【作者】 李宁； 黄姝珂； 胥永刚； 文玉华； 黄勇；

【Author】 LI Ning~1 HUANG Shu-ke~1 XU Yong-gang~2 WEN Yu-hua~1 HUANG Yong~1 (1.School of Manufacturing Science and Engineering,Sichuan University,Chengdu 610065,China; 2.State Key Laboratory of Mechanical System and Vibration,Shanghai Jiaotong University,Shanghai 200240,China)

【机构】 四川大学制造科学与工程学院； 上海交通大学机械系统与振动国家重点实验室；

【摘要】 研究了直流和交流磁场对 Fe-16Cr-2．5Mo 合金阻尼性能的影响,并通过观察磁畴结构的变化解释了阻尼性能变化的原因．结果表明：随着直流和交流磁场强度的增加,合金的阻尼性能都呈现先增加后下降的变化规律,但直流磁场时合金在0．08mT 达到最大值,而交流磁场时合金在0．03mT 达到最大值．另外在交流磁场作用下,合金阻尼性能峰值对应的应变振幅位置发生明显的左移．更多还原

【Abstract】 Effects of direct current and alternate current magnetic field on damping capacity of Fe-16Cr-2.5Mo alloy were studied.The phenomena were explained using the change of domain structure.The results indicated that with the direct current and alternate current magnetic field increasing,the damping capacity of alloy increases firstly and then decreases. The damping capacity reaches the maximum at 0.08mT in direct current magnetic field and reaches the maximum at 0.03mT in alternate current magnetic field.In addition,the strain amplitude at which the damping capacity reaches maximum moves to left obviously in alternate current magnetic field.更多还原