苎麻纤维增强复合铝管的轴向压缩性能研究  

Study on Axial Compressive Properties of Ramie Fiber Reinforced Composite Aluminum Tube

作　　者：张显 蔡明 孙宝忠[3] 马其华 周天俊[2] Zhang Xian;Cai Ming;Sun Baozhong;Ma Qihua;Zhou Tianjun(School of Air Transportation,Shanghai University of Engineering Science,Shanghai 201620,China;School of Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Key Laboratory of High Performance Fibers&Products,Ministry of Education,Donghua University,Shanghai 201620,China)

机构地区：[1]上海工程技术大学航空运输学院,上海201620 [2]上海工程技术大学机械与汽车工程学院,上海201620 [3]东华大学高性能纤维及制品教育部重点实验室,上海201620

出　　处：《工程塑料应用》2021年第9期60-67,81,共9页Engineering Plastics Application

摘　　要：为大力发展绿色环保材料,将苎麻与铝管混合制备苎麻纤维增强复合铝管(Al-RFRP)。通过实验研究了不同卷绕角度与卷绕厚度对Al-RFRP的准静态轴向压缩作用下的破坏模式和吸能性能的影响。结果表明:Al-RFRP复合管在轴向载荷的压溃下,铝管发生渐进叠缩变形,而RFRP多为脆性断裂与界面分层。RFRP明显改善了纯Al管的轴向压缩性能,相比纯Al管,Al-RFRP复合管的峰值载荷、总吸能有所增加;其中45°卷绕方向的Al-RFRP复合管的各项吸能指标都优于90°的卷绕方向,并且卷绕厚度对90°卷绕方向的Al-RFRP复合管的吸能效果影响较小。通过有限元仿真模拟出Al-RFRP复合管的轴向压缩过程,其结果与实验吻合较好,进一步结合实验与仿真结果,通过复杂比例评价法优选出45°方向卷绕14层的Al-RFRP复合管吸能效果最好。该复合材料混合薄壁管因其轻质与高吸能性,以期应用于汽车、飞机等机械系统的承力部件中。In order to vigorously develop green environmental protection materials,ramie with aluminum tubes was mixed to prepare ramie fiber reinforced composite aluminum tubes(Al-RFRP).The effects of different winding angles and winding thicknesses on the failure mode and energy absorption performance of Al-RFRP under quasi-static axial compression are studied through experiments.The experimental results show that the Al-RFRP composite tube undergoes progressive telescopic deformation under the axial load,while the RFRP is mostly brittle fracture and interface delamination.RFRP significantly improves the axial compression performance of pure Al tubes.Compared with pure Al tubes,the peak load and total energy absorption of Al-RFRP composite tubes are increased,and the energy absorption index of the 45°winding direction is better than that of the 90°winding direction,and the winding thickness has little effect on the energy absorption effect of the Al-RFRP composite tube in the 90°winding direction.The axial compression process of the Al-RFRP composite tube is simulated by finite element simulation,and the results agree well with the experiment.Further combining the experimental and simulation results,the complex ratio evaluation method is used to optimize the Al-RFRP composite tube of 14-layer winding in the direction of 45°has the best energy absorption effect.Due to light weight and high energy absorption,composite material hybrid thin-walled tubes are promising to be used in mechanical systems of mechanical systems such as automobiles and airplanes.

关 键 词：植物纤维 轴向压缩 复合管 吸能特性 失效模式 

分 类 号：TB332[一般工业技术—材料科学与工程]