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| 1 | The electromagnetic wave experiment for CSES mission: Search coil magnetometer显示文摘The seismic activities on the Earth can produce a disturbance of the electromagnetic field and particles in the ionosphere. The search coil magnetometer(SCM) mounted on China Seismo-Electromagnetic satellite(CSES) is designed to measure the magnetic field fluctuation of low frequency electromagnetic waves in the frequency range of 10 Hz–20 k Hz. The SCM comprises a three-axis search coil sensor mounted on a 4.5 m boom and an electronic box inside satellite module. The sampling rate of the SCM is 51.2 k Hz and the time resolution of the power spectrum density(PSD) is 2 s. The frequency resolution is 12.5 Hz.There are three operation modes: survey, detailed survey and calibration. In the survey mode, the SCM can provide a PSD in the whole frequency range of 10 Hz–20 k Hz and wave forms in the low frequency range below 2 k Hz while in the detailed survey mode the SCM can provide both PSD and wave forms in the whole frequency range of 10 Hz–20 k Hz. The sensitivity of the SCM instrument is 5.0×10^(-4) n T Hz^(-1/2) at 10 Hz, 5.0×10^(–5) n T Hz^(-1/2) at 200 Hz, 3.4×10^(-5) n T Hz^(-1/2) at 2 k Hz and 1.1×10^(-4) n T Hz^(-1/2) at 20 k Hz. The telemetry rate is ~0.85 Mbps in the survey mode and ~3.0 Mbps in the detailed survey mode. The phase difference between three axes can be made generally with a precision of less than 1.0°. The dynamic range of the SCM instrument is over 100 d B. The orthogonality of three mechanical axes of search coil senor is better than 0.13°. The performance of SCM can satisfy the requirement of scientific objectives of CSES mission. | CAO JinBin ZENG Li ZHAN Feng WANG ZuoGui WANG Yan CHEN Yu MENG QingChun JI ZhanQiang WANG PengFei LIU ZhongWei MA LingYu | 2018 | Science China(Technological Sciences)2018，61，5： | 13 |
| 2 | Chain-type wireless sensor network node scheduling strategy显示文摘In order to reduce power consumption of sensor nodes and extend network survival time in the wireless sensor network(WSN), sensor nodes are scheduled in an active or dormant mode. A chain-type WSN is fundamentally different from other types of WSNs, in which the sensor nodes are deployed along elongated geographic areas and form a chain-type network topology structure. This paper investigates the node scheduling problem in the chain-type WSN. Firstly, a node dormant scheduling mode is analyzed theoretically from geographic coverage, and then three neighboring nodes scheduling criteria are proposed. Secondly, a hybrid coverage scheduling algorithm and dead areas are presented. Finally, node scheduling in mine tunnel WSN with uniform deployment(UD), non-uniform deployment(NUD) and optimal distribution point spacing(ODS) is simulated. The results show that the node scheduling with UD and NUD, especially NUD,can effectively extend the network survival time. Therefore, a strategy of adding a few mobile nodes which activate the network in dead areas is proposed, which can further extend the network survival time by balancing the energy consumption of nodes. | Guangzhu Chen Qingchun Meng Lei Zhang | 2014 | Journal of Systems Engineering and Electronics2014，25，2： | 9 |
| 3 | A NEW DAMAGE MECHANICS BASED APPROACH TO FATIGUE LIFE PREDICTION AND ITS ENGINEERING APPLICATION显示文摘An approach based on continuum damage mechanics to fatigue life prediction for structures is proposed. A new fatigue damage evolution equation is developed, in which the parameters are obtained in a simple way with reference to the experimental results of fatigue tests on standard specimens. With the utilization of APDL language on the ANSYS platform, a finite element implementation is presented to perform coupling operation on damage evolution of material and stress redistribution. The fatigue lives of some notched specimens and a Pitch-change-link are predicted by using the above approach. The calculated results are validated with experimental data. | Fei Shen Weiping Hu Qingchun Meng Miao Zhang | 2015 | Acta Mechanica Solida Sinica2015，28，5： | 4 |
| 4 | A DAMAGE MECHANICS MODEL FOR FATIGUE LIFE PREDICTION OF FIBER REINFORCED POLYMER COMPOSITE LAMINA显示文摘A damage mechanics fatigue life prediction model for the fiber reinforced polymer lamina is established. The stiffness matrix of the lamina is derived by elastic constants of fiber and matrix. Two independent damage degrees of fiber and matrix are introduced to establish constitutive relations with damage. The damage driving forces and damage evolution equations for fiber and matrix are derived respectively. Fatigue tests on 0°and 90°unidirectional laminates are conducted respectively to identify parameters in damage evolution equations of fiber and matrix. The failure criterion of the lamina is presented. Finally, the life prediction model for lamina is proposed. | Wenjing Shi Weiping Hu Miao Zhang Qingchun Meng | 2011 | Acta Mechanica Solida Sinica2011，24，5： | 4 |
