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笨重的金属拉杆部件与轨道交通轻量化发展目标不符,文章提出拉杆部件实现轻量化设计技术的基本方法,即轻量化设计的基本准则,轻量化设计的结构优化和轻量化材料的评判标准。分析与试验验证表明,研发的这一款以塑代钢的拉杆产品,采用轻量化的聚酰胺PA66特种配方材料,产品减重25%,比强度提高40%,而疲劳特性与原产品基本保持一致。
The bulky metal rod components are inconsistent with the goal of lightweight development of rail transit. The paper presents the basic methods of lightweight design of the rod components, that is, the basic principles of lightweight design, the structural optimization of lightweight design and the evaluation criteria of lightweight materials. Analysis and experimental verification show that the developed rod-shaped product with plasticized steel is made of light-weight polyamide PA66 special formula material, which has a weight reduction of 25% and a specific strength of 40%, while the fatigue characteristics and the basic maintenance of the original product Consistent.