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| 1 | An identification method for enclosed voids restriction in manufacturability design for additive manufacturing structures显示文摘生产的添加剂(AM ) 技术例如选择激光 sintering (SLS )( 频分多路复用) 并且熔化免职建模,为复杂部分的直接生产成为了强大的工具。在生产技术的这突破做新几何特征和可能的多重材料的制造。经过关于经常集中于怎么获得结构或部分的需要的功能的性能的图案和设计方法的研究,象生产 AM 的限制一样的特定的生产能力被忽视。然而,在 AM 过程的固有的限制应该在设计过程被考虑。在这篇论文,围住的虚空,生产 AM 的限制的一种类型,被调查。在数学,因为稳固的结构是 simplyconnected,围住表示的虚空限制。我们建议对为避免的简单地连接的限制的相等的描述在结构围住虚空,命名同样虚拟的温度方法(VTM ) 。在这个方法,假定在结构的虚空与高热电导率充满虚拟加热材料,稳固的区域与低热电导率充满另一虚拟材料。一旦围住的虚空在结构存在,结构的最大的温度价值将很高。在这个方法之上基于, simplyconnected 限制等价于最大的温度限制。并且这个方法能容易被用来在拓扑学优化提出简单地连接的限制。这个描述方法的有效性被几个例子说明。在拓扑学之上基于优化, 3D 伸臂横梁的一个例子被用来说明在 manufacturability 和功能之间的交易。而且,三优化结构被频分多路复用技术制作进一步显示为 AM 在设计阶段考虑简单地连接的限制的必要性。 | Shutian LIU Quhao LI Wenjiong CHEN Liyong TONG Gengdong CHENG | 2015 | Frontiers of Mechanical Engineering2015，10，2： | 18 |
| 2 | A Realization Method for Transforming a Topology Optimization Design into Additive Manufacturing Structures显示文摘 | Shutian Liu Quhao Li Junhuan Liu Wenjiong Chen Yongcun Zhang | 2018 | Engineering2018，4，2： | 16 |
| 3 | Age of granulite from Huangtuling, Dabie Mountain:Pb-Pb dating of garnet by a stepwise dissolution technique显示文摘A new stepwise dissolution scheme, involving acids with different properties, enables the selective recovery of radiogenic and common Pb from a mineral, and makes single-mineral Pb-Pb dating possible. Garnet from a granulite sample from Huangtuling, northern Dabie Mountain yields a Pb-Pb isochron age of (1098 ± 35) Ma, which is interpreted as the timing of peak metamorphism of granulite facies. | Hanwen Zhou Xianhua Li Ying Liu Zhendong You Shutian Suo Zengqiu Zhong | 1999 | Chinese Science Bulletin1999，44，10： | 15 |
| 4 | A Gradient-Based Optimization Method for the Design of Layered Phononic Band-Gap Materials显示文摘Phononic materials with specific band-gap characteristics at desired frequency ranges are in great demand for vibration and noise isolation, elastic wave filters, and acoustic devices.The attenuation coefficient curve depicts both the frequency range of band gap and the attenuation of elastic wave, where the frequency ranges corresponding to the none-zero attenuation coefficients are band gaps. Therefore, the band-gap characteristics can be achieved through maximizing the attenuation coefficient at the corresponding frequency or within the corresponding frequency range. Because the attenuation coefficient curve is not smooth in the frequency domain,the gradient-based optimization methods cannot be directly used in the design optimization of phononic band-gap materials to achieve the maximum attenuation within the desired frequency range. To overcome this difficulty, the objective of maximizing the attenuation coefficient is transformed into maximizing its Cosine, and in this way, the objective function is smoothed and becomes differentiable. Based on this objective function, a novel gradient-based optimization approach is proposed to open the band gap at a prescribed frequency range and to further maximize the attenuation efficiency of the elastic wave at a specific frequency or within a prescribed frequency range. Numerical results demonstrate the effectiveness of the proposed gradient-based optimization method for enhancing the wave attenuation properties. | Yu Huang Shutian Liu Jian Zhao | 2016 | Acta Mechanica Solida Sinica2016，29，4： | 7 |
| 5 | The optimization model of the heat conduction structure显示文摘An optimization model considering a novel thermal performance index to be the objective function is proposed for minimizing the highest temperature in this paper.Firstly,the performance of the conventional heat conduction optimization model,with the dissipation of heat transport potential capacity as the objective function,is evaluated by a one-dimensional heat conduction problem in a planar plate exchanger.Then,a new thermal performance index,named the geometric average temperature,is introduced.The new heat con-duction optimization model,with the geometric average temperature as the objective function,is developed and the corresponding finite element formula is presented.The results show that the geometric average temperature is an ideal thermal performance index and the solution of the new model is close to the theoretical optimal solution. | Yongcun Zhang Shutian Liu | 2008 | Progress in Natural Science:Materials International2008，18，6： | 6 |
