Elastic, limit and decohesive carrying capacity of a rotating disk with jump-like nonhomogeneity (Q1087045)

For a rotating disk consisting of two parts of different perfectly elastic-plastic materials, the elastic and limit carrying capacity is determined. The Tresca-Guest yield condition is applied and cases of various arrangements of principal stresses, depending on material constants, are discussed. It turns out, that for some disks the continuous solution cannot be extended up to the moment of full plastification of a disk, without violating the boundary conditions. For such disks the maximum angular velocity, for which the continuous solution ceases to exist, called according to the author and \textit{M. Życzkowski} [Int. J. Solids Struct. 9, 85-98 (1973)] the decohesive carrying capacity, is calculated.