基于Terfenol-D的多铁性磁电复合材料的磁-弹-电耦合与迟滞行为研究

项目名称： 基于Terfenol-D的多铁性磁电复合材料的磁-弹-电耦合与迟滞行为研究

项目编号： No.11302206

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 王天忠

作者单位： 中国工程物理研究院总体工程研究所

项目金额： 27万元

中文摘要： 基于Terfenol-D的多铁性磁电复合材料因其超高的磁电转换性能在传感技术、信息技术、微机电系统等现代高新技术领域存在广泛的应用，作为一类新型多功能材料于近十年成为学术界和工程界的研究热点。本项目在项目申请人已有研究成果的基础上，针对多铁性磁电复合材料自身固有的非线性的磁-弹-电耦合行为与迟滞行为开展研究，拟采用理论建模、数值仿真和实验验证相结合的方法建立定量预测复合材料磁电转换性能的精确理论模型- - 磁-弹-电耦合的非线性迟滞模型，开发求解多值强非线性多场耦合问题的数值仿真程序，重点研究磁滞损耗、电滞损耗、机械损耗和界面滑移损耗对多铁性磁电复合材料迟滞行为的影响，给出已有模型的理论预测值明显高于实验测量值的合理解释，从而为基于Terfenol-D的多铁性磁电复合材料的性能表征和优化设计提供理论指导，最终为高精度、高性能的新型磁电多功能器件的研发奠定理论基础。

中文关键词： 多铁性；磁电效应；磁-弹-电耦合；迟滞；非线性

英文摘要： As a new type of multifunctional materials, Terfenol-D-based multiferroic magnetoelectric composites have stimulated a sharply increasing number of academic and engineering research activities in recent decades, due to their giant magnetoelectric effects, which have been widely used in the modern new high-tech fields, such as sensing technology, information technology, microelectromechanical system, and so on. Based on the existing research results of the proposer, the nonlinear magnetic-elastic-electric coupling behavior and hysteresis behavior inherent to multiferroic magnetoelectric composites are investigated in this project. A nonlinear hysteresis model with magnetic-elastic-electric coupling effects, which can predict the magnetoelectric effects of the composites in quantity, is established for Terfenol-D-based multiferroic magnetoelectric composites, in which theoretical derivation and numerical simulation as well as experimental verification are all used. Accordingly, the numerical simulation program is proposed for solving the multivalued strongly nonlinear multi-fields coupling problem. In this project, the influences of the magnetic, electric and mechanical losses as well as interface slipping loss on the hysteresis behavior of the multiferroic magnetoelectric composites are mainly investigated by usi

英文关键词： Multiferroic；Magnetoelectricity；Magnetic-Elastic-Electric Coupling；Hysteresis；Nonlinearty