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<p>The stress-strain state of a solid-propellant rocket engine and its self-heating during transportation in a horizontal position are considered. The engine is modeled by a viscoelastic cylinder with a star-shaped through supported by an elastic sandwich shell. The engine is excited by a harmonic kinematic loading on a part of the side surface. The mechanical characteristics are determined by complex moduli that depend on temperature and vibration frequency. The problem is solved using stepwise integration over time, as well as the iteration method and the finite element method. The amplitude and temperature–frequency response of the engine, resonant vibration modes, and time dependencies of the current self-heating temperature are developed. The distributions of contact stresses at the fuel-housing interface are calculated. The dependence of the maximum volume temperature on the frequency and amplitude of the load is investigated. The durability of the engine is assessed with respect to the temperature criterion.</p>

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Vibrations and Dissipative Heating of Solid-Propellant Rocket Engines During Transportation in Horizontal Position

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • I. K. Senchenkov,
  • N. M. Maltseva,
  • V. G. Karnaukhov,
  • O. P. Chervinko

摘要

The stress-strain state of a solid-propellant rocket engine and its self-heating during transportation in a horizontal position are considered. The engine is modeled by a viscoelastic cylinder with a star-shaped through supported by an elastic sandwich shell. The engine is excited by a harmonic kinematic loading on a part of the side surface. The mechanical characteristics are determined by complex moduli that depend on temperature and vibration frequency. The problem is solved using stepwise integration over time, as well as the iteration method and the finite element method. The amplitude and temperature–frequency response of the engine, resonant vibration modes, and time dependencies of the current self-heating temperature are developed. The distributions of contact stresses at the fuel-housing interface are calculated. The dependence of the maximum volume temperature on the frequency and amplitude of the load is investigated. The durability of the engine is assessed with respect to the temperature criterion.