航天器
冲击波
物理
机械
休克(循环)
航空航天工程
材料科学
工程类
医学
内科学
作者
Yan Yang,Lei Zhu,Hao Zhou,Yang Jian-zhong,Xianping Wang,Yongquan Liu
出处
期刊:AIAA Journal
[American Institute of Aeronautics and Astronautics]
日期:2024-09-02
卷期号:: 1-11
摘要
A lightweight and compact structural solution for mechanical shock suppression in spacecraft, such as the hold-down and release apparatus of satellites, is a critical and thorny issue. In this work, a ring-shaped structure is introduced to isolate mechanical waves within cylindrical shells. The underlying mechanism is that the ring-shaped structure undergoes different forms of deformation to counteract different modes of incident waves. A subwavelength Mn-Cu alloy ring is designed as a shock wave barrier in a typical spacecraft hold-down and release apparatus structure with multimodal wave excitation. We experimentally reveal that the Mn-Cu alloy ring reduces the peak value of the acceleration frequency response by 53.4% within a wide frequency range from 1 to 10 kHz. Meanwhile, in the time domain, the instantaneous acceleration peak can be weakened by 37.9%. This work provides a new strategy for shock control of shell structures in aerospace engineering and related fields.
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