The estimate of dynamic response of spacecraft and launcher fragmentation system components under impulsive loading

1Shulzhenko, MG, 1Zajtsev, BP, 1Gontarovskyi, PP, 1Protasova, TV, 2Batutina, TYa., 3Sheremet, IV
1A. N. Podgorny Institute for Mechanical Engineering Problems of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine
2Yangel Yuzhnoye State Design Office, Dnipropetrovsk, Ukraine
3Yuzhnoye State Design Office, Dnipropetrovsk, Ukraine
Kosm. nauka tehnol. 2015, 21 ;(1):15–19
Section: Spacecraft dynamics and control
Publication Language: Ukrainian

The calculation methods for transient vibrating process in components of spacecrafts fragmentation are described. The first method is based on the 3D model and direct numerical integration of finite difference equations without design constraints. The second method is based on the combination of the finite element method, where solution in circumferential direction is obtained as a form of finite Fourier series. It is oriented on constructions in the form of rotating bodies. The results of estimate of dynamic response of construction components under impulse loading, which is obtained by these methods and by the standard system, are presented. The impact of elastically inertial characteristics of measuring equipment elements on dynamic process parameters of these elements is estimated.

Keywords: construction, finite element method, impulse loading, three-dimensional model, transient process

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