열-구조 안정성을 고려한 비공기압 타이어 격자구조 설계 최적화: 킥 스쿠터용 타이어의 적용 연구

Abstract

This study aims to optimize the design of lattice structures for kick scooter airless tires in order to address thermal deformation and improve structural stability. Thermal-structural analysis was used to analyze nine models using thermoplastic polyurethane(TPU) with varying support configurations. Among the models, the honeycomb structure with four hoop pipe supporters demonstrated superior performance. Performance factors for optimizing the kick scooter airless tire lattice structure were derived using an inscribed central composite design. In addition, the surrogate model was generated using the response surface method. Multi-objective optimization was performed using the non-dominated sorting genetic algorithm II to minimize weight and maximize stiffness while satisfying constraints on stress, contact pressure uniformity, and natural frequency. As a result, Opt.2 of the Pareto chart satisfied the constraint functions, with the objective function of weight increasing by 34 % due to the hoop pipe supporters. Nevertheless, the objective function of stiffness increased by 99 %, and it was selected for its effective weight-stiffness balance