Complex modelling of the Tunguska catastrophe

The main results are related to the creation of a complex model for the flight stress-strain state and fracture of a meteoroid and the determination of the action of the shock waves system and radiation on the Earthʹs surface during the Tunguska cosmic (celestial) body event. The bodyʹs motion is accompanied by its strong deformations, ablation, radiation and fructure. The whole complex model of the flight and blast of TCB now includes several units. Numerical modelling of the bodyʹs flight, a stress-strain state inside the body, the time and place of the body fracture and the parameters of the crushed volume, an explosion like expansion during the final stage of the flight as well as calculation of the action of the shock waves system and the radiation on the Earth surface are mainly considered. A comparison of the results with data observed is also presented and conjectures concerning a plausible: nature of TCB are made.