| 6 | A novel implementation algorithm of asymptotic homogenization for predicting the effective coefficient of thermal expansion of periodic composite materials显示文摘Asymptotic homogenization(AH) is a general method for predicting the effective coefficient of thermal expansion(CTE) of periodic composites. It has a rigorous mathematical foundation and can give an accurate solution if the macrostructure is large enough to comprise an infinite number of unit cells. In this paper, a novel implementation algorithm of asymptotic homogenization(NIAH) is developed to calculate the effective CTE of periodic composite materials. Compared with the previous implementation of AH, there are two obvious advantages. One is its implementation as simple as representative volume element(RVE).The new algorithm can be executed easily using commercial finite element analysis(FEA) software as a black box. The detailed process of the new implementation of AH has been provided. The other is that NIAH can simultaneously use more than one element type to discretize a unit cell, which can save much computational cost in predicting the CTE of a complex structure. Several examples are carried out to demonstrate the effectiveness of the new implementation.This work is expected to greatly promote the widespread use of AH in predicting the CTE of periodic composite materials. | Yongcun Zhang Shipeng Shang Shutian Liu | 2017 | Acta Mechanica Sinica2017，33，2： | 6 |
| 7 | Arbitrary focusing lens by holographic metasurface显示文摘In this paper, an ultrathin metalens has been proposed based on a holographic metasurface that consists of elongated apertures in 40 nm gold film, which exhibit intriguing properties such as on-and off-axis focusing and also can concentrate light into multiple, discrete spots for circularly polarized incident lights. First, the spatial transmission phase distributions of the designed metalens with arbitrary focusing can be obtained by computergenerated holography. Then, the discrete phase distributions can be continuously encoded by subwavelength nanoapertures with spatially varying orientations in gold film. The simulation results show that our designed metalens can work efficiently for different types of focusing. Finally, our metasurface shows superior broadband characteristics between 670 and 810 nm, and the corresponding focal lengths of the designed lenses also can be efficiently modulated with the incident lights at different wavelengths. | Rongzhen Li Zhongyi Guo Wei Wang Jingran Zhang Keya Zhou Jianlong Liu Shiliang Qu Shutian Liu Jun Gao | 2015 | Photonics Research2015，3，5： | 6 |
| 8 | Structural Evidence for the in-situ Origin of the HP and UHP Eclogites in the Dabie-Sulu Orogenic Belt显示文摘Whether the HP and UHP metamorphic rocks of the Dabie-Sulu orogenic belt are of an 'in-situ' or 'foreign' origin is a long-standing dispute among geologists. Eclogites preserved today in the HP and UHP units constitute merely 5-10%, which are not isolated exotic bodies tectonically intruding into amphibolite facies gneiss, but remnants of once pervasive or widespread eclogite-facies terranes or slabs. The present spatial distribution and forms of the eclogites have resulted from polyphase and progressive deformation and strain partitioning of the HP and UHP slabs. From their formation in deep mantle to their exhumation to the surface, the eclogites have experienced long-term deformation with different strain regimes. The dominant regime responsible for the present spatial distribution and forms of the eclogites is the shear process. The deformation patterns of the eclogites and gneiss matrix also clearly show that the eclogites were metamorphosed in situ. The original distribution area of the eclogites is much larger than that seen today. | ZHONG Zengqiu, YANG Qijun, SUO Shutian, ZHOU Hanwen and YOU Zhendong China University of Geosciences, Wuhan, Hubei 430074 E-mail: zqzhong@cug.edu.cn Hao Ziguo and Liu Xinzhu | 2003 | Acta Geologica Sinica(English Edition)2003，77，3： | 4 |
| 9 | Engineering of strong mechanical squeezing via the joint effect between Duffing nonlinearity and parametric pump driving显示文摘Previous works for achieving mechanical squeezing focused mainly on the sole squeezing manipulation method.Here we study how to construct strong steady-state mechanical squeezing via the joint effect between Duffing nonlinearity and parametric pump driving. We find that the 3 d B limit of strong mechanical squeezing can be easily overcome from the joint effect of two different below 3 d B squeezing components induced by Duffing nonlinearity and parametric pump driving, respectively, without the need of any extra technologies, such as quantum measurement or quantum feedback. We first demonstrate that, in the ideal mechanical bath, the joint squeezing effect just is the superposition of the two respective independent squeezing components. The mechanical squeezing constructed by the joint effect is fairly robust against the mechanical thermal noise. Moreover, different from previous mechanical squeezing detection schemes, which need to introduce an additional ancillary cavity mode, the joint mechanical squeezing effect in the present scheme can be directly measured by homodyning the output field of the cavity with an appropriate phase. The joint idea opens up a new approach to construct strong mechanical squeezing and can be generalized to realize other strong macroscopic quantum effects. | Cheng-Hua Bai Dong-Yang Wang Shou Zhang Shutian Liu Hong-Fu Wang | 2019 | Photonics Research2019，7，11： | 3 |
