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首页> 外文会议>The 3rd International Symposium on Material Chemistry in Nuclear Environment (Material Chemistry '02 MC'02) Mar 13-15, 2002 Tsukuba >HIERARCHICAL MODELING OF ACTIVE MATERIALS
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HIERARCHICAL MODELING OF ACTIVE MATERIALS

机译：活性材料的层次建模

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摘要

Intelligent (or smart) materials are increasingly becoming key materials for use in actuators and sensors. If an intelligent material is used as a sensor, it can be embedded in a variety of structure functioning as a health monitoring system to make their life longer with high reliability. If an intelligent material is used as an active material in an actuator, it plays a key role of making dynamic movement of the actuator under a set of stimuli. This talk intends to cover two different active materials in actuators, (1) piezoelectric laminate with FGM microstructure, (2) ferromagnetic shape memory alloy (FSMA). The advantage of using the FGM piezo laminate is to enhance its fatigue life while maintaining large bending displacement, while that of use in FSMA is its fast actuation while providing a large force and stroke capability. Use of hierarchical modeling of the above active materials is a key design step in optimizing its microstructure for enhancement of their performance. I will discuss briefly hierarchical modeling of the above two active materials. For FGM piezo laminate, we will use both micromechanical model and laminate theory, while for FSMA, the modeling interfacing nano-structure, microstructure and macro-behavior is discussed.
机译：智能（或智能）材料正日益成为用于执行器和传感器的关键材料。如果将智能材料用作传感器，则可以将其嵌入用作健康监控系统的各种结构中，从而以高可靠性延长其寿命。如果将智能材料用作执行器中的活性材料，它在一组刺激下起使执行器动态运动的关键作用。本演讲旨在涵盖执行器中的两种不同的活性材料：（1）具有FGM微结构的压电层压板；（2）铁磁形状记忆合金（FSMA）。使用FGM压电层压板的优点是在保持较大弯曲位移的同时提高了疲劳寿命，而在FSMA中使用的优点是其快速致动，同时提供了很大的力和冲程能力。上述活性材料的分层建模的使用是优化其微观结构以增强其性能的关键设计步骤。我将简要讨论上述两种活性材料的分层建模。对于FGM压电层压板，我们将同时使用微力学模型和层压板理论，而对于FSMA，则讨论了纳米结构，微观结构和宏观行为的建模接口。

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