Transient Thermoelastic Analysis and 3 Dimensional Stress Analysis of Carbon/Carbon Brake Disks

탄소/탄소 브레이크 디스크의 과도기 열탄성 해석과 3차원 응력해석

  • 오세희 (한국과학기술원 항공우주공학과) ;
  • 유재석 (한국과학기술원 항공우주공학과) ;
  • 김천곤 (한국과학기술원 항공우주공학과) ;
  • 홍창선 (한국과학기술원 항공우주공학과) ;
  • 김광수 (한국항공우주산업)
  • Published : 2000.11.01


This paper presents the thermoelastic analysis and 3-D failure analysis of the carbon/carbon brake disk. The mechanical properties of the carbon/carbon brake disk were measured for both in-plane and out of plane directions. The mechanical properties were used as the input of the thermoelastic analysis and 3-D stress analysis for the brake disk. The gap between rotor clip and clip retainer was an important parameter in the loading transfer mechanism of the rotor. The change of gap was considered separating the mechanical deformation and thermal deformation. Because the rotor clip and clip retainers were not contacted, the clip retainers and rivets were excluded from the rotor analysis model. The disk was modeled by using the cyclic symmetry condition and the contact problem between the rotor disk and rotor clip was considered. From the results of the 3-D stress analysis, the stress concentration at the key hole of the brake disk was confirmed.