| 10 | Design of multi-layered porous fibrous metals for optimal sound absorption in the low frequency range显示文摘We present a design method for calculating and optimizing sound absorption coefficient of multi-layered porous fibrous metals(PFM) in the low frequency range. PFM is simplified as an equivalent idealized sheet with all metallic fibers aligned in one direction and distributed in periodic hexagonal patterns. We use a phenomenological model in the literature to investigate the effects of pore geometrical parameters(fiber diameter and gap) on sound absorption performance. The sound absorption coefficient of multilayered PFMs is calculated using impedance translation theorem. To demonstrate the validity of the present model, we compare the predicted results with the experimental data. With the average sound absorption(low frequency range) as the objective function and the fiber gaps as the design variables,an optimization method for multi-layered fibrous metals is proposed. A new fibrous layout with given porosity of multi-layered fibrous metals is suggested to achieve optimal low frequency sound absorption.The sound absorption coefficient of the optimal multi-layered fibrous metal is higher than the singlelayered fibrous metal, and a significant effect of the fibrous material on sound absorption is found due to the surface porosity of the multi-layered fibrous. | Wenjiong Chen Shutian Liu Liyong Tong Sheng Li | 2016 | Theoretical & Applied Mechanics Letters2016，6，1： | 3 |
| 11 | Highly efficient vectorial field manipulation using a transmitted tri-layer metasurface in the terahertz band显示文摘Polarization is a basic characteristic of electromagnetic waves that conveys much optical information owing to its many states.The polarization state is manipulated and controlled for optical information security,optical encryption,and optical communication.Metasurface devices provide a new way to manipulate wave-fronts of light.A single ultrathin metasurface device can generate and modulate several differently polarized light fields,and thus carries optical information in several different channels.Terahertz(THz)waves have become widely used as carrier waves for wireless communication.Compact and functional metasurface devices are in high demand for THz elements and systems.This paper proposes a tri-layer metallic THz metasurface for multi-channel polarization generation and phase modulation with a high efficiency of approximately 80%.An azimuthally polarized THz vectorial beam generator is realized and characterized for use as a THz polarization analyzer.The incident polarization angle can be observed graphically with high accuracy.Moreover,a vectorial hologram with eight channels for different linear polarization states is demonstrated experimentally.The information in different holograms can be hidden by choosing the polarization channel for detection.This work contributes to achieving multi-functional metasurface in the THz band and can benefit THz communication and optical information security. | Huan Zhao Xinke Wang Shutian Liu Yan Zhang | 2023 | Opto-Electronic Advances2023，6，2： | 2 |
| 12 | Applying DNA Barcoding to Identify Actinidia in the Northeast of China显示文摘Identification of kiwifruit germplasm materials is the basis of protecting and utilizing these resources. However,identifying Actinidia arguta varieties based on morphology is difficult,especially for non-specialists. In this study,we collected 180 specimens comprising 60 varieties of three species( A. arguta,A. kolomikta,and A. polygama) from the Northeast of China. The emphasis of our study was on the feasibility of identifying A. arguta varieties. Here,we used common analysis methods( genetic distance,phylogenetic analysis and the DNA barcoding gap) and SNPs analysis to evaluate the discriminatory power of different DNA barcoding markers. The results revealed that common methods were insufficient to identify A. arguta varieties but SNPs analysis based on DNA barcoden was the potential method for identifying A. arguta varieties. Besides,Our study agree that DNA barcoding could be used to analysis the evaluation genetic relationship of the Actinidia plants. | haishuang liu hongyan qin jun ai huifang song yiming yang shutian fan peilei xu guangli shi changyu li | 2018 | Agricultural Biotechnology2018，7，2： | 2 |
