摘要
混凝土材料的动态拉伸应力应变曲线是其动态力学性能的重要部分。由于实验装置的限制,混凝土的动态拉伸性能主要通过巴西圆盘实验和层裂实验间接进行研究。论文借助大直径分离式霍普金森拉杆实验装置(Split Hopkinson Tension Bar,SHTB)对混凝土进行了动态直接拉伸实验,介绍了试件的连接和应力波的加载,对判断低加载率下试件的破坏形式进行了分析和研究。
Dynamic tensile stress-strain curve of concrete plays an important part in its dynamic mechanical properties. Due to the limitation of experimental apparatus, experimental researches of the dynamic tensile mechanical properties are mainly indirect by brazil disc test and spalling. This paper describes the dynamic direct tensile test for concrete by the Split Hopkinson Tension Bar （SHTB） apparatus, and introduces the connection of specimen and the loading of stress wave. And analysis and research on the judgment of the failure mode for the specimen with low loading rate are put forward in this work.
出处
《舰船电子工程》
2013年第6期156-158,165,共4页
Ship Electronic Engineering
基金
国家自然科学基金项目(编号:51178462)资助
