A review o n additive manufacturing of phononic crystals

声子晶体增材制造的研究进展 A review o n additive manufacturing of phononic crystals 张昭 ZHANG Zhao 1 first-author corresp zhangz@dlut.edu.cn 张磊 ZHANG Lei 1 郭江川 GUO Jiangchuan 1 姚欣欣 YAO Xinxin 1 谭治军 TAN Zhijun 1 大连理工大学运载工程与力学学部工程力学系工业装备结构分析国家重点实验室 大连理工大学运载工程与力学学部工程力学系工业装备结构分析国家重点实验室 State Key Laboratory of Structural Analysis for Industrial Equipment,Department of Engineering Mechanics,Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology State Key Laboratory of Structural Analysis for Industrial Equipment,Department of Engineering Mechanics,Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology 声子晶体是一种超材料,通过人工设计的结构单胞可以形成周期性结构阵列,实现从Hz到THz频率范围内波的调谐和控制,在工业领域具有良好的应用前景。通过声子晶体实现波的负折射、负反射、自准直等现象的定量控制需要设计具有复杂结构的声子晶体单胞,而增材制造为这种声子晶体提供了制备技术。文中回顾了声子晶体的发展和工业应用、声子晶体的增材制造技术及制造中面临的问题,探讨了增材制造工艺参数和声子晶体服役性能之间的关联性。通过相场法模拟了工艺参数对熔池凝固的影响,采用搅拌摩擦增材制造制备了声子晶体单胞,比较了加工工艺所导致的结构变形对声子晶体带隙特性的影响。研究表明,增材制造工艺会影响所制备声子晶体结构中材料的微观结构、力学性能、密度和结构变形等,从而使声子晶体的服役性能与理论设计出现偏差,对增材制造工艺的控形与控性有助于量化控制所制备声子晶体的服役性能和带隙特性。 Phononic crystals belong to metamaterial. Arrayed structures can be formed by the artificially designed unit cell in phononic crystals,which are used to tuning and control the waves from Hz to THz frequency domains. Phononic crystals have good application prospects in the industrial field. The quantitative controlling of the negative refraction,negative reflection and self-collimation of wave needs the design of phononic crystals with complex structures. Additive manufacturing is the most appropriate method to fabricate it. In this paper,the development and industrial application,the additive manufacturing and the manufacturing problems of phononic crystals were reviewed. The relationship between the additive manufacturing and the structural performance of phononic crystals was discussed. The effect of process parameters on melt pool solidification in additive manufacturing was simulated. The unit cell of phononic crystals was fabricated by friction stir additive manufacturing to show the effect of the distortions in manufacturing on band gap characteristics of phononic crystals. The comparison shows that the additive manufacturing can affect the microstructures,mechanical properties,densities and distortions in the fabrication of phononic crystals,which leads to the deviations of structural performance from the theoretical design. The controlling of the mechanical properties and geometrical precisions can help the quantitative controlling of the structural performance and band gap characteristics of the additive manufactured phononic crystals. 增材制造 数值模拟 相场法 变形 微观结构 additive manufacturing numerical simulation phase field method distortion microstructure O735;TB34 辽宁省自然科学基金资助项目（2019-KF-05-07） 2022-03-08 8 51