The purpose of this paper is to present a study of elastoplastic deformation in an isotropic material disk with shaft subjected to variable density and load using Seth’s transition theory. This theory includes classical macroscopic solving problems in plasticity, creep and relaxation and assumes semi-empirical yield conditions. It has been observed that the values of angular speed decreased with increases in the values of the density parameter for an incompressible material. Radial stress has the maximum value at the internal surface of the rotating disk made of incompressible material (i.e., rubber) as compared to the compressible materials (i.e., saturated clay and copper).

中文翻译：

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轴承受载荷和密度变化的各向同性材料盘中的弹塑性变形

本文的目的是利用塞思（Seth）的过渡理论，研究轴在各向同性的材料盘中的弹塑性变形，该轴承受密度和载荷的变化。该理论包括可塑性，蠕变和松弛方面的经典宏观求解问题，并假设半经验屈服条件。已经观察到，对于不可压缩的材料，角速度的值随着密度参数的值的增加而减小。与不可压缩材料（即饱和粘土和铜）相比，径向应力在由不可压缩材料（即橡胶）制成的转盘内表面具有最大值。