Design and Simulation of Adiabatic–Damping Dual–Function Strut for LH 2 Storage Tank

Yinan Qiu, Jianwei Xiao, Xinglong Ma (), Yuanyuan Xu and Huifang Kang
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Yinan Qiu: State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing 100028, China
Jianwei Xiao: Beijing Institute of Aerospace Testing Technology, Beijing 100074, China
Xinglong Ma: School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Yuanyuan Xu: State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing 100028, China
Huifang Kang: School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

Energies, 2024, vol. 17, issue 14, 1-14

Abstract: In the process of the on–board transportation of liquid hydrogen storage and transportation tanks, apart from considering the support strength and adiabatic performance, it is imperative to take into account the vibration characteristics of the carrying platform. The present work introduces a versatile support structure comprising a damping module and a ball contact insulation structure, enabling effective isolation of external vibrations while simultaneously providing support and insulation. The first step involves describing the principle of a flexible support structure and designing the mechanical structure. Subsequently, a damping analysis is conducted based on dynamic theory to establish the relationship between the spring and damping. Finally, the structural parameters of the dual–function strut are determined, followed by simulation of heat transfer performance. The results demonstrate that the dual–function strut exhibits exceptional vibration damping performance by reducing the amplitude of external vibrations greater than 5 Hz to less than 6%. Moreover, owing to the compact linear diameter spring structure of the vibration damping module and its ball contact effect, the thermal resistance of the dual–function strut is significantly enhanced, resulting in a mere heat leakage of only 22 W/m 2 in a single rod section.

Keywords: dual–function strut; vibration attenuation; damping; heat insulation; LH 2 storage tank (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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