期刊文献+

聚氨酯泡沫铝复合材料动态力学实验 被引量:19

Experimental study on dynamic mechanical performance of polyurethanealuminum foams composites
原文传递
导出
摘要 通过在开孔泡沫铝中填充聚氨酯得到了聚氨酯泡沫铝,利用Hopkinson杆对泡沫铝与泡沫聚氨酯组成的三维连续网络增强复合材料进行了在不同相对密度、应变率和聚氨酯含量下的动态压缩实验。结果表明,在相同应变率和相对密度下,与泡沫纯铝相比,聚氨酯泡沫铝屈服强度和压缩应变量显著增加,而且应力-应变曲线出现明显的抖动。随着应变的不断增大,应力也逐渐增加,在达到某一相同的应变时,聚氨酯泡沫铝的应力值较高,吸能量也较多。另外,当应变率增加时,聚氨酯泡沫铝表现出很明显的应变率效应。 The polyurethane-aluminum foam was fabricated by filling the open-cell aluminum foam with polyurethane.Making use of the Hopkinson pressure bar,the dynamic compression experiments have been carried out to reinforced composites of three-dimensional continuous network composed of aluminum foam and polyurethane under different relative density,strain rate and polyurethane content.The experiment results indicate that the yield strength and the compression strain of polyurethane-aluminum foam are significantly improved,compared with the aluminum foam under the identical strain rate and relative density,and its stress-strain curve displays some obvious fluctuations.With the increase of the strain,the stress also increases and when the strain reaches a certain value,the stress corresponding to the polyurethane-aluminum foam is higher and its energy absorption is more than that of the aluminum foam.Furthermore,when the strain rate increases,polyurethane-aluminum foam presents an obvious effect of strain rate.
出处 《复合材料学报》 EI CAS CSCD 北大核心 2011年第3期103-108,共6页 Acta Materiae Compositae Sinica
基金 国家自然科学基金(50974107)
关键词 泡沫铝 聚氨酯泡沫铝 Hopkinson杆实验 动态力学性能 aluminum foam polyurethane aluminum foam Hopkinson bar experiment dynamic mechanicalperformance
  • 相关文献

参考文献9

二级参考文献107

共引文献120

同被引文献165

引证文献19

二级引证文献66

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部