期刊论文

Leader-follower Joint Topological Optimization for the Crashworthiness of Energy Absorption and Re-direction Anti-collision Structure

Lei, Z.

中文

汽车工程

1000-680X

2019

41

11

1308-1312,1326

10.19562/j.chinasae.qcgc.2019.011.012

国家自然科学基金（51675059）资助；

本校为第一且通讯机构

传统的抗撞结构只需满足安全性指标要求,虽然它既要求碰撞最大加速度小,又要求结构最大变形量小,但可行域有交集。随着国家标准的完善,新增对刚度有极高要求的导向性指标,使同时满足安全性与导向性要求的可行域为空集,现有方法不能解决此问题。本文中提出一种吸能导向抗撞结构的主从关联耐撞性拓扑优化方法。首先,针对安全性指标,建立安全从属模型。然后,根据安全从属模型的传力路径,引入导向刚度补偿装置,将其与安全从属模型结合而建立了主模型并通过拓扑优化获取其拓扑构型。最后,利用实例验证了所提出方法的适用性,结果表明,车辆在25%重叠率碰撞中导向性优越,且在100%正面碰撞中吸能效果良好...

The traditional anti-collision structure only needs to meet the requirements of safety indicator, though which requires both peak collision acceleration and maximum deformation are small, the conflicting requirements has intersection set in feasible domain. With the perfection of national standards, the re-directive performance indicator newly added requires very high stiffness. As a result, the requirements on both safety and re-directive performance leads to an empty set in feasible domain, and this issue can't be solved by the existing metho...