在飞机越界工程材料阻滞系统（EMAS）中,阻滞材料的压缩力学性能极为重要。本文对一种新型阻滞材料——轻质泡沫混凝土在室温下应变率从0.001/s到0.1/s的压缩力学行为进行了系统研究。结果表明：在该应变率范围内此材料力学性能对应变率不敏感;但此材料的密度对其力学行为影响很大。通过对压溃平台应力、密实应变和密度等参量的分析,结合系统的试验结果,建立了该材料的压缩唯象本构模型,通过模型预测结果与试验结果比较,唯象本构模型与试验结果吻合较好。
In the engineered material arresting system（EMAS） for the airplane overran the runway,compressive mechanical property of an arresting material is very important.Compressive mechanical behavior of one new arresting material-lightweight foamed concrete was systematically studied at the room temperature in the strain-rate range of 0.001/s to 0.1/s in this paper.Results show this material is insensitive to strain rate in this strain-rate range,but the density of this material has a remarkable influence on the mechanical behavior.Through the analysis of crushing platform stress,densification strain,density and other parameters,combining with systematic test results,a phenomenological compressive constitutive model of this material is established.Comparing test results with modeling predictions,good agreements are obtained between the phenomenological constitutive model and test results.
参考文献
| [1] | Cazimir tuman .Aircraft arrestment system[P].United States patent,No.US4393996,1983. |
| [2] | Angley et al.Arresting material test apparatus and methods[P].United States patent,No.US5789681,1998. |
| [3] | Matthew A;Barsotti et al.Developing improved civil aircraft arresting system[ACRP report 29][R].,2009. |
| [4] | 颜雪洲,姚谦峰.泡沫混凝土力学性能试验研究[J].工业建筑,2007(z1):962-964. |
| [5] | 张磊,杨鼎宜.轻质泡沫混凝土的研究及应用现状[J].混凝土,2005(08):44-48. |
| [6] | Jones MR;McCarthy A.Behaviour and assessment of foamed concrete for construction applications[A].London:Thomas Telford,2005:61-88. |
| [7] | K. Ramamurthy;E.K. Kunhanandan Nambiar;G. Indu Siva Ranjani .A classification of studies on properties of foam concrete[J].Cement & concrete composites,2009(6):388-396. |
| [8] | E.P. Kearsley;P.J. Wainwright .The effect of porosity on the strength of foamed concrete[J].Cement and Concrete Research,2002(2):233-239. |
| [9] | E.P. Kearsley;P.J. Wainwright .Porosity and permeability of foamed concrete[J].Cement and Concrete Research,2001(5):805-812. |
| [10] | 魏鸿林,张世利,李克庆,陈德平.泡沫混凝土的制备及其显微结构[C].2009全国保温材料技术交流会论文集,2009:30-35. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%