4.5 W/m-K, a specific heat of 540 J/kg-K, and a density of 4500 kg/m3.
  • Import the existing geometry file and click OK on Solid Model Read Options.
  • Set element size for all solids to 0.025 in mesh control – size on solid command.
  • Create three solid properties matching the materials which are used in this model.
  • Use the mesh tools available in the mesh toolbar to mesh the solids with respective material property.
  • Display the mesh color by property, this helps to verify the correct properties are applied to the model.
  • With a meshed model you can create groups that will ease the selection of entities for boundary conditions.
  • You will create different types of thermal couplings to connect the components of the assembly using TMG panel.
  • Use Join type thermal coupling to model the contact between the shaft and the rim.
  • For second thermal coupling define a Resistance type thermal coupling of 0.5 W/C between tire and rim.
  • For the third thermal coupling define a heat transfer coefficient of 2000 W/m2 K between pad side and rim.
  • Define a heat load of 1000 W on the external face of the brake pad.
  • Model convection explicitly on the external faces of the brake assembly.
  • Define a convection coefficient of 20 W/m2 K with an environment temperature of 25 C.
  • Model convection explicitly on the cooled internal faces of the brake assembly.
  • Define a convection coefficient of 200 W/m2 K with an environment temperature of 25 C.
  • Use the FE Study to set a working folder for the solution of the steady state brake model and solve the model.
  • Use Get Results from the TMG panel to load the results and reload the model to ensure results are loaded.
  • Click on contour icon to display the temperatures of the brake assembly model.
  • Analyze the temperature distribution of each component of the brake assembly model.

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