Svitlychnyi S. Models of soft body impact on the target and the results of their analysis

The object of research - the processes of soft body-to-aircraft engine blade contact interaction. The goal – reduction of the time and costs of the birdstrike resistance tests of aircraft engine blades using mathematical modeling tools for simulation of soft body-to-aircraft engine contact interaction. The methods – numerical simulation methods, theory of elasticity and plasticity methods; hydrody-namic methods, finite element and finite difference methods, smoothed particles hydrodynamic method, which are used in LS-DYNA program. The results – a hybrid model for numerical analysis of a titanium alloy blade respond in case of a soft body impact is devel-oped. Soft body-to-aircraft engine blade contact interaction simulation technique is further developed. Identification technique of nu-merical model is enhanced by reducing the number of input parameters. Practical recommendations for selection of input parameters are given. Introduced at the State Enterprise «ANTONOV», Kiev, a method for determining the loads resulting from the collision of a bird with the aircraft structural elements was introduced into the practice of designing bird-resistant aircraft structural elements.