【摘要】 采用准静态侧向压缩试验和有限元仿真相结合的方法,对铝蜂窝填充碳纤维增强复合材料(Carbon Fiber Reinforced Plastic,CFRP)结构的侧向压缩性能和破坏机理开展了研究。试验发现,在稳定破坏模式下,相对CFRP空管,铝蜂窝填充管件的平均峰值载荷、吸收能量和比吸能率分别提高251.6%,656.3%和400.0%,并且破坏过程也更加稳定。此外,采用Ls-dyna软件对铝蜂窝填充CFRP管件的破坏过程进行了仿真,发现铝蜂窝填充可以有效抵抗管壁变形,并且获得了与试验较吻合的破坏过程和力-位移曲线。研究表明,利用轻质铝蜂窝结构填充CFRP管件,能有效改善CFRP结构的侧向压缩性能和吸能性能。更多还原

【Abstract】 Using the method of combining quasi static lateral compression experiment with finite element simulation, the lateral compression characteristics and failure mechanisms of carbon fiber reinforced plastic(CFRP) square tube filled with aluminum honeycomb were investigated. Test results show that the peak load, absorbed energy and specific energy absorption(SEA) of the filled CFRP tube are increased by 251.6%, 656.3% and 400.0% respectively compared to the bare CFRP tube,and the failure mode become more stable. In addition, numerical simulation of CFRP tube filled with aluminum honeycomb was carried out using the Ls-dyna software, result shows that failure mode and load-displacement curve are in accordance with experiment results. Research result indicates that CFRP tube filled with lightweight aluminum honeycomb tube can effectively improve the lateral compression properties and the energy absorption capacity of bare CFRP tube.更多还原