In order to study the static and dynamic property of ceramic foam, quasi-static uniaxial stress compression tests, quasi-static uniaxial strain compression tests and dynamic SHPB tests were conducted for a new kind of closed-cell clay ceramic foam due to its good performance in energy-absorption, anti-blasting and potential prospect in engineering. Stress-strain curves of the ceramic form under three different conditions mentioned above were obtained and the strength, deformation, and failure behavior of the material were discussed. The results indicated that ( 1) the ceramic form is a strain rate sensitive material; (2) Although the elastic limit of the ceramic form is not as large as normal ceramic but its strength keeps a certain value after the peak stress reachesd; (3) the ceramic form has a large extreme strain under both static and dynamic loading and its energy loss related to the irreversible deformation due to pore collapse in the material in a loading-unloading cycle is considerable, and hence the effects of its wave absorption and energy dissipation are prominent. It was suggested that the ceramic form can be considered as one of the important materials for protective components in engineering.%以泡沫陶瓷的静、动态力学性能为研究目的,针对其吸波耗能作用明显、抗爆能力强、工程应用潜力较大的特点,对一种新的粘土质闭孔泡沫陶瓷开展了准静态一维应力压缩实验、一维应变压缩实验以及动态一维应力压缩实验.得到该材料在三种加载条件下的应力-应变曲线,讨论了不同加载条件下的材料的强度特性和变形破坏特征.结果表明:(1)泡沫陶瓷属于应变率敏感材料；(2)虽然泡沫陶瓷的弹性极限不高,但峰值应力过后,强度并没有立即消失,而是维持在一定的应力水平上；(3)不论是动加载还是静加载,泡沫陶瓷的极限应变都很大,与孔穴压实相关的变形不可逆过程所导致的能量耗损十分可观,材料的吸波耗能效果突出.因此泡沫陶瓷可以作为防护工程中抗爆抗冲击构件的首选材料之一.
展开▼
