Optimization design of child seat based on chaotic mutation MOPSO
In order to improve the safety of child seats,a finite element model of a child safety seat is established,and LS-DYNA is used for crash simulation.The backrest inclination,headrest inclination,and seat belt center height are selected as design variables to establish response surface models.The application of chaotic mutation theory in particle swarm optimization(PSO)is proposed,and the optimal solution of child seat parameters is obtained by using the grouped MOPSO algorithm based on chaotic mutation.Finally,the optimal solution is used to carry out the simulation experiment again and compared with the original performance.The results show a significant improvement in the injury protection of all parts of the child.