THE DEFINITION OF STIFFNESS AND INERTIAL MASS CHARACTERISTICS OF AN ORTHOTROPIC SMOOTH SHELL BICONICAL MODEL OF A SECTION LEAF OF A HEAD FAIRING

Authors

  • А. С. Конюхов National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv, Ukraine

DOI:

https://doi.org/10.20535/2305-9001.2014.71.35453

Keywords:

rocket launcher, head fairing, dynamic analysis, biconical thin-walled shell, bulkhead, finite element method, stiffness, inertial-mass characteristics

Abstract

The description of the universal numerical method as the approximation of smooth membrane compartments for biconical head fairing rocket launchers. The “smoothing” technique is illustrated by the determination through the method of finite element of stiffness and inertial mass characteristics of an orthotropic smooth shell model of typical biconical section. The procedure for calculating the stiffness and inertial mass properties model smooth skin wafer supported by frames biconical section flap fairing uses the equivalent parameters of the fragments of the original object with an isotropic material and flat prototype analog with orthotropic material. resentation of the simulation model section head fairing rocket launchers of this type is focused on the use of two-dimensional shell and beam finite elements. The developed calculation method provides an efficient algorithm for the numerical data determination whilst creating a simulation of dynamic modeling of a thin-walled shell biconical wafer supported by massive frames for sections fairing rocket launchers.The material of construction of shells biconical sections flaps nosecone aluminum alloy AMr6M with known elastic and mass characteristics The practical application of the developed method was carried out for the amplitude-frequency analysis of the "Cyclone-4" rocket

References

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MSC/NASTRAN Advanced Dynamic Analysis, User’s guide, v70.

Published

2014-12-24

Issue

Section

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