| 13 | Dissipation-induced topological phase transition and periodic-driving-induced photonic topological state transfer in a small optomechanical lattice显示文摘We propose a scheme to investigate the topological phase transition and the topological state transfer based on the small optomechanical lattice under the realistic parameters regime.We find that the optomechanical lattice can be equivalent to a topologically nontrivial Su-Schrieffer Heeger(SSH)model via designing the effective optomechanical coupling.Especially,the optomechanical lattice experiences the phase transition between topologically nontrivial SSH phase and topologically trivial SSH phase by controlling the decay of the cavity field and the opto mechanical coupling.We stress that the to pological phase transition is mainly induced by the decay of the cavity field,which is counter-intuitive since the dissipation is usually detrimental to the system.Also,we investigate the photonic state transfer between the two cavity fields via the topologically protected edge channel based on the small optomechanical lattice.We find that the quantum st ate transfer assisted by the topological zero energy mode can be achieved via implying the external lasers with the periodical driving amplitudes into the cavity fields.Our scheme provides the fundamental and the insightful explanations towards the mapping of the photonic topological insulator based on the micro-nano optomechanical quantum optical platform. | Lu Qi Guo-Li Wang Shutian Liu Shou Zhang Hong-Fu Wang | 2021 | Frontiers of physics2021，16，1： | 2 |
| 14 | MoM-based topology optimization method for planar metallic antenna design显示文摘The metallic antenna design problem can be treated as a problem to find the optimal distribution of conductive material in a certain domain. Although this problem is well suited for topology optimization method, the volumetric distribution of conductive material based on 3D finite element method(FEM) has been known to cause numerical bottlenecks such as the skin depth issue, meshed 'air regions'and other numerical problems. In this paper a topology optimization method based on the method of moments(Mo M)for configuration design of planar metallic antenna was proposed. The candidate structure of the planar metallic antenna was approximately considered as a resistance sheet with position-dependent impedance. In this way, the electromagnetic property of the antenna can be analyzed easily by using the MoM to solve the radiation problem of the resistance sheet in a finite domain. The topology of the antenna was depicted with the distribution of the impedance related to the design parameters or relative densities. The conductive material(metal) was assumed to have zero impedance, whereas the non-conductive material was simulated as a material with a finite but large enough impedance. The interpolation function of the impedance between conductive material and non-conductive material was taken as a tangential function. The design of planar metallic antenna was optimized for maximizing the efficiency at the target frequency. The results illustrated the effectiveness of the method. | Shutian Liu Qi Wang Renjing Gao | 2016 | Acta Mechanica Sinica2016，32，6： | 2 |
| 15 | Concurrent topology optimization design of stiffener layout and cross-section for thin-walled structures显示文摘Stiffened plates or shells are widely used in engineering structures as primary or secondary load-bearing components.How to design the layout and sizes of the stiffeners is of great significance for structural lightweight.In this work,a new topology optimization method for simultaneously optimizing the layout and cross-section topology of the stiffeners is developed to solve this issue.The stilfeners and base plates are modeled by the beam and shell elements,respectively,significantly reducing the computational cost.The Giavotto beam theory,instead of the widely employed Euler or Timoshenko beam theory,is applied to model the stiffeners for considering the warping deformation in evaluating the section stiffness of the beam.A multi-scale topology optimization model is established by simultaneously optimizing the layout of the beam and the topology of the cross-section.The design space is significantly expanded by optimizing these two types of design variables.Several numerical examples are applied to illustrate the validity and effectiveness of the proposed method.The results show that the proposed two-scale optimization approach can generate better designs than the single-scale method. | Quhao Li Yongxin Qu Yunfeng Luo Shutian Liu | 2021 | Acta Mechanica Sinica2021，37，3： | 2 |
| 16 | Sliced orthogonal nonlinear generalized decomposition based fringe-adjusted joint transform correlation 显示文摘 | Qu Wang Haifa Zhao Shutian Liu | 2004 | Optik2004，115，9： | 1 |
| 17 | Optical image encryption based on multifractional Fourier transforms 显示文摘 | Banghe Zhu Shutian Liu Qiwen Ran | 2000 | Opt Lett2000，25，16： | 1 |
| 18 | Double image encryption based on iterative fractional Fourier transform显示文摘 | Liu Zhengjun Liu Shutian | 2007 | Opt Commun2007，275，2： | 1 |
| 19 | Double image encryption based on iterative fractional Fourier transform显示文摘 | LIU Zhengjun LIU Shutian | | 0，，02： | 1 |
| 20 | Soil quality assessment of Albic soils with different productivities for eastern China显示文摘 | Zhanjun Liu Wei Zhou Jianbo Shen Shutian Li Ping He Guoqing Liang | 2014 | Soil & Tillage Research2014，，： | 1 |
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