Creep Response of Rotating Composite Discs having Exponential Hyperbolic Linear and Constant Thickness Profiles

  • Rajinder Singh Department of Mechanical Engineering, Punjabi University, Patiala - 147 002
  • Ravindra K. Saxena Sant Longowal Institute of Engineering and Technology, Longowal, Sangrur - 148 106
  • Kishore Khanna Department of Mechanical Engineering, Thapar Institute of Engineering & Technology, Patiala - 147 004
  • V. K. Gupta Department of Mechanical Engineering, Punjabi University, Patiala - 147 002
Keywords: Rotating disc, Aluminium composites, Variable thickness, Strain rates, Creep modelling


The study compares the steady state creep response of rotating Al-SiC discs having constant, linear, hyperbolic and exponential thickness with different thickness profiles. All the discs are assumed to have equal volume with the same average thickness. The creep behaviour of the disc material is described by threshold stress based law while the yielding is assumed to follow Tresca criterion. The variable thickness disc is observed to have superior creep response, expressed in terms of stresses and strain rates, to a constant thickness disc. Amongst variable thickness discs, the creep response is observed to be superior for linear thickness disc, when the inner thickness of all the discs is kept the same. However, for the same outer thickness, the disc having hyperbolic thickness profile exhibits the best creep response.


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How to Cite
Singh, R., Saxena, R., Khanna, K., & Gupta, V. (2020). Creep Response of Rotating Composite Discs having Exponential Hyperbolic Linear and Constant Thickness Profiles. Defence Science Journal, 70(3), 292-298.
Materials Science & Metallurgy