3D打印蜂窝结构在临时性建筑中的力学性能分析  

Analysis of mechanical properties of 3 D-printing honeycomb in temporary construction

作　　者：赵峻宏 朱世范 ZHAO Junhong;ZHU Shifan(College of Mechanical and Electrical Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学机电工程学院,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2020年第12期98-104,共7页Journal of Harbin Institute of Technology

基　　金：黑龙江省自然科学基金(QC2016063)。

摘　　要：为研究改进传统临时性建筑如:木头、纸筒、竹子、简易帐篷等材料制备的临时性住所存在可设计性不强、材料不够轻便、力学性能不足等问题.利用3D打印技术,使用PLA材料制备了手型蜂窝、六边形蜂窝、内凹六边形蜂窝、星形蜂窝和三角形蜂窝结构,并对这5种蜂窝结构进行测试了面内拉伸、面外弯曲和面内压缩的力学特性.根据实验结果,依靠数据对这5种结构的蜂窝芯子进行力学性能对比.结果显示手型蜂窝结构具有较大的承载能力,六边形蜂窝结构的综合力学性能优于其他4种结构.最后根据载荷位移曲线图,对比分析运用3D打印蜂窝结构在临时性建筑中,如何优于传统临时性建筑在建造中所使用的结构与材料.研究表明:设计的蜂窝结构轻质高强优于传统临时性建筑物材料,在一定条件下利用3D打印技术,使用PLA材料制备的手型蜂窝和六边形蜂窝结构,可以满足灾后临时性建筑的力学性能需求且可设计性强,材料轻便节省人力,有效的减少临时建筑物对灾民的二次伤害.To study and improve the traditional temporary buildings,such as wood,paper tube,bamboo,simple tents and other materials made of temporary shelters.There are some problems of temporary shelters such as weak designability,thick materials,insufficient mechanical properties and so on.In this paper,chiral honeycomb,hexagonal honeycomb,concave hexagonal honeycomb,star honeycomb and triangular honeycomb structures were fabricated by 3D printing technology.In-plane tension,out-of-plane bending and in-plane compression characteristics were tested.The results show that the chiral honeycomb structure has a large bearing capacity,and the comprehensive mechanical properties of the hexagonal honeycomb structure are better than the other four structures.This study shows that the honeycomb structure designed in this paper is superior to the traditional temporary building materials.Under certain conditions,the chiral honeycomb and hexagonal honeycomb structure prepared by using PLA material can meet the the needs of mechanical properties and design of temporary buildings after disaster,save manpower with light materials,and effectively reduce the secondary damage of temporary buildings to victims.

关 键 词：3D打印 蜂窝结构 临时性建筑 力学性能测试 PLA材料 

分 类 号：TU375[建筑科学—结构工程]