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学者姓名：刘星星
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Abstract ：
Noise reduction is essential in engineering applications, and flexible impedance tuning in acoustic metamaterials, which enables low-frequency broadband absorption, has garnered attention within the physics and engineering research communities. However, traditional acoustic metamaterials suffer from fixed absorption bands due to their rigid cavities. We break this limitation by replacing the cavity walls of a Helmholtz resonator with Kresling origami sheets, creating the first tristable origami-inspired acoustic metamaterial (OIAM), enabling dynamic absorption frequency tuning through structural reconfiguration. By integrating theoretical modeling, numerical simulations, and experimental validation, our research successfully illustrates that the OIAM achieves tunable absorption frequencies (149 Hz, 180 Hz, and 275 Hz) with alpha>0.95 at a subwavelength thickness of 1/22 lambda, corresponding to its three stable states-the first demonstration of state-switched broadband tuning in Kresling pattern origami. The truss model shows that the angle parameter affects the stable states of the OIAM, enabling modes such as zero-stiffness, bistability, and tristability, as seen in compression tests. Compared to a single unit, the four-unit parallel OIAM can effectively broaden the absorption bandwidth by 230%. The multi-stable properties enhance energy absorption, load-bearing capacity, and multifunctionality, while the foldable design ensures convenient installation and transportation. In summary, our flexible design offers an effective solution for engineering applications that demand tunable sound absorption and load-bearing capacity.
Keyword ：
Acoustic metamaterials Acoustic metamaterials Impedance tuning Impedance tuning Kresling pattern origami Kresling pattern origami Multistable structures Multistable structures Tristable property Tristable property Tunable sound absorption Tunable sound absorption
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| GB/T 7714 | Cai, Xiaoming , Zhang, Dongxing , Jia, Peipei et al. Origami-inspired acoustic metamaterial with tristable property and tunable sound absorption [J]. | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES , 2025 , 293 . |
| MLA | Cai, Xiaoming et al. "Origami-inspired acoustic metamaterial with tristable property and tunable sound absorption" . | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 293 (2025) . |
| APA | Cai, Xiaoming , Zhang, Dongxing , Jia, Peipei , Liu, Xingxing , Bi, Baodong , Guo, Qiuquan et al. Origami-inspired acoustic metamaterial with tristable property and tunable sound absorption . | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES , 2025 , 293 . |
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本实用新型提供了超声波阵列板，包括超声波换能器、驱动升压板以及超材料声透镜；所述超声波换能器板包括超声波换能器以及第一简易牛角；所述驱动升压板包括驱动芯片以及第二简易牛角；还包括驱动板电源以及超声波生成模块；应用本技术方案可实现聚焦的双点能够符合人手自然放置时所具有的弧度，完成更加逼真的触觉反馈；该换能器在传统的普通超声相控阵换能器基础上进行改良，将超材料声透镜附加在相控阵换能器上从而提高声焦点声压，同时由于该超材料声透镜是可控制的，因此在超声相控阵换能器焦点偏转时，可以通过改变超材料声透镜的内部结构实现焦点位置跟随相控阵换能器焦点位置改变，从而在不增加旁瓣声压的情况下实现焦点声压的提升。
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| GB/T 7714 | 白鸿柏 , 陈锦泉 , 刘星星 et al. 超声波阵列板 : CN202320416893.2[P]. | 2023-03-08 00:00:00 . |
| MLA | 白鸿柏 et al. "超声波阵列板" : CN202320416893.2. | 2023-03-08 00:00:00 . |
| APA | 白鸿柏 , 陈锦泉 , 刘星星 , 胡智炜 . 超声波阵列板 : CN202320416893.2. | 2023-03-08 00:00:00 . |
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The Jiles-Atherton model was widely used in the description of the system with hysteresis, and the solution for the model was important for real-time and high-precision control. The secant method was used for solving anhysteretic magnetization and its initial values were optimized for faster convergence. Then, the Fourth Order Runge-Kutta method was employed to solve magnetization and the required computation cycles were supplied for stable results. Based on the solving method, the effect of the nonzero initial magnetic field on the magnetization was discussed, including the commonly used linear model of the square of magnetization under the medium initial value. From computations, the proposed secant iteration method, with supplied optimal initial values, greatly reduced the iterative steps compared to the fixed-point iteration. Combined with the Fourth Order Runge-Kutta method under more than three cycles of calculations, stable hysteresis results with controllable precisions were acquired. Adjusting the initial magnetic field changed the result of the magnetization, which was helpless to promote the amplitude or improve the symmetry of magnetization. Furthermore, the linear model of the square of magnetization was unacceptable for huge computational errors. The proposed numerical solving method can supply fast and high-precision solutions for the Jiles-Atherton model and provide a basis for the application scope of typical linear assumption.
