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首页> 外文会议>UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts III; Proceedings of SPIE-The International Society for Optical Engineering; vol.6687 >MEASUREMENT OF STRUCTURAL DAMPING IN THE BACKPLANE OF THE JAMES WEBB SPACE TELESCOPE
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MEASUREMENT OF STRUCTURAL DAMPING IN THE BACKPLANE OF THE JAMES WEBB SPACE TELESCOPE

机译：詹姆斯·韦伯空间望远镜背板中结构阻尼的测量

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摘要

After review of the results above, it is clear that the primary objective of the test has been achieved. At an average temperature of 35K, the damping of the BSTA assembly was measured as low as 0.017% critical for the bare structure, and with an attached harness as low as 0.033% critical.The basic modal behavior of the structure, through its first 4 fundamental modes, has also been characterized. Data taken in the cryogenic range can be used to tune finite element models and therefore reduce model uncertainty, perhaps provide additional insight into material characterization efforts, and lower overall uncertainty and risk as the JWST program moves forward.
机译：在查看了以上结果之后，很明显已经达到了测试的主要目的。在35K的平均温度下，测得的BSTA组件对裸露结构的阻尼低至0.017％临界，而所附加的线束的临界阻尼低至0.033％。基本模式，也已被表征。在低温范围内获取的数据可用于调整有限元模型，从而减少模型不确定性，也许可以进一步了解材料表征工作，并随着JWST计划的进行而降低总体不确定性和风险。

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