Validating the New Equivalent Static Design Method of Spacecraft Structures in Random Vibration by Test

Abstract:

Random vibration is one of dynamic environments of spacecraft during launch. In engineering, design load was usually equivalent static load based on acceleration. A new equivalent static load based on strain or stress was presented by the writer. To validate the new equivalent static design method, random vibration test was designed including test article and test specification, and signal processing was in time domain; static test was designed to compare static yield strength and dynamic yield strength, and dynamic yield strength was 50% -80% higher than static yield strength; measured data in time domain was analyzed , and the equivalent static design of strain based on first passage model can be used to spacecraft structure design. And it will decrease the mass of spacecraft structure obviously.

• Periodical: Applied Mechanics and Materials (Volume 419)
• Pages: 464-469
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.419.464
• Online since: October 2013
• Authors: Yu Mei Zhang, Zeng Yao Han, Si Dian Shi, Li Meng Tan
• Keywords: Equivalent Static Load, Random Vibration, Random Vibration Test, Spacecraft

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