Keyword ：
initial magnetic field initial magnetic field Jiles-Atherton model Jiles-Atherton model numerical solving method numerical solving method Runge-Kutta method Runge-Kutta method secant method secant method square of magnetization square of magnetization
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| GB/T 7714 | Xue, Guangming , Bai, Hongbai , Li, Tuo et al. Numerical Solving Method for Jiles-Atherton Model and Influence Analysis of the Initial Magnetic Field on Hysteresis [J]. | MATHEMATICS , 2022 , 10 (23) . |
| MLA | Xue, Guangming et al. "Numerical Solving Method for Jiles-Atherton Model and Influence Analysis of the Initial Magnetic Field on Hysteresis" . | MATHEMATICS 10 . 23 (2022) . |
| APA | Xue, Guangming , Bai, Hongbai , Li, Tuo , Ren, Zhiying , Liu, Xingxing , Lu, Chunhong . Numerical Solving Method for Jiles-Atherton Model and Influence Analysis of the Initial Magnetic Field on Hysteresis . | MATHEMATICS , 2022 , 10 (23) . |
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Data-driven deep learning frameworks have significantly advanced the development of modern machine learning, and after achieving great success in the field of image, speech, and video recognition and processing, they have also begun to permeate other disciplines such as physics, chemistry, and the discovery of new drugs and new materials. Our work proposes a deep learning-based model consisting of two parts: a forward simulation network that contains a transposed convolutional network, up and down sampling blocks and dense layers can rapidly predict optical responses from metasurface structures, and an inverse design network that contains convolutional neural networks and dense layers can automatically construct metasurface based on the input optical responses. Our model assists in discovering the complex and non -intuitive relationship between the moth-eye metasurface and optical responses, and designs a metasurface with excellent optical properties (ultra-broadband anti-reflection or nonlinear function of reflectivity), while avoiding traditional time-consuming case-by-case numerical simulations in the metasurface design. This work provides a fast, practical, and robust method to study complex light-matter interactions and to accelerate the demand-based design of nanophotonic devices, opening a new avenue for the development of real nanophotonic applications.
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| GB/T 7714 | Du, Xudong , Zhou, Chengan , Bai, Hongbai et al. Inverse design paradigm for fast and accurate prediction of a functional metasurface via deep convolutional neural networks [J]. | OPTICAL MATERIALS EXPRESS , 2022 , 12 (10) : 4104-4116 . |
| MLA | Du, Xudong et al. "Inverse design paradigm for fast and accurate prediction of a functional metasurface via deep convolutional neural networks" . | OPTICAL MATERIALS EXPRESS 12 . 10 (2022) : 4104-4116 . |
| APA | Du, Xudong , Zhou, Chengan , Bai, Hongbai , Liu, Xingxing . Inverse design paradigm for fast and accurate prediction of a functional metasurface via deep convolutional neural networks . | OPTICAL MATERIALS EXPRESS , 2022 , 12 (10) , 4104-4116 . |
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The system stiffness of a negative stiffness membrane structure is widely investigated in metamaterial research, and some special performances have been achieved. While for acoustics, low-frequency absorption still remains a big issue, so in this work, a negative stiffness membrane structure with its theoretical calculation model and experimental verification of sound absorption is established. Moreover, the nonlinear stiffness changes of the thin film under different deformation conditions and different spacing between two permanent magnets are systematically analyzed, obtaining the theoretical stiffness analytical equation of the negative stiffness thin-film structure system. Combined with finite element simulation analysis, the stiffness variation rule and influencing factors of the negative stiffness membrane system are discussed. Specifically, the impact of the mass radius, mass thickness, and film thickness on the magnetic force and system stiffness is analyzed. Based on the acquired testing results, the proper addition of the magnetic suction structure will induce a shift of the absorption peak to a lower frequency region. This work provides useful insights for the further development of the low-frequency sound absorption theory and testing prototype with a negative stiffness membrane structure.
