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准脆性SiCp/Al复合材料SHPB实验中 入射波整形技术

Keywords: 入射波整形,恒应变率,SHPB,SiCp/Al,复合材料

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Abstract:

针对陶瓷体积分数为50%的准脆性SiCp/Al复合材料恒应变率动态压缩实验,研究了入射波整形原则和理想入射波设计方法.结果表明:采用原始透射波和修正后反射波叠加设计的新入射波,通过控制整形器尺寸和子弹初速获得了理想的入射波,实现对准脆性复合材料的恒应变率加载;以测试材料力学特性为基础设计的整形器,可调整入射波形使之与透射波具有相同形状.针对准脆性SiCp/Al复合材料,SHPB实验中应变率只取决于入射波的幅值,而与整形后的入射波加载率关系不大,入射波中平台

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