由于其轻量化的特点,复合材料夹层结构在航天、汽车和城市基础设施等方面得到了广泛的应用。针对夹层结构受到多载荷约束情况进行分析,运用拉格朗日乘数法对多载荷约束夹层结构进行轻量化设计;以电动汽车底盘甲板结构为对象,运用多载荷约束夹层结构轻量化设计方法对其进行轻量化研究。结果表明,在保证车辆稳定性的前提下,轻量化设计效果良好。 Due to its lightweight nature, composite sandwich structures have found wide applications in aerospace, automotive and urban infrastructure. Aiming at the multi-load restraint of sandwich structure, the Lagrange multiplier method is used to design lightweight multi-load restrained sandwich structure. Taking the chassis structure of EV as the object, the lightweight design method of multi-load restrained sandwich structure It conducts lightweight studies. The results show that under the premise of ensuring the stability of the vehicle, the lightweight design is effective.