Keyword ：
acoustic-solid coupling acoustic-solid coupling low-frequency sound absorption low-frequency sound absorption magnetic-solid coupling magnetic-solid coupling negative magnetic stiffness negative magnetic stiffness thin film acoustic metamaterial thin film acoustic metamaterial
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| GB/T 7714 | Zheng, Xiaoyuan , Fu, Chenxu , Bai, Hongbai et al. Study of Low-Frequency Sound Absorption Based on Negative Stiffness Membrane Structure [J]. | SYMMETRY-BASEL , 2022 , 14 (9) . |
| MLA | Zheng, Xiaoyuan et al. "Study of Low-Frequency Sound Absorption Based on Negative Stiffness Membrane Structure" . | SYMMETRY-BASEL 14 . 9 (2022) . |
| APA | Zheng, Xiaoyuan , Fu, Chenxu , Bai, Hongbai , Lin, Zhu , Liu, Xingxing . Study of Low-Frequency Sound Absorption Based on Negative Stiffness Membrane Structure . | SYMMETRY-BASEL , 2022 , 14 (9) . |
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本实用新型涉及一种磁力测试装置，其特征在于：包括底板和设在底板上的导轨，所述导轨上设有两组滑块和分别设在滑块上的基座，所述基座内设有力传感器，在基座上还设有可拆连接的用于固定磁铁的磁铁套筒，所述底板或其中一组固定的滑块上设有激光位移传感器，其中一组移动的滑块上固定设有挡板。该磁力测试装置设计合理，有利于精确测试两磁铁之间的间距，以有利于提高测试的准确度。
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| GB/T 7714 | 白鸿柏 , 傅晨旭 , 吴乙万 et al. 磁力测试装置 : CN202122189960.5[P]. | 2021-09-10 . |
| MLA | 白鸿柏 et al. "磁力测试装置" : CN202122189960.5. | 2021-09-10 . |
| APA | 白鸿柏 , 傅晨旭 , 吴乙万 , 刘星星 , 马维佳 . 磁力测试装置 : CN202122189960.5. | 2021-09-10 . |
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本实用新型提供一种薄膜拉伸机构，包括底座及固定于底座上方的底盘，底盘沿圆周方向均匀布设有用于薄膜夹紧拉伸装置，夹紧拉伸装置包括固定于底盘周侧的导轨，导轨上滑动配合有由内向外依次滑动配合有夹具滑块及驱动滑块，夹具滑块上可拆连接有用于固定薄膜的压紧条，驱动滑块与夹紧滑块之间通过弹簧连接，底盘中部固定有固定轴，固定轴上套有轴套，轴套与驱动滑块之间通过摆动杆铰接连接，通过轴套的上移带动驱动滑块向底盘外侧移动拉动夹具滑块拉伸薄膜，拉伸机构在结构方面采用了精度较高的导轨滑块配合结构，可以很好的保证薄膜在拉伸时位移大小的精确度。
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| GB/T 7714 | 白鸿柏 , 傅晨旭 , 吴乙万 et al. 一种薄膜拉伸机构 : CN202122307346.4[P]. | 2021-09-23 . |
| MLA | 白鸿柏 et al. "一种薄膜拉伸机构" : CN202122307346.4. | 2021-09-23 . |
| APA | 白鸿柏 , 傅晨旭 , 吴乙万 , 刘星星 , 马维佳 . 一种薄膜拉伸机构 : CN202122307346.4. | 2021-09-23 . |
