Ramkumar Gunasekaran, Gnanaprakasam Arul Jesu, Thirumarimurugan Marimuthu
Department of Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore 641014, India.
Department of Chemical Engineering, Coimbatore Institute of Technology, Coimbatore 641014, India.
Materials (Basel). 2021 Sep 2;14(17):5024. doi: 10.3390/ma14175024.
The stiffness and damping of a flexible smart cantilever structure controlled by a magnetic field is investigated in this research. The cantilever structure is fabricated by using flexible polyvinyl chloride as a host structure of rectangular cross-section embedded with magnetorheological (MR) fluid. The deflection of the cantilever structure at the free end is used to analyze the stiffness change of the cantilever structure. The stiffness of the specimen with MR fluid at magnetic flux density of 0.171 T is greater than that of the specimen without subjected to magnetic field. The strength of the applied magnetic field is directly related to the structure's stiffness. Under the influence of a magnetic field, the MR fluid embedded inside the flexible PVC cantilever structure significantly dampens the vibrations of the structure.
本研究对由磁场控制的柔性智能悬臂结构的刚度和阻尼进行了研究。悬臂结构采用柔性聚氯乙烯制作，作为嵌入磁流变（MR）流体的矩形截面主体结构。利用悬臂结构自由端的挠度来分析悬臂结构的刚度变化。在磁通密度为0.171 T时，含有MR流体的试样刚度大于未施加磁场的试样。施加磁场的强度与结构的刚度直接相关。在磁场影响下，嵌入柔性PVC悬臂结构内部的MR流体显著抑制了结构的振动。
