Compression behavior and constitutive model establishment of fly ash cenosphere/polyurethane aluminum alloy syntactic foam  

粉煤灰漂珠/聚氨酯复合泡沫铝材料压缩性能与本构关系研究

作　　者：XU Peng WANG Yonghuan 徐鹏;王永欢(中北大学理学院,山西太原030051;北京理工大学宇航学院,北京100081)

机构地区：[1]School of Science, North University of China, Taiyuan 030051, China [2]School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

出　　处：《Journal of Measurement Science and Instrumentation》2021年第3期369-378,共10页测试科学与仪器（英文版）

基　　金：National Natural Science Foundation of China(No.11602233)。

摘　　要：The aluminum matrix syntactic foam was fabricated by pressure infiltration technique,and the filling material is syntactic foam material with fly ash cenosphere as the main component and polyurethane foam as the binder.Split Hopkinson pressure bar(SHPB)dynamic compression and quasi-static tests were carried out to examine the compressive response of syntactic foam in this study.Then the dynamic constitutive model was established.Results show that the compressive stress-strain curve of syntactic aluminum foam is similar to that of other metallic foam materials:both kinds of aluminum matrix syntactic foams have strain rate effect,and the syntactic foam has higher compressive strength and energy absorption than the same density aluminum foams.However,due to the different sizes of cenospheres,the dynamic compression results of two kinds of syntactic foams are different,and the energy absorption effect of syntactic foam with small size under dynamic impact is the best.In the range of strain rate and density studied experimentally,the curves of constitutive model fit well with the curves of experimental data.

关 键 词：fly ash cenosphere POLYURETHANE composite foam aluminum strain rate effect mechanical property constitutive model 

分 类 号：TQ3[化学工程]