Controllable metamaterials and smart structures: Nonlinear problems, modelling and experiments

可控超材料和智能结构：非线性问题、建模和实验

• 批准号: 490743767
• 负责人: Professor Dr.-Ing. Alexander Popp
• 金额: --
• 依托单位: Institut für Mathematik und Computergestützte Simulation
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/490743767?language=en
• 关键词: Controllable; metamaterials; smart; structures; Nonlinear

The project aims to broaden the current concept of passive metamaterials (MM) in the form of periodical structures towards a new class of smart controllable MM, which open new perspectives for engineering applications. These new periodic structures are constituted by elastic and viscoelastic materials combined with controllable electroactive materials with piezoelectric, electro- and magnetostrictive properties. By incorporating such tailored electroactive components into the locally periodic microstructures, and by providing suitable mechanisms for their active control, it will be possible to tune dynamic properties of such new MM in time. Nonlinear response of electroactive MM and their behavior as controllable actuators in the context of controlling wave processes, internal attenuation, frequency bands and energy harvesting will be studied. Designing of such MM requires the synergy of multiscale and multi-physics continuum modelling, homogenization, advanced numerical methods, optimization and experimental validation.

该项目旨在将当前周期性结构形式的无源超材料（MM）概念拓展为新型智能可控MM，为工程应用开辟新的前景。这些新的周期结构由弹性和粘弹性材料与具有压电、电致伸缩和磁致伸缩特性的可控电活性材料相结合构成。通过将这种定制的电活性成分结合到局部周期性微结构中，并为其主动控制提供合适的机制，将有可能及时调整这种新型MM的动态特性。将研究电活性MM的非线性响应及其作为可控执行器在控制波过程、内部衰减、频带和能量收集方面的行为。这种MM的设计需要多尺度和多物理连续介质建模、均质化、先进数值方法、优化和实验验证的协同作用。