Study of the Methods for Analyzing the Rigidity and Strength of an Elastic Ring and Its Mechanics Characteristics

The rigidity parameter of an elastic ring represents an important constant for analyzing the kinetic characteristics of a rotor system and designing its critical speed. Proceeding from the requirements for various analyses, the authors have studied a finite element method for analyzing the structural rigidity of the elastic ring. Through experimental tests and measurements, the feasibility and accuracy of the finite element method for calculating the supporting rigidity of the elastic ring have been verified. From the requirements for structural design, the authors have also studied the strength characteristics, summarizing the key parameters for structural design of the rigidity and strength of the elastic ring and their influencing laws, thereby providing a basis for the kinetic design of the elastic ring. The main parameters being considered in a rigidity design should include the number of bosses, wall thickness and width, while those in a strength design mainly involve the number of bosses, wall thickness and transition fillets.