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首页> 外文会议>DSC-vol.73-1; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition pt.A; 20041113-19; Anaheim,CA(US) >MODAL ANALYSIS OF AN ULTRA-FLEXIBLE, SELF-RIGIDIZING TOROIDAL SATELLITE COMPONENT
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MODAL ANALYSIS OF AN ULTRA-FLEXIBLE, SELF-RIGIDIZING TOROIDAL SATELLITE COMPONENT

机译：超柔韧自刚性环形卫星组件的模态分析

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摘要

Over the past few years, much research has been performed on understanding the dynamics of an ultra-large, flexible toroidal satellite component subject to an internal pressure. However, the harsh environment of space is no place for inflated, membrane-like materials for fear of micro meteorite bombardment and subsequent puncture. Addressing this issue directly, United Applied Technologies (Huntsville, AL) has developed a novel, thin film casting approach to create a self-rigidizing torus. Once inflated, the torus structure is able to support its own shape, thus eliminating the need for any internal pressure. The self-rigidizing torus is extremely flexible, much more so than its pressurized predecessors. Such compliancy makes modal testing extremely difficult. However, through careful application of traditional modal testing techniques (shaker and accelerometer testing), the damped natural frequencies and mode shapes of the self-rigidizing torus can be discerned in the frequency bandwidth of interest, 1-12 Hz.
机译：在过去的几年中，已经进行了很多研究来了解承受内部压力的超大型柔性环形卫星组件的动力学。但是，由于担心微陨石轰击和随后的刺穿，膨胀的膜状材料无处不在恶劣的太空环境中。联合应用技术公司（AL，Huntsville，AL）直接解决了这个问题，开发了一种新颖的薄膜流延方法来创建自刚性环面。充气后，环形结构便能够支撑其自身的形状，从而消除了对内部压力的需求。自刚性环面具有极高的灵活性，比其受压前身要灵活得多。这样的顺从性使得模态测试极其困难。但是，通过仔细应用传统的模态测试技术（振动器和加速计测试），可以在感兴趣的频率带宽1-12 Hz中识别出自硬环的阻尼固有频率和模态。

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