disc brake analysis

hello everyone,

i have carried out a coupled thermal mechanical analysis of disc brake in which am working on the temperature distribution over the disc and the brake pads. my analysis works well but the main problem is with the results.

i get an error message
"There is zero HEAT FLUX everywhere in the model based on the default criterion. please check the value of the average HEAT FLUX during the current iteration to verify that the HEAT FLUX is small enough to be treated as zero. if not, please use the solution controls to reset the criterion for zero HEAT FLUX"

i have set the initial temperature of the entire model as 20 deg celcius. i really dont know whats going wrong with the temperature analysis as am getting results the stress distribution but not for temperature distribution.

really need some urgent suggestions for this one.

thanking you.

rohan