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Vibration Antiresonance Design for a Spacecraft Multifunctional Structure

机译：航天器多功能结构的振动反共振设计

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摘要

Spacecraft must withstand rigorous mechanical environment experiences such as acceleration, noise, vibration, and shock during the process of launching, satellite-vehicle separation, and so on. In this paper, a new spacecraft multifunctional structure concept designed by us is introduced. The multifunctional structure has the functions of not only load bearing, but also vibration reduction, energy source, thermal control, and so on, and we adopt a series of viscoelastic parts as connections between substructures. Especially in this paper, a vibration antiresonance design method is proposed to realize the vibration reduction. The complex zero-point equations of the vibration system are firstly established, and then the vibration antiresonance design for the system is achieved. For solving the difficulties due to viscoelastic characteristics of the connecting parts, we present the determining formulas to obtain the structural parameters, so that the complex zero-point equations can be satisfied. Numerical simulation and ground experiment demonstrate the correctness and effectiveness of the proposed method. This method can solve the structural vibration control problem under the function constraints of load bearing and energy supplying and will expand the performance of spacecraft functional modules.
机译：航天器必须承受严格的机械环境体验，例如在发射过程中，卫星与运载工具分离过程中的加速度，噪声，振动和冲击。本文介绍了我们设计的一种新的航天器多功能结构概念。多功能结构不仅具有承重功能，还具有减振，能源，热控制等功能，我们采用一系列粘弹性零件作为子结构之间的连接。特别是在本文中，提出了一种振动反共振设计方法来实现减振。首先建立振动系统的复零点方程，然后进行系统的振动反共振设计。为了解决连接件粘弹性特性带来的困难，我们提出了确定公式来获得结构参数，从而可以满足复杂的零点方程。数值模拟和地面实验证明了该方法的正确性和有效性。该方法可以解决承载力和能量供给功能约束下的结构振动控制问题，将扩展航天器功能模块的性能。

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  • 来源
    《Shock and vibration》 |2017年第5期|265-274|共10页
  • 作者

    Li Dong-Xu; Liu Wang; Hao Dong;

  • 作者单位

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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