Damage evolution and dynamic constitutive model of geopolymeric concrete at elevated temperature

被引：0
|
作者：
Wang Z.-K. [1 ]
Xu J.-Y. [1 ,2 ]
Ren W.-B. [1 ]
Bai E.-L. [1 ]
Dong Z.-G. [3 ]
机构：
[1] Department of Airfield and Building Engineering, Air Force Engineering University, Xi'an
[2] College of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi'an
[3] The Air Force Equipment Department, Beijing
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2016年 / 35卷 / 02期
关键词：
Constitutive model; Damage; Elevated temperature; Geopolymeric concrete; Strain rate;
D O I：
10.13465/j.cnki.jvs.2016.02.018
中图分类号：
学科分类号：
摘要：
The damage evolution and dynamic constitutive model of geopolymeric concrete at elevated temperature were investigated using a high temperature SHPB (Split Hopkinson Pressure Bar) test system. The results show that the major mechanical performance indexes reveal the prominent effects of temperature and strain rate. The wave impedance can be used to measure the thermal damage of geopolymeric concrete, and the damage evolution law has a good agreement with the actual situation. Based on the static constitutive model, the dynamic damage constitutive model of geopolymeric concrete considering the effects of temperature and strain rate was established, and the indexes can be determined by experimental results. The model can accurately describe the dynamic characteristics of geopolymeric concrete at elevated temperature. © 2016, Chinese Vibration Engineering Society. All right reserved.
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页码：110 / 115
页数：5
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