Heat-induced Vibration Analysis of Annular Deployable Antenna Truss with Bennett Mechanism Configuration
Satellites will frequently enter and leave the shadow area of the earth during operation,and the antenna truss will produce heat-induced vibration responses under the alternative influence of solar thermal radiation and non-radiation,which will affect the accuracy and life of the antenna.In order to improve the stability of the antenna,the loop antenna truss was constructed with the use of the substitution configuration of Bennett mechanism,and the finite element model was estab-lished to calculate its transient temperature field under the condition of sudden heating load,and the heat-induced vibration response under the heating loads.The results were compared with those of the conventional diagonal telescopic ring truss.It is shown that,compared with the traditional diagonal telescopic ring truss,the vibration amplitude of the Bennett alternative configuration ring truss is significantly reduced under the thermal load,which demonstrates a good stability.
vibration and waveBennett mechanism substitution configurationexpandable antennafinite element analysisindirect couplingheat-induced vibration
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