ENERGY ABSORPTION ANALYSIS OF FILAMENT-WOUND CFRP/AL HYBRID THIN-WALLED CIRCULAR TUBE UNDER AXIALLY CRUSHING

DONG BoYan; MA QiHua; YAO Yuan; HU PeiYuan; SUN ZeYu

doi:10.16579/j.issn.1001.9669.2020.04.009

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ENERGY ABSORPTION ANALYSIS OF FILAMENT-WOUND CFRP/AL HYBRID THIN-WALLED CIRCULAR TUBE UNDER AXIALLY CRUSHING

更新时间：2022-09-22

- ENERGY ABSORPTION ANALYSIS OF FILAMENT-WOUND CFRP/AL HYBRID THIN-WALLED CIRCULAR TUBE UNDER AXIALLY CRUSHING
- Journal of Mechanical Strength Vol. 42, Issue 4, Pages: 817-825(2020)
- 作者机构：
  
  1. 上海工程技术大学机械与汽车工程学院
  2. 纤维材料改性国家重点实验室(东华大学)
  3. 华域汽车车身零件(上海)有限公司
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2020.04.009
  CLC：
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DONG BoYan, MA QiHua, YAO Yuan, et al. ENERGY ABSORPTION ANALYSIS OF FILAMENT-WOUND CFRP/AL HYBRID THIN-WALLED CIRCULAR TUBE UNDER AXIALLY CRUSHING. [J]. 42(4):817-825(2020)
DOI：

DONG BoYan, MA QiHua, YAO Yuan, et al. ENERGY ABSORPTION ANALYSIS OF FILAMENT-WOUND CFRP/AL HYBRID THIN-WALLED CIRCULAR TUBE UNDER AXIALLY CRUSHING. [J]. 42(4):817-825(2020) DOI： 10.16579/j.issn.1001.9669.2020.04.009.

摘要

采用仿真与试验结合的方法,探讨缠绕方式为[±45°/90°]碳纤维增强复合材料(CFRP)/铝混合薄壁圆管在准静态轴向压缩载荷下的压溃失效形式与吸能特性。通过准静态轴向压缩试验得到混合圆管的压溃变形历程、压溃模式以及初始压溃载荷、平均压溃载荷等吸能特性参数。依据试验样件建立混合管有限元模型,利用Abaqus/Explicit获得了与试验吻合度较好的模拟结果,重现了混合管在准静态载荷下的压溃失效行为。基于仿真结果发现与铝管相比,混合管的初始压溃载荷、平均压溃载荷、比吸能及载荷效率分别提升了97.6%、93.3%、57.8%和5.9%。并选取压溃载荷阶段性峰、谷点对混合管形态及各层纤维损伤失效形式进行了分析。结果表明:在混合管结构完整时,轴向载荷主要由纤维承载,在压溃破坏阶段,纤维损伤失效模式随纤维缠绕角度、铝管压溃形态以及CFRP/Al粘接界面状态等产生变化。随后对比了三种不同结构形式CFRP/Al混合圆管的吸能特性,发现外层缠绕[90°/±45°]CFRP/Al混合圆管吸能性最好。

Abstract

Combined simulation and test to investigate the collapse failure mode and energy absorption characteristics of wingding carbon fiber reinforced composite（CFRP[± 45°/90°]）/Al hybrid thin-walled circular tube under quasi-static axial compression load. Failure mode,Load-displacement curves and energy absorption characteristics were obtained under quasi-static axial crushing tests. A finite element model of hybrid tube was established according to samples. The simulation results with good agreement with the test were obtained by ABAQUS/Explicit,and the crushing failure behavior of the hybrid tube under quasistatic load was reproduced. Based on the simulation results,it was found that the initial crushing load,average crushing load,specific energy absorption and load efficiency of the mixing tube were increased by 97. 6%,93. 3%,57. 8% and 5. 9%,respectively. compared with the aluminum tube. The staged peaks and valleys of the crushing load were selected to analyze the shape of hybrid tube and the failure state of the fiber damage. The results show that when the hybrid tube is complete the fiber plays the main bearing role. In the crushing failure stage,the fiber damage failure mode changes with fiber winding angle,the crushing morphology of aluminum tube and the bonding interface state of CFRP/Al. Subsequently,the energy absorption characteristics of CFRP/Al hybrid circular tubes with three different structure forms were compared. It was found that hybrid circular tube with CFRP[90°/± 45°] wrapped the outside of the aluminum has the best energy absorption.

关键词

CFRP/Al混合薄壁圆管数值模拟损伤失效吸能特性结构形式

Keywords

CFRP/AlHybrid thin-walled circular tubeNumerical simulationDamage failureEnergy absorption characteristicStructure form

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