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[1]庄 勇,王 健,方 海,等.空间格构腹板增强泡沫夹芯复合材料-试件准静态压缩吸能试验[J].建筑科学与工程学报,2018,35(05):70-77.
 ZHUANG Yong,WANG Jian,FANG Hai,et al.Experimental Investigation on Energy Absorption of Foam Sandwich Composite with Spatial Reinforced Lattice Web Under Quasi-static Compression[J].Journal of Architecture and Civil Engineering,2018,35(05):70-77.
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空间格构腹板增强泡沫夹芯复合材料-试件准静态压缩吸能试验(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
35卷
期数:
2018年05期
页码:
70-77
栏目:
出版日期:
2018-09-03

文章信息/Info

Title:
Experimental Investigation on Energy Absorption of Foam Sandwich Composite with Spatial Reinforced Lattice Web Under Quasi-static Compression
作者:
庄 勇王 健方 海刘伟庆陈继业
南京工业大学土木工程学院
Author(s):
ZHUANG YongWANG Jian FANG Hai LIU Wei-qing CHEN Ji-ye
College of Civil Engineering, Nanjing Tech University
关键词:
空间格构腹板复合材料结构准静态压缩破坏模式吸能性能
Keywords:
spatial reinforced lattice web composite sandwich structure quasi-static compression failure mode performance of energy absorption
分类号:
-
DOI:
-
文献标志码:
A
摘要:
采用聚氨酯泡沫作为填充材料,玻璃纤维增强复合材料作为面层和腹板,将双层正交格构腹板改变为双层错位格构腹板、多层错位格构腹板、六边形格构腹板和多层梯形格构腹板,制作空间格构腹板增强泡沫夹芯复合材料试件。对试件开展准静态压缩试验,记录试件的破坏过程,得到其荷载位移曲线。分析试件产生不同破坏形式的原因,对比试件在压缩变形过程中承载力变化情况;引入能量吸收值、比吸能和平均压溃力3个指标比较试件的吸能性能。结果表明:改变竖直格构腹板的空间位置后,试件的准静态压缩破坏模式由竖直格构腹板突然屈曲失稳破坏改变为竖直格构腹板先产生倾斜再发生弯曲破坏,以及斜向格构与泡沫的剥离破坏和斜向格构与斜向格构的层间剥离破坏,有效减少了试件承载力的弹性突变,降低了试件的脆性;竖直格构腹板弯曲破坏比斜向格构的剥离破坏吸收更多能量,其能量吸收值波动幅度最大为16.6%;试件的能量吸收值随着压缩量增加呈线性增加,其耗能性能较为稳定。
Abstract:
Foam sandwich composite specimens with spatial reinforced lattice webs were produced with panels, lattice webs which were made from glass fiber reinforced polymer (GFRP) and core which was made from polyurethane foam. Double-layered orthogonal lattice webs were transformed into double-layered dislocation lattice webs, triple-layered dislocation lattice webs, hexagonal lattice webs and trapezoid lattice webs by changing vertical lattice webs. Quasistatic compression text was performed on specimens to record the failure process of test specimens and obtain its load-displacement curves. The causes of different failure modes were analyzed and the variation of bearing capacity of specimens during quasi-static compression were compared. The energy absorption performance of specimens was compared by introducing energy absorption value, specific energy absorption and mean crushing load. The results show that failure mode such as sudden buckling destruction of vertical lattice webs is changed into vertical lattice webs first produces tilt and then bending failure, division of oblique lattice and foam, division of oblique lattice and oblique lattice by changing spatial position of vertical lattice webs. It can also effectively reduce elastic mutation of bearing capacity and brittleness. The bending failure of vertical lattice webs absorbs more energy than division of oblique lattice webs. The maximum fluctuation of the energy absorption value of test specimens is 16.6%. The energy absorption value of specimens increases linearly with the increase of compression. The performance of energy absorption of tested specimens is relatively stable.

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更新日期/Last Update: 2018-09-03