中文摘要：

传统被动支座受自身材料和结构性能限制,无法通过调节结构参数来抵抗大冲击振动力的破坏,其抗冲与耗能能力有限。将模量、阻尼损耗因子可调的磁敏弹性体引入到支座结构设计中,从抗冲防振的力学性能需求出发,兼顾考虑其机械和磁学性能,基于相似理论提出了剪切模式下的小尺度磁敏弹性体支座结构设计方法,利用Maxwell有限元软件对其磁路进行仿真优化,根据理论公式计算了刚度,并加工出小尺度支座样机,通过MTS测试机对其性能进行测试。结果表明,在外加可控激励电流条件下,磁敏弹性体支座的最大横向刚度和最大横向阻尼分别增加了43.9%、77.5%,理论刚度值与试验刚度值吻合较好,可望按该方法设计出支座来提高结构系统的抗冲隔振和耗能能力。

英文摘要：

Restricted by the material and the structural performance,the traditional bearing can’t adjust its structure parameters to resist the destruction of the vibrating force.The shock resistance and energy dissipation capacity are restricted.The magneto-rheological elastomeric （MRE ） with the adjustable modulus and the damping loss factor is introduced into the bearing structure design. Comprehensively considering the mechanical and magnetic performance,the structure design of small-scale magneto-rheological elastomeric bearing （MRB）based on the similarity theory is proposed.Magnetic circuit of the MRB is simulated with the software Maxwell.The theoretical stiffness of MRB is calculated on the theoretical formula.A small-scale MRB is designed and its performance is tested by MTS.The experiment shows that the stiffness and damping of the MRB can be increased by 43.9% and 77.5%,and the stiffness testing results are consistent with that of the theoretical model.Therefore,the vibration isolation performance of the structural system can be improved by using the MRB design method.