| 5 | Revised damage evolution equation for high cycle fatigue life prediction of aluminum alloy LC4 under uniaxial loading显示文摘The fatigue life prediction for components is a difficult task since many factors can affect the final fatigue life. Based on the damage evolution equation of Lemaitre and Desmorat, a revised two-scale damage evolution equation for high cycle fatigue is presented according to the experimental data, in which factors such as the stress amplitude and mean stress are taken into account. Then, a method is proposed to obtain the material parameters of the revised equation from the present fatigue experimental data.Finally, with the utilization of the ANSYS parametric design language(APDL) on the ANSYS platform, the coupling effect between the fatigue damage of materials and the stress distribution in structures is taken into account, and the fatigue life of specimens is predicted. The outcome shows that the numerical prediction is in accord with the experimental results, indicating that the revised two-scale damage evolution model can be well applied for the high cycle fatigue life prediction under uniaxial loading. | Zhixin ZHAN Weiping HU Miao ZHANG Qingchun MENG | 2015 | Applied Mathematics and Mechanics(English Edition)2015，36，9： | 3 |
| 6 | Tension-Torsion High-Cycle Fatigue Life Prediction of 2A12-T4 Aluminium Alloy by Considering the Anisotropic Damage:Model, Parameter Identification, and Numerical Implementation显示文摘To consider the anisotropic damage in fatigue, an improved boom-panel model is presented to simulate a representative volume element(RVE) in the framework of continuum damage mechanics. The anisotropic damage state of the RVE is described by the continuity extents of booms and panels, whose damage evolutions are assumed to be isotropic. The numerical implementation is proposed on the basis of damage mechanics and the finite element method. Finally,the approach is applied to the fatigue life prediction of 2A12-T4 aluminium alloy specimen under cyclic loading of tension-torsion. The results indicate a good agreement with the experimental data. | Linlin Sun Miao Zhang Weiping Hu Qingchun Meng | 2016 | Acta Mechanica Solida Sinica2016，29，4： | 2 |
| 7 | New approach based on continuum damage mechanics with simple parameter identification to fretting fatigue life prediction显示文摘A new continuum damage mechanics model for fretting fatigue life prediction is established. In this model, the damage evolution rate is described by two kinds of quantities. One is associated with the cyclic stress characteristics obtained by the finite element(FE) analysis, and the other is associated with the material fatigue property identified from the fatigue test data of standard specimens. The wear is modeled by the energy wear law to simulate the contact geometry evolution. A two-dimensional(2D)plane strain FE implementation of the damage mechanics model and the energy wear model is presented in the platform of ABAQUS to simulate the evolutions of the fatigue damage and the wear scar. The effect of the specimen thickness is also investigated.The predicted results of the crack initiation site and the fretting fatigue life agree well with available experimental data. Comparisons are made with the critical plane SmithWatson-Topper(SWT) method. | Fei SHEN Weiping HU Qingchun MENG | 2015 | Applied Mathematics and Mechanics(English Edition)2015，36，12： | 2 |
| 8 | Design, Synthesis and Biological Activities of N-(Furan-2-ylmethyl)-lH-indole-3-carboxamide Derivatives as Epidemal Growth Factor Receptor Inhibitors and Anticancer Agents显示文摘 | ZHANG Lan DENG Xinshan WU Jiaofeng MENG Guangpeng LIU Congchong CHEN Guzhou ZHAO Qingchun HU Chun | 2017 | Chemical Research in Chinese Universities2017，33，3： | 1 |
| 9 | Experimental method for and theoretical research on defect tolerance of fxed plate based on damage mechanics显示文摘An experimental method and a theoretical analysis based on continuum damage mechanics are applied for the defects tolerance of fxed plate.The defects type studied in this article is scratch,which is considered a typical defect on fxed plate according to the engineering practice.The general approach to the defects tolerance analysis of scratched fxed plate is presented.The method of fatigue life prediction for standard notched specimens has been established on the basis of continuum damage mechanics.For the purpose of obtaining the influence law of fatigue life in consequence of scratches,fatigue experiments of standard notched specimens and scratched specimens have been done.Evaluation of the fatigue life of scratched fxed plate has been carried out.And the value of scratch defects permissible to the condition of safety service life has been worked out.According to the results of theoretical calculations,the fatigue experiment of scratched fxed plate has been performed.The outcome shows that the theoretical prediction tallies with the experimental results. | Zhan Zhixin Hