Abstract
Stress-strain analysis of railway using computer simulation and full-wave modeling of ultrasonic non-destructive testing require significant computing resources. In addition to this, the complex shape of the rail can be noted. The use of computational Chimera grids might be a solution to this problem, because it reduces the amount of computing resources. The background computational grids are structured grids with a constant coordinate step, and the Chimera curvilinear structured grid is a thin layer surrounding the outer boundary of the rail and accurately describing its shape. Interpolation is performed between different types of computational grids. The process of interpolation by points of a quadrangle of an arbitrary shape is considered in detail in this work. We used the grid-characteristic numerical method on structured curvilinear and regular grids, respectively, to carry out the calculations. The results of simulation the propagation of ultrasonic waves in a rail are presented in the work.
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Acknowledgements
This work has been performed with the financial support of the Russian Science Foundation (project No. 20-71-10028).
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Favorskaya, A.V., Khokhlov, N. (2022). Using Chimera Grids to Describe Boundaries of Complex Shape. In: Czarnowski, I., Howlett, R.J., Jain, L.C. (eds) Intelligent Decision Technologies. Smart Innovation, Systems and Technologies, vol 309. Springer, Singapore. https://doi.org/10.1007/978-981-19-3444-5_22
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