| 低应变率下硅铝质泡沫陶瓷复合材料的力学性能研究 |
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| 引用本文： | 李煦阳,李永池,高光发,黄瑞源. 低应变率下硅铝质泡沫陶瓷复合材料的力学性能研究[J]. 实验力学, 2014, 29(3): 310-316 |
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| 作者姓名： | 李煦阳 李永池 高光发 黄瑞源 |
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| 作者单位： | 1.中国科学技术大学 近代力学系, 安徽合肥 230027; 2.中科院材料力学行为和设计重点实验室, 安徽合肥 230027;1.中国科学技术大学 近代力学系, 安徽合肥 230027; 2.中科院材料力学行为和设计重点实验室, 安徽合肥 230027;1.中国科学技术大学 近代力学系, 安徽合肥 230027; 2.中科院材料力学行为和设计重点实验室, 安徽合肥 230027;1.中国科学技术大学 近代力学系, 安徽合肥 230027; 2.中科院材料力学行为和设计重点实验室, 安徽合肥 230027 |
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| 基金项目： | 国家自然科学基金11202206, 中国博士后科研基金2011M501394, 高等学校博士学科点专项科研基金20123415120001, 国家青年基金11102205 |
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| 摘 要： | 以泡沫陶瓷复合材料在防护工程中的应用为背景,利用MTS(Material Test System,材料试验机)对该型材料进行了准静态压缩实验。得到了应变率在10-5~10-3s-1范围内的应力应变曲线,并对实验结果进行了理论分析和数值模拟。研究表明,泡沫陶瓷复合材料的力学性能在准静态一维应力压缩条件下显示出明显的应变率效应,同时其应力应变曲线可用一种经验的脆性材料本构模型进行较好地拟合。而在一维应变压缩条件下,材料的应力应变曲线则显示出明显的三段式特征:弹性段、平台段和密实段,同时材料的吸能幅值随着应变率的增大而增加。
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| 关 键 词： | 复合材料 准静态力学性能 泡沫陶瓷 应变率效应 |
Research of Mechanical Properties of Sialic Foamed Ceramic Composite at Low Strain Rate |
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| LI Xu-yang,LI Yong-chi,GAO Guang-fa and HUANG Rui-yuan. Research of Mechanical Properties of Sialic Foamed Ceramic Composite at Low Strain Rate[J]. Journal of Experimental Mechanics, 2014, 29(3): 310-316 |
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| Authors: | LI Xu-yang LI Yong-chi GAO Guang-fa HUANG Rui-yuan |
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| Affiliation: | 1.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China; 2.Key Laboratory of Mechanical Behavior and Design of Materials, CAS, Hefei 230027, Anhui, China;1.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China; 2.Key Laboratory of Mechanical Behavior and Design of Materials, CAS, Hefei 230027, Anhui, China;1.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China; 2.Key Laboratory of Mechanical Behavior and Design of Materials, CAS, Hefei 230027, Anhui, China;1.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China; 2.Key Laboratory of Mechanical Behavior and Design of Materials, CAS, Hefei 230027, Anhui, China |
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| Abstract: | Taking the application of foamed ceramic composite in protection engineering as background, Material Test System(MTS)was used to investigate the mechanical behavior of sintering foamed ceramic composite under quasi-static compression loading. Its stress-strain curves were obtained within the strain rate range from 10-5s-1 to 10-3s-1. Experimental results were discussed based on theoretical analysis and numerical simulation. Results indicate that the behavior of foamed ceramic composite exhibits obvious strain rate effect under quasi-static one-dimensional stress compression loading, meanwhile, an empirical constitutive model for brittle materials can well fit the stress-strain curves. Under one-dimensional strain compression, the stress-strain curves exhibit obvious three-stage features: elastic region, plateau region and densified region. The energy absorption amplitude increases with the increase of strain rate. |
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| Keywords: | composite quasi-static mechanical properties foamed ceramics strain rate effect |
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