应用数学和力学2025，Vol.46Issue(5)：633-649,17.DOI:10.21656/1000-0887.450336
斜向低速冲击载荷下多边形旋转拼接折纸管耐撞性研究
Crashworthiness of Polygonal Rotary Splicing Origami Tubes Under Oblique Low-Speed Impact Loads
摘要
Abstract
To improve the crashworthiness of automotive collision energy absorption boxes under oblique im-pact loads,a new-type origami tube with a polygonal rotary splicing origami pattern was designed based on conventional square tubes.The drop hammer impact experiment and numerical simulation analysis were con-ducted to prove the excellent crashworthiness of the new-type origami tube compared with the conventional square tube under impact load,with a high-crashworthiness diamond pattern finally produced.Additionally,the effects of geometric parameters on the crashworthiness of the new-type origami tubes were studied at different impact angles.The numerical results show that,the changes of the crease height ratios,length ratios and width-to-thickness ratios of the origami tube significantly affect the crashworthiness,and lead to different de-formation modes.Under different impact angles,average force Fave and initial peak force Fmax of the new-type o-rigami tube gradually decrease with the increase of impact angle θ,but the decline trend of Fmax is more signifi-cant than that of Fave,and the origami tube still shows a relatively high crush load efficiency under different im-pact angles,to further verify that the polygonal rotary splicing origami tube has excellent oblique impact energy absorption performance.关键词
斜向冲击/薄壁结构/折纸设计/耐撞性Key words
oblique impact/thin-walled structure/origami design/crashworthiness分类
力学引用本文复制引用
滕晨皓,刘坤澎,宋志博,陈家玉,周才华,涂昕昊,朱冬妹..斜向低速冲击载荷下多边形旋转拼接折纸管耐撞性研究[J].应用数学和力学,2025,46(5):633-649,17.基金项目
国家自然科学基金(面上项目)(12472378) （面上项目）
国家自然科学基金青年科学基金(12302465) （12302465）
