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| 1 | Modeling of multi-inclusion composites with interfacial imperfections:Micromechanical and numerical simulations显示文摘A micromechanical approach based on a two-layer built-in model and a numerical simulation based on boundary element method are proposed to predict the effective properties of the multi-inclusion composite with imperfect interfaces.The spring model is introduced to simulate the interface imperfection.These two methods are compared with each other,and good agreement is achieved.The effects of interface spring stiffness,volume ratio and stiffness of inclusions on the micro-and macro-mechanical behaviors of fiber-reinforced composites are investigated.It is shown that the developed micromechanical method is very comprehensive and efficient for fast prediction of effective properties of composites,while the numerical method is very accurate in detailed modeling of the mechanical behavior of composites with multiple inclusions. | CHEN WeiQiu 1,ZHU XingYi 2 &HUANG ZhiYi 2 1 Department of Engineering Mechanics,Yuquan Campus,Zhejiang University,Hangzhou 310027,China 2 Key Laboratory of Soft Soils and Geoenvironmental Engineering,Ministry of Education Department of Civil Engineering,Zijingang Campus,Zhejiang University,Hangzhou 310058,China | 2010 | Science China(Technological Sciences)2010，53，3： | 8 |
| 2 | Fast multipole boundary element analysis of 2D viscoelastic composites with imperfect interfaces显示文摘A fast multipole boundary element method(FMBEM)is developed for the analysis of 2D linear viscoelastic composites with imperfect viscoelastic interfaces.The transformed fast multipole formulations are established using the time domain method. To simulate the viscoelastic behavior of imperfect interfaces that are frequently encountered in practice,the Kelvin type model is introduced.The FMBEM is further improved by incorporating naturally the interaction among inclusions as well as eliminating the phenomenon of material penetration.Since all the integrals are evaluated analytically,high accuracy and fast convergence of the numerical scheme are obtained.Several numerical examples,including planar viscoelastic composites with a single inclusion or randomly distributed multi-inclusions are presented.The numerical results are compared with the developed analytical solutions,which illustrates that the proposed FMBEM is very efficient in determining the macroscopic viscoelastic behavior of the particle-reinforced composites with the presence of imperfect interfaces.The laboratory measurements of the mixture creep compliance of asphalt concrete are also compared with the prediction by the developed model. | ZHU XingYi 1 ,CHEN WeiQiu 2 ,HUANG ZhiYi 1* &LIU YiJun 3 1 Department of Civil Engineering,Zhejiang University,Zijingang Campus,Hangzhou 310058,China 2 Department of Engineering Mechanics,Zhejiang University,Yuquan Campus,Hangzhou 310027,China 3Department of Mechanical Engineering,University of Cincinnati,Cincinnati,Ohio 45221-0072,USA | 2010 | Science China(Technological Sciences)2010，53，8： | 7 |
| 3 | Controllable wave propagation in a weakly nonlinear monoatomic lattice chain with nonlocal interaction and active control显示文摘The one-dimensional monoatomic lattice chain connected by nonlinear springs is investigated, and the asymptotic solution is obtained through the Lindstedt-Poincar′e perturbation method. The dispersion relation is derived with the consideration of both the nonlocal and the active control effects. The numerical results show that the nonlocal effect can effectively enhance the frequency in the middle part of the dispersion curve.When the nonlocal effect is strong enough, zero and negative group velocities will be evoked at different points along the dispersion curve, which will provide different ways of transporting energy including the forward-propagation, localization, and backwardpropagation of wavepackets related to the phase velocity. Both the nonlinear effect and the active control can enhance the frequency, but neither of them is able to produce zero or negative group velocities. Specifically, the active control enhances the frequency of the dispersion curve including the point at which the reduced wave number equals zero, and therefore gives birth to a nonzero cutoff frequency and a band gap in the low frequency range. With a combinational adjustment of all these effects, the wave propagation behaviors can be comprehensively controlled, and energy transferring can be readily manipulated in various ways. | Jiao WANG Weijian ZHOU Yang HUANG Chaofeng LYU Weiqiu CHEN Weiqiu ZHU | 2018 | Applied Mathematics and Mechanics(English Edition)2018，39，8： | 2 |
| 4 | Investigation of oil vapor emission and its evaluation methods显示文摘 | HUANG Weiqiu BAI Juan ZHAO Shuhua | 2011 | Journal of Loss Prevention in the Process Industries2011，24，2： | 1 |
