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Kragujevac Journal of Science
2015, br. 37, str. 35-48
Creep behavior of rotating FGM disc with linear and hyperbolic thickness profiles
(naslov ne postoji na srpskom)
Dharmpal Deepaka, Manish Gargb, Gupta V.K.a
aDepartment of Mechanical Engineering, Punjabi University, Patiala, India
bDepartment of Physics, S.D. College, Barnala, Punjab, India

e-adresa: guptavk_70@yahoo.co.in
Ključne reči: modeling; creep; rotating disc; functionally graded material; thickness profile
Sažetak
(ne postoji na srpskom)
Mathematical model has been developed to investigate steady state creep in a variable thickness rotating disc made of functionally graded Al-SiCp. The SiCp content in the disc is assumed to decrease from the inner to outer radius. The creep behavior of the disc material is described by threshold stress based law with a stress exponent of 5. The stresses and strain rates in the disc are estimated by solving creep constitutive equations along with the equilibrium equation for a rotating disc. The stresses and strain rates have been estimated for similar FGM discs with three different thickness profiles i.e. constant thickness, linearly varying thickness and hyperbolic varying thickness. The FGM disc having hyperbolic thickness profile exhibits the lowest stresses and strain rates compared linear or constant thickness disc. The tangential and radial strain rates in FGM discs with linear and hyperbolic thickness profiles are respectively lower by about two and three orders of magnitude when compared to a constant thickness FGM disc. The FGM discs having linear and hyperbolic thickness profiles possess lesser chances of distortion due to relatively uniform distribution of radial strain rate.
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O članku

jezik rada: engleski
vrsta rada: neklasifikovan
DOI: 10.5937/KgJSci1537035D
objavljen u SCIndeksu: 15.12.2016.

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