基于纳米压痕试验的月球岩石力学性质分析  

Mechanical properties analysis of lunar rocks using nanoindentation experiments

作　　者：张怡恒 高飞 乔江美 唐旭海 ZHANG Yiheng;GAO Fei;QIAO Jiangmei;TANG Xuhai(School of Civil Engineering,Wuhan University,Wuhan 430072,China;Wuhan University Shenzhen Research Institute,Shenzhen 518057,Guangdong China)

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]武汉大学深圳研究院,广东深圳518057

出　　处：《华中科技大学学报（自然科学版）》2024年第8期84-90,共7页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(12172264);深圳市科技计划资助项目(JCYJ20220530140602005)。

摘　　要：为探究月球岩石力学性质,基于微观岩石力学试验和精确矿物晶体模型,提出了适用于小尺寸、任意形状岩样的多尺度力学参数测试方法.结果表明:Northwest Africa 13788(NWA13788)月球陨石中主要矿物包括钙长石、培长石、富Si-Na-Ca-Mg玻璃、橄榄石、辉石和铬铁矿,其体积分数分别为63.04%,21.66%,5.63%,4.69%,3.93%和0.50%;各矿物的弹性模量分别为钙长石78.90 GPa、培长石84.67 GPa、富Si-Na-Ca-Mg玻璃94.04 GPa、橄榄石134.32 GPa、辉石138.80 GPa、铬铁矿140.54 GPa;通过建立精确矿物晶体模型,并进行单轴压缩模拟,求解得到NWA13788月球陨石的宏观弹性模量为(59.51±2.68)GPa.To study the mechanical properties of lunar rocks,a multiscale mechanical parameter testing method applicable to smallsized and arbitrarily shaped rock samples was proposed based on microscale rock mechanics experiments(micro-RME)and accurate grain-based modeling(AGBM).The results indicate that the main minerals in Northwest Africa 13788(NWA13788)lunar meteorites include anorthite,bytownite,Si-Na-Ca-Mg-rich glass,olivine,pyroxene and chromite,with volume fractions of 63.04%,21.66%,5.63%,4.69%,3.93%,and 0.50%,respectively.The elastic moduli of each mineral are as follows:anorthite 78.90 GPa,bytownite 84.67 GPa,Si-Na-Ca-Mg-rich glass 94.04 GPa,olivine 134.32 GPa,pyroxene 138.80 GPa,and chromite 140.54 GPa.By establishing AGBM and conducting uniaxial compression simulations,the macroscale elastic modulus of the NWA13788 lunar meteorite was determined to be(59.51±2.68)GPa.

关 键 词：行星岩土力学 月球岩石 陨石 纳米压痕 跨尺度 

分 类 号：P691[天文地球—地质学]