A type of new intelligent micro-deformation material called giant magnetostrictive materials (GMMs) has a wide range of potential applications in the field of micro-vibrations. In this paper, the dynamic response of the output force of GMMs is investigated, and their internal magnetic fields are simulated via the finite element analysis software ANSYS. A test system that primarily includes a force sensor, a GMM, and a DAQ card is constructed to study the dynamic response characteristics of the output force. By changing the applied current in the coils and the pre-tightening force applied on the GMMs, the dynamic response time of the output force is determined. The experimental results show that, when the current in the coils is less than 2.5 A, the response time of the output force decreases with the increase of the outer current. Additionally, the response time of the output force is related to the applied preload, and is the fastest when the preload reaches 300 N. Before the pre-pressure reaches 300 N, the response time of the output force is negatively correlated with the pre-pressure. Finally, when the pre-pressure exceeds 300 N, the response time of the output force becomes greater than before.

一种称为超磁致伸缩材料（GMM）的新型智能微变形材料在微振动领域具有广泛的潜在应用。本文研究了GMM输出力的动态响应，并通过有限元分析软件ANSYS模拟了它们的内部磁场。构建主要包括力传感器，GMM和DAQ卡的测试系统，以研究输出力的动态响应特性。通过改变线圈中的施加电流和施加在GMM上的预紧力，可以确定输出力的动态响应时间。实验结果表明，当线圈中的电流小于2.5 A时，输出力的响应时间随外电流的增加而减小。另外，输出力的响应时间与所施加的预紧力有关，并且在预紧力达到300 N时最快。在预压达到300 N之前，输出力的响应时间与预紧力呈负相关。最后，当预压力超过300 N时，输出力的响应时间变得比以前更长。