Transactions of Nanjing University of Aeronautics & Astronautics
Multidisciplinary Design Optimization of Crash Box with Negative Poisson’s Ratio Structure
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Abstract:
To improve the crashworthiness and energy absorption performance， a novel crash box negative Poisson’s ratio （NPR） structure is proposed according to the characteristics of low speed collision of bumper system. Taking the peak collision force and the average collision force as two subsystems， a multidisciplinary collaborative optimization design is carried out， and its optimization results are compared with the ones optimized by NSGA-II algorithm. Simulation results show that the crashworthiness and energy absorption performance of the novel crash box is improved effectively based on the multidisciplinary optimization method.
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Clc Number:
U463.8
CHINA AERO-SCIENCES
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