| 5 | Investigation of oil vapor emission and its evaluation methods显示文摘 | Huang Weiqiu Bai Juan Zhao Shuhua | 2011 | J Loss Prevent Process Ind2011，24，2： | 1 |
| 6 | Influence of Wind Deviation Angle on n-Hexane Evaporation Loss of Internal Floating-Roof Tanks显示文摘With the increasing attention to environmental protection,it is still necessary to strictly control the oil evaporation loss from the IFRT(internal floating-roof tank)to the atmosphere.Upon using n-hexane as a representative of light oil,the effects of the WDAs(wind deviation angles)on airflow distribution,the wind speed,the n-hexane vapor concentration,and the evaporation loss rate in the IFRT were investigated,and the mass transfer of the vapor-air was analyzed.The results are shown as follows:when the WDA is 0°,the vapor concentration in the gas space above the floating deck is the lowest;when the WDA is 22.5°,the oil evaporation loss rate is the largest;when the WDA is 45°,the vapor concentration is the highest,but the evaporation loss rate is the smallest.It is recommended to arrange the vent to the wind direction with an angle of 45°to reduce the evaporation loss and protect the atmospheric environment. | Huang Weiqiu Xu Manlin Li Fei Ji Hong Fang Jie | 2020 | China Petroleum Processing & Petrochemical Technology2020，22，2： | 1 |
| 7 | Investigation of oil vapor emission and its evaluation methods显示文摘 | Huang Weiqiu Bai Juan Zhao Shuhua | 2011 | Journal of Loss Prevention in the Process Industries2011，24，2： | 1 |
| 8 | Stochastic averaging of strongly non-linear oscillators under combined harmonic and white-noise excitations显示文摘 | Huang Zhilong Zhu Weiqiu Suzuki Y | 2000 | Journal of Sound and Vibration2000，238，2： | 1 |
| 9 | Response and stability of strongly non-linear oscillators under wide- band random excitation 显示文摘 | Zhu Weiqiu Huang Zhilong Suzuki Y | 2001 | International Journal of Non-Linear Mechanics2001，36，8： | 1 |
| 10 | Investigation of oil vapor emission and its evaluation methods显示文摘 | Huang Weiqiu Bai Juan Zhao Shuhua | 2011 | J Loss Prevention Process Ind2011，24，2： | 1 |
| 11 | Investigation of oil vapor emission and its evaluation methods显示文摘 | Weiqiu Huang Juan Bai Shuhua Zhao Aihua Lv | 2010 | Journal of Loss Prevention in the Process Industries2010，，2： | 1 |
| 12 | First passage failure of quasi integrable Hamiltonian system显示文摘 | ZHU Weiqiu DENG Maolin HUANG Zhilong | | 0，，3： | 1 |
| 13 | Tailoring edge and interface states in topological metastructures exhibiting the acoustic valley Hall effect显示文摘In this study, we investigate the acoustic topological insulator or topological metastructure, where an acoustic wave can exist only in an edge or interface state instead of propagating in bulk. Breaking the structural symmetry enables the opening of the Dirac cone in the band structure and the generation of a new band gap, wherein a topological edge or interface state emerges.Further, we systematically analyze two types of topological states that stem from the acoustic valley Hall effect mechanism;one type is confined to the boundary, whereas the other type can be observed at the interface between two topologically different structures. Results denote that the selection of different boundaries along with appropriately designed interfaces provides the acoustic waves in the band gap range with abilities of one-way propagation, dual-channel propagation, immunity from backscattering at sharp corners, and/or transition between propagation at interfaces and boundaries. Furthermore, we show that the acoustic wave propagation paths can be tailored in diverse and arbitrary ways by combing the two aforementioned types of topological states. | Jiao Wang Yang Huang WeiQiu Chen | 2020 | Science China(Physics,Mechanics & Astronomy)2020，63，2： | 1 |
| 14 | Interaction energy of interface dislocation loops in piezoelectric bi-crystals显示文摘Interface dislocations may dramatically change the electric properties,such as polarization,of the piezoelectric crystals.In this paper,we study the linear interactions of two interface dislocation loops with arbitrary shape in generally anisotropic piezoelectric bi-crystals.A simple formula for calculating the interaction energy of the interface dislocation loops is derived and given by a double line integral along two closed dislocation curves.Particularly,interactions between two straight segments of the interface dislocations are solved analytically,which can be applied to approximate any curved loop so that an analytical solution can be also achieved.Numerical results show the influence of the bi-crystal interface as well as the material orientation on the interaction of interface dislocation loops. | Jianghong Yuan Yin Huang Weiqiu Chen Ernian Pan | 2017 | Theoretical & Applied Mechanics Letters2017，7，2： | 0 |
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