Reliability-based design of reflector antennas with integrated structural-electromagnetic analysis using adaptive kriging modeling

Reflector antennas have been widely used in various applications, such as telecommunication and radio astronomy. However, they suffer from electromagnetic (EM) performance degradation caused by structural uncertainties. In this study, a reliability-based design optimization (RBDO) method for reflect...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2021, 35(12), , pp.5601-5610
Main Authors: Hu, Naigang, Xu, Wanye
Format: Article
Language:English
Subjects:
Antennas
Computing costs
Constraint modelling
Control
Cost analysis
Design optimization
Dynamical Systems
Engineering
Industrial and Production Engineering
Material properties
Mechanical Engineering
Original Article
Performance degradation
Radio astronomy
Reflector antennas
Reliability analysis
Reliability engineering
Structural reliability
Uncertainty
Vibration
기계공학
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Summary:Reflector antennas have been widely used in various applications, such as telecommunication and radio astronomy. However, they suffer from electromagnetic (EM) performance degradation caused by structural uncertainties. In this study, a reliability-based design optimization (RBDO) method for reflector antennas that involves EM performance with adaptive kriging modeling is developed for the first time to the authors’ knowledge. An integrated structural-EM analysis procedure for antennas with material property uncertainties is introduced. Then, an adaptive kriging-based reliability analysis method is developed to alleviate the heavy computational costs. To improve kriging modeling efficiency, a priori knowledge of antennas is utilized to reduce the traditional initial sampling region. Finally, the RBDO problem is formulated as a double-loop process with a reliability index constraint. Simulation results show that the proposed method can significantly improve structural reliability with considerably less computational cost.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-021-1131-x