六边形Al-复合材料薄壁混杂管准静态压缩实验和吸能机理分析

材料导报

2022, Vol. 36

Issue (Z1): 22020120-6

无机非金属及其复合材料

六边形Al-复合材料薄壁混杂管准静态压缩实验和吸能机理分析

陈东方¹, 武海鹏², 梁钒², 周骐², 宋显刚¹, 田爱琴¹

1 中车青岛四方机车车辆股份有限公司,山东青岛 266111
2 哈尔滨玻璃钢研究院有限公司,哈尔滨 150029

Quasi-static Compression Testing and Energy Absorption Mechanism Analysis of Hexagonal Al-composite Thin-walled Hybrid Tubes

CHEN Dongfang¹, WU Haipeng², LIANG Fan², ZHOU Qi², SONG Xiangang¹, TIAN Aiqin¹

1 CRRC Qingdao Sifang Co., Ltd.,Qingdao 266111, Shandong, China
2 Harbin FRP Institute Co., Ltd., Harbin 150029, China

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摘要将铺放和缠绕组合工艺成型的复合材料六边形薄壁管和金属Al管组成混杂吸能管,其在轴向准静态压缩实验中有稳定的破坏形式和吸能模式,外侧复合材料的高刚强度提高了内侧金属管的塑性变形能力,内侧金属管支撑限制了复合材料管的局部屈曲。同时,复合材料管的纤维角度和端部触发机制对吸能效果有显著影响。实验证明,当混杂管试件纤维角度为[±45°]时,以面内剪切和层间剪切吸能为主,试件的比吸能比 [0° /90°]、[±45°₂/0° /0° /90° /0°]、[64°₂/0°₂/64°₂/0°₂/64°₂]铺层试件分别提高33.9%、42.9%、36.4%;当混杂管试件端部触发机制为导角时,相比端部开槽和开孔形式,可以有效地降低初始峰值载荷。

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关键词: 混杂薄壁管触发机制吸能机理比吸能峰值载荷

Abstract: Hybrid energy-absorbing tube are manufactured with composite hexagonal thin-walled tube and Al tube by placement and winding combined process, which has the stable failure and the energy-absorbing mode in axial quasi-static compression testing. The high strength of the ou-ter composite increases the plastic deformation of the inner metal tube, and the support of the inner metal tube limits the local buckling of the composite tube. At the same time, the fiber angle and the trigger mechanism at the end have an obvious influence on the energy absorption effect. The experiments show that the in-plane and interlaminar shear energy absorption are dominant when the fiber angle of the hybrid tube is [±45°], the specific energy absorption were respectively increased by 33.9%, 42.9% and 36.4%, compared with those of [0° /90°], [±45°₂/0°/0°/90°/0°], [64°₂/0°₂/64°₂/0°₂/64°₂] samples. When the trigger mechanism at the end of the hybrid tube was the guide angle, the initial peak load can be reduced more effectively than that of the form of slotting and making the hole at the end.

Key words: hybrid thin-walled tube trigger mechanism energy absorbing mechanism specific energy-absorbing peak load

出版日期: 2022-06-05 发布日期: 2022-06-08

ZTFLH:	V415.1
	TB332

通讯作者: wu_effort@163.com

作者简介: 陈东方,2010年获得哈尔滨工业大学材料加工工程硕士学位,现为中车青岛四方机车车辆股份有限公司高级工程师,从事轨道车辆用复合材料部件的研发工作。
武海鹏,于2002年获得哈尔滨工业大学航天学院工程力学硕士学位,现为哈尔滨玻璃钢研究院有限公司正高级工程师。研究方向:复合材料结构设计、有限元仿真、复合材料轻量化设计。目前已在《应用力学学报》、《材料导报》、《复合材料与工程》等刊物发表论文11篇,取得新型专利、发明专利授权12项。

引用本文:

陈东方, 武海鹏, 梁钒, 周骐, 宋显刚, 田爱琴. 六边形Al-复合材料薄壁混杂管准静态压缩实验和吸能机理分析[J]. 材料导报, 2022, 36(Z1): 22020120-6.
CHEN Dongfang, WU Haipeng, LIANG Fan, ZHOU Qi, SONG Xiangang, TIAN Aiqin. Quasi-static Compression Testing and Energy Absorption Mechanism Analysis of Hexagonal Al-composite Thin-walled Hybrid Tubes. Materials Reports, 2022, 36(Z1): 22020120-6.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2022/V36/IZ1/22020120

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