横向压溃载荷下碳纤维缠绕薄壁钢管的失效分析

玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (9): 5-13.

• 基础研究 • 下一篇

横向压溃载荷下碳纤维缠绕薄壁钢管的失效分析

孙佳睿¹, 马其华^{1, 2*}, 蔡明³, 胡沛元⁴

1.上海工程技术大学机械与汽车工程学院,上海201620;
2.纤维材料改性国家重点实验室(东华大学),上海201620;
3.上海工程技术大学航空运输学院,上海201620;
4.华域汽车车身零件(上海)有限公司,上海200433

收稿日期:2018-11-29 出版日期:2019-09-28 发布日期:2019-09-28
通讯作者: 马其华(1980-),男,博士研究生,副教授,主要从事汽车轻量化及碳纤维复合材料应用方面的研究,mqh0386@163.com。
作者简介:孙佳睿(1994-),男,硕士研究生,主要从事复合材料汽车轻量化方面的研究。
基金资助:
纤维材料改性国家重点实验室开放课题(KF1826);中央高校基本科研业务费专项资金学科交叉重点计划项目(18D110320);中央高校基本科研业务费专项资金资助(2232018A3-02);上海工程技术大学研究生科研创新项目资助(E3-0903-18-01150)

FAILURE ANALYSIS OF CARBON FIBER WINDED THIN-WALLED STEEL TUBE UNDER TRANSVERSE CRUSHING LOAD

SUN Jia-rui¹, MA Qi-hua^1,2*, CAI Ming³, HU Pei-yuan⁴

1.School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science, Shanghai 201620, China;
2.State Key Laboratory for Modification of Chemical Fibers and Polymer, Donghua University, Shanghai 201620, China;
3.School of Air Transportation,Shanghai University of Engineering Science, Shanghai 201620, China;
4.Huayu Automotive Body Components Technology (Shanghai) Co., Ltd., Shanghai 200433, China

Received:2018-11-29 Online:2019-09-28 Published:2019-09-28

摘要/Abstract

摘要： 采用三点弯曲试验和仿真相结合的方法分析了碳纤维增强复合材料(CFRP)缠绕钢(Steel)圆管在横向准静态载荷下的弯曲破坏行为。选取五种缠绕层数或顺序不同的Steel/CFRP混合管分析其受弯失效历程、失效模式以及吸能特性。结果表明:各混合管受横向载荷的失效历程基本与纯钢管保持一致,失效模式由钢管的稳定塌陷模式所主导,但纤维缠绕方式不同,失效形貌略有差异。在混合管的吸能特性方面,随着缠绕层数的增加,混合管的比吸能逐渐增大;±45°纤维的缠绕顺序分布对于其吸能特性影响较显著。相比增加缠绕层数而言,合理的缠绕顺序设计可以实现更好的吸能特性提升,其中Steel/CFRP[±45°/90°/90°]₂的混合管比吸能最好,比纯钢管提高了41.37%。在此基础上,采用与试验一致性较好的有限元模型分析了混合管复合材料各层受载作用下的Von-Mises应力分布,证明了不同缠绕角度对于应力承担量的不同作用,为改进纤维缠绕方式提供了依据。

关键词: Steel/CFRP混合管, 三点弯曲, 缠绕层数, 缠绕顺序, 吸能特性, Von-Mises应力

Abstract: The bending collapse behavior of carbon fiber reinforced polymer (CFRP) wound steel circular hollow tubes was investigated under transverse quasi-static loading by three-point bending test and simulation. Five kinds of Steel/CFRP hybrid tubes with different winding layers or sequences were selected to analyze their bending failure process, failure modes and energy absorption characteristics. The results showed that the failure process of each hybrid tube under transverse loading was basically consistent with the pure steel tube, and the failure mode was dominated by the stable collapse mode of steel tube, while the failure morphologies were slightly different due to the influence of outer filament winding modes. On the energy absorption characteristics of hybrid tubes, it was found that the specific energy absorption of the hybrid tube increased with the increase of winding layers, and the distribution of (±45°) filament winding had a significant influence on the energy absorption characteristics of the hybrid tubes. Compared with the increase of the number of winding layers, reasonable winding sequences design can achieve better energy absorption performance. The special energy absorption of the Steel/CFRP [±45°/90°/90°]₂ hybrid tube is the best and 41.37% higher than that of the pure steel tube. On this basis, the Von-Mises stress distribution of composite laminates under different loads was analyzed by using the finite element model which is in good agreement with the experiment. It is proved that different winding angles have different effects on the stress burden, which provides a basis for improving the filament winding mode.

Key words: Steel/CFRP hybrid tubes, three-point bending, winding layers, winding sequences, energy absorption characteristics, Von-Mises stress

中图分类号:

TB332

孙佳睿, 马其华, 蔡明, 胡沛元. 横向压溃载荷下碳纤维缠绕薄壁钢管的失效分析[J]. 玻璃钢/复合材料, 2019, 0(9): 5-13.

SUN Jia-rui, MA Qi-hua, CAI Ming, HU Pei-yuan. FAILURE ANALYSIS OF CARBON FIBER WINDED THIN-WALLED STEEL TUBE UNDER TRANSVERSE CRUSHING LOAD[J]. Fiber Reinforced Plastics/Composites, 2019, 0(9): 5-13.

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横向压溃载荷下碳纤维缠绕薄壁钢管的失效分析

FAILURE ANALYSIS OF CARBON FIBER WINDED THIN-WALLED STEEL TUBE UNDER TRANSVERSE CRUSHING LOAD

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