Моделі взаємодії м'якого тіла з перешкодою і результати їх дослідження

Abstract

Sergey P. Svetlichniy. Models of soft body interaction with a target and the results of their analysis. – Qualification scientific paper, manuscript. Thesis for candidate degree in Technical Science: speciality 01.05.02 – mathematical modeling and computational methods. – National aerospace university named after N. E. Zhukovskiy “Kharkiv Aviation Institute”; V. N. Karazin Kharkiv National University, the Ministry of Education and Science of Ukraine, Kharkiv, 2019.

In the thesis, for the first time, there has been developed and scientifically proved a hybrid model of contact interaction between soft body and aircraft engine blade. The model is used for multipurpose analysis of the influence of the blade design parameters on their reaction in case of soft body impact of different mass, with different speeds and at different angles. The model was verified by comparing the results of numerical simulation with the test results. The model allows to determine the loads acting on the blade without carrying out a full-scale experiment, which significantly simplifies, speeds up and reduces the costs of testing the blades for bird resistance. The simulation technique of soft body to engine blade interaction was further developed. The method differs from the existing ones by using smoothed particles method for discretization of the soft body, which allows to eliminate the problems of numerical instability and expand the scope of simulation and analysis of mechanical processes accompanying the impact.