Simulating the Contact Interaction of the Electromagnetic Accelerator Elements, Taking Into Account the Orthotropic Properties of Materials.

The problem of the contact interaction of the elements of the barrel of an electromagnetic accelerator is solved. A two-dimensional elastic approximation is used. The computational domain is a quarter of the cross-section and includes a rail, insulator, and load-bearing shell. To solve the problem, the two-level additive Schwarz method is used, with the help of which the problem in the entire domain is reduced to solving a number of local contact problems in the introduced subdomains. The results of three calculations are presented: in the first one, realistic orthotropic properties of materials are used, while in the other two, isotropic approximations are used (for the minimum and maximum values of Young's moduli). A comparative analysis of the stress-strain state of the accelerator barrel for each case is carried out. [ABSTRACT FROM AUTHOR]