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本发明涉及一种超材料声透镜相控阵换能器及提升焦点声压的方法。包括相控阵超声换能器、及位于相控阵超声换能器上方的可拆装的超材料声透镜，通过可拆装的超材料声透镜，使得相控阵超声换能器焦点偏转时，可通过改变超材料声透镜的内部结构实现焦点位置跟随相控阵超声换能器焦点位置改变，从而在声焦点偏转时不增加旁瓣声压的情况下实现焦点声压的提升。本发明将超材料声透镜附加在相控阵超声换能器上从而提高声焦点声压；同时由于该超材料声透镜是可以拆装的，因此在相控阵超声换能器焦点偏转时，可通过改变超材料声透镜的内部结构实现焦点位置跟随相控阵超声换能器焦点位置改变，从而在声焦点偏转时不增加旁瓣声压的情况下实现焦点声压的提升。
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| GB/T 7714 | 任志英 , 李想 , 刘星星 et al. 一种超材料声透镜相控阵换能器及提升焦点声压的方法 : CN202111408114.6[P]. | 2021-11-25 . |
| MLA | 任志英 et al. "一种超材料声透镜相控阵换能器及提升焦点声压的方法" : CN202111408114.6. | 2021-11-25 . |
| APA | 任志英 , 李想 , 刘星星 , 陈锦泉 . 一种超材料声透镜相控阵换能器及提升焦点声压的方法 : CN202111408114.6. | 2021-11-25 . |
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本实用新型涉及一种超材料声透镜相控阵换能器。包括相控阵超声换能器、及位于相控阵超声换能器上方的可拆装的超材料声透镜，所述相控阵超声换能器为压电陶瓷按照预定方式呈阵列布置；所述超材料声透镜以聚苯乙烯基体为主体，聚苯乙烯基体上均匀分布着凹槽；不同圈的凹槽内填充高度比例不同的聚氨酯和聚苯乙烯。本实用新型将超材料声透镜附加在相控阵超声换能器上从而提高声焦点声压；同时由于该超材料声透镜是可以拆装的，因此在相控阵超声换能器焦点偏转时，可以通过改变超材料声透镜的内部结构实现焦点位置跟随相控阵超声换能器焦点位置改变，从而在声焦点偏转时不增加旁瓣声压的情况下实现焦点声压的提升。
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| GB/T 7714 | 任志英 , 李想 , 刘星星 et al. 一种超材料声透镜相控阵换能器 : CN202122903432.1[P]. | 2021-11-25 . |
| MLA | 任志英 et al. "一种超材料声透镜相控阵换能器" : CN202122903432.1. | 2021-11-25 . |
| APA | 任志英 , 李想 , 刘星星 , 陈锦泉 . 一种超材料声透镜相控阵换能器 : CN202122903432.1. | 2021-11-25 . |
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针对车辆在实际行驶过程中外界噪声的统计特性无法已知的问题,以车辆纵向动力学模型为基础,提出了自适应扩展卡尔曼滤波(adaptive extended Kalman filter,简称AEKF)的车辆质量及道路坡度估计算法。以动态估计车辆系统中的质量与坡度为研究对象,引入了旋转质量换算系数,建立车辆纵向动力学系统的状态空间模型,考虑了不同时刻的档位匹配与行驶特殊工况的处理。对系统状态方程进行离散化处理,得到系统状态方程与系统测量方程,在扩展卡尔曼滤波(extended Kalman filter,简称EKF)的基础上引入带遗忘因子的噪声统计估计器,通过AEKF对状态方程与测量方程实时更新,进行在...
Keyword ：
汽车质量 汽车质量 纵向动力学模型 纵向动力学模型 自适应扩展卡尔曼滤波 自适应扩展卡尔曼滤波 道路坡度 道路坡度 遗忘因子 遗忘因子
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| GB/T 7714 | 任志英 , 沈亮量 , 黄伟 et al. 基于AEKF的车辆质量与道路坡度实时估计 [J]. | 振动.测试与诊断 , 2020 , 40 (04) : 758-764,827 . |
| MLA | 任志英 et al. "基于AEKF的车辆质量与道路坡度实时估计" . | 振动.测试与诊断 40 . 04 (2020) : 758-764,827 . |
| APA | 任志英 , 沈亮量 , 黄伟 , 刘星星 . 基于AEKF的车辆质量与道路坡度实时估计 . | 振动.测试与诊断 , 2020 , 40 (04) , 758-764,827 . |
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