三种构型的铝合金蜂窝板抗压性能研究

贺若桓; 王钢; 赵才其; 杨朔; 张志杰

doi:10.13206/j.gjgS22082601

三种构型的铝合金蜂窝板抗压性能研究

doi: 10.13206/j.gjgS22082601

1. 上海宝冶集团有限公司, 上海 201900;
2. 东南大学土木工程学院, 南京 210096

详细信息

作者简介:
贺若桓,男,1990年出生,硕士,二级注册结构工程师。Email:756834928@qq.com

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出版历程
- 收稿日期: 2022-08-26
- 网络出版日期: 2023-06-10

Study on Compressive Properties of Three Types of Aluminum Alloy Honeycomb Panels

1. Shanghai Baoye Group Corp., Ltd., Shanghai 201900, China;
2. School of Civil Engineering, Southeast University, Nanjing 210096, China

摘要

摘要: 受到独角仙的前翅中同时含有小柱和气囊壁结构的启发,对传统铝合金蜂窝板进行了改进,在铝合金蜂窝板芯板的蜂窝壁端部设置了小柱结构,即壁端柱甲虫板。因为独角仙前翅中有约10%的小柱分布在蜂窝壁的中间,故增加了小柱设置在蜂窝壁中部的壁中柱甲虫板。以三种板为研究对象,开展试验和有限元分析。为完全模拟一体化成型蜂窝板的性能和考虑到3D打印技术无法打印铝合金材料,故试验用树脂作为材料,采用3D打印技术制作一体化蜂窝板试件进行试验,用于验证计算机模拟的准确性。试验首先运用树脂材料通过3D打印技术制作3种不同构型的蜂窝板,分别为传统蜂窝板、壁中柱甲虫板和壁端柱甲虫板,对其开展侧压试验。通过试验数据可以看出,壁端柱甲虫板较传统蜂窝板侧压极限承载力由27.9 kN提升至34.7 kN;壁中柱甲虫板较传统蜂窝板侧压极限承载力由27.9 kN提升至31.9 kN。由此可见,壁端柱甲虫板的侧压性能较蜂窝板和壁中柱甲虫板更好。其次建立了有限元模型与试验数据对比验证,因3D打印工艺留下的小孔影响使得试件的破坏形态与有限元模型的应力分布略有差异,但板件上下边缘中心的低应力区与试验相同。由有限元模拟值与试验数值对比可以看出,模拟结果与试验结果平均误差仅3.366%,由此验证了有限元模型的有效性。再次建立基于铝合金材性的三类蜂窝板有限元模型,开展侧压有限元分析,结果显示,壁端柱甲虫板相较于传统蜂窝板在屈服承载力和极限承载力方面提升分别为2.6%和4.7%。最后分别对影响甲虫板侧压性能的柱的半径r与六边形蜂窝芯的边长L的比值α、甲虫板芯层的厚度h₁、上下面板的厚度h₂,甲虫板芯层蜂窝壁的厚度d这四种因素建立模型进行对比分析。分析结果显示:径长比由0.312 5增加至0.5时,屈服承载力和极限承载力分别增加了5.3%和6%;甲虫板芯层壁厚由1 mm增加到1.4 mm时,屈服承载力和极限承载力分别增加了3.3%和6.5%;甲虫板芯层厚度由6 mm增加到12 mm时,屈服承载力和极限承载力分别增加了2.2%和5.1%;甲虫板面层厚度由1 mm增加到2.5 mm时,屈服承载力和极限承载力分别增加了244%和236%。可见甲虫板面板厚度对侧压性能具有显著影响。
- 铝合金蜂窝板 /
- 壁中柱甲虫板 /
- 壁端柱甲虫板 /
- 侧压性能
Abstract: Inspired by the fact that the front wing of Unicorn contains both a column and an air bag wall structure,the traditional aluminum alloy honeycomb panel is improved in this paper.A column structure is set at the end of the honeycomb wall of the aluminum alloy honeycomb panel core panel,that is,a wall end column beetle panel.Because about 10% of the columella in the front wing of Unicorn Fairy distributed in the middle of the honeycomb wall,the columella in the middle of the honeycomb wall was added for joint research.Three kinds of plates are taken as the research object to carry out test and finite element analysis.In order to fully simulate the performance of the integrated molded honeycomb panel and consider that the 3D printing technology cannot print aluminum alloy materials,the resin is used as the material in the experiment,and the 3D printing technology is used to make the integrated honeycomb panel specimen for testing to verify the accuracy of the computer simulation.In the experiment,three different configurations of honeycomb panels,namely,traditional honeycomb panel,wall center pillar beetle panel and wall end pillar beetle panel,were made with resin materials through 3D printing technology,and side pressure tests were carried out on them.It can be seen from the experimental data that the ultimate lateral compression bearing capacity of the wall end post beetle board is increased from 27.9 kN to 34.7 kN compared with the traditional honeycomb board;compared with the traditional honeycomb panel,the lateral compression ultimate bearing capacity of the wall pillar beetle panel is increased from 27.9 kN to 31.9 kN.It can be seen that the lateral pressure performance of wall end post beetle board is better than that of honeycomb board and wall center post beetle board.Secondly,the finite element model was established to compare with the experimental data for verification.Due to the influence of the holes left by the 3D printing process,the failure form of the test piece was slightly different from the stress distribution of the finite element model,but the low stress area in the center of the upper and lower edges of the plate was the same as the experiment.It can be seen from the comparison between the finite element simulation value and the experimental value that the average error between the simulation results and the experimental results is only 3.366%,which verifies the validity of the finite element model.Thirdly,three kinds of honeycomb panel finite element models based on aluminum alloy material properties were established,and the side pressure finite element analysis was carried out.The results show that compared with the traditional honeycomb panel,the yield bearing capacity and ultimate bearing capacity of the wall end post beetle panel are improved by 2.6% and 4.7% respectively.Finally,the four factors that affect the lateral compression performance of the beetle board,namely,the ratio of the column radius r to the side length L of the hexagonal honeycomb core α,the thickness of the beetle board core layer h₁,the thickness of the upper and lower panels h₂,and the thickness of the beetle board core layer honeycomb wall d,were compared and analyzed.Among them,the diameter length ratio increased from 0.312 5 to 0.5,the yield bearing capacity and the ultimate bearing capacity increased by 5.3% and 6% respectively;the wall thickness of the core layer of the beetle board increased from 1mm to 1.4mm,and the yield bearing capacity and ultimate bearing capacity increased by 3.3% and 6.5% respectively;the thickness of the core layer of the beetle board increased from 6 mm to 12 mm,and the yield bearing capacity and ultimate bearing capacity increased by 2.2% and 5.1% respectively;the thickness of the surface layer of the beetle board increased from 1 mm to 2.5 mm,and the yield bearing capacity and ultimate bearing capacity increased by 244% and 236% respectively.It is concluded that the thickness of the beetle board panel has a significant impact on the side pressure performance.
- aluminum alloy honeycomb plate /
- wall middle column beetle plate /
- wall end column beetle plate /
- lateral pressure performance

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