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| Multiaxial Vibration Security and Validity Verification of Connecting Pieces in Typical Section |
| WANG Zhaoxi， SHENG Peng， LI Yunyun， WU Xinkai， HUANG Yuejin |
| Shanghai Spaceflight Precision Machinery Institute， Shanghai 201600， China |
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Abstract This paper evaluates the security and validity of triaxial vibration test for the connecting pieces in the typical section, for example, standard parts and connectors, etc. Through the impacting analysis and simulation analysis about the failure mode, the failure mechanism of all kinds of connecting pieces in the section during triaxial vibration, and the stress distribution of loose failure, strength failure and fatigue failure are obtained, which provide a foundation for the analysis of triaxial vibration and defects implant. Then, the composite clipping spectrum is obtained by analyzing the section’s triaxial vibration from three aspects of stress, acceleration and fatigue failure. The paper analyzes the security of the composite clipping spectrum and the validity of triaxial vibration. Finally, the composite clipping spectrum is validated effectively and could motivate the potential faults of the connecting pieces, at the same time, the triaxial vibration could increase the test efficiency and reduce the test period, comparing to the uni-axial vibration.
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Received: 29 June 2022
Published: 31 March 2023
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2023, Vol. 6 
