【摘要】 电流变体是智能材料系统中重要的驱动器材料之一.本文首先简单回顾了电流变体及其工程应用的研究现状,对含电流变体复合材料的研究进展进行了综合论述,并系统分析了电流变体在土木工程结构振动控制领域应用的2种类型:即电流变体阻尼器和将电流变体直接埋置到基体砂浆中做成复合构件.在此基础上,系统总结了利用电流变体作为驱动元件与基体砂浆材料结合制成智能悬臂梁结构的试验和理论研究进展,包括:电流变体复合于砂浆材料中的可行性和工艺,采用瞬态激振法测定智能复合梁结构频率随电场强度的演化规律,利用分析裂纹梁动态响应的方法对含电流变体的砂浆悬臂梁振动模型的模拟,并提出了今后研究应重点解决的问题.更多还原

【Abstract】 Electrorheological(ER) fluid is a potential material for the application in the field of intelligent materials and structures.The state-of-the-art of the performance of ER fluid and its engineering application is briefly reviewed,and the development status on the civil engineering application of ER fluid is discussed.Two categories of civil engineering application of ER fluid,namely ER damper and ER material based adaptive structures,are summarized.Then the situation of development of experimental and theoretical investigation on the composite mortar cantilever with embedded ER fluid are summarized systemically,including the feasibility and operative technology of that the ER fluid was embedded in mortar directly,the evolution rule of frequencies under different electric field intensity through hammering test,and vibration models of composite cantilever beam filled with ER fluid based on cracked beam theory.Finally the problems that should be solved in the future are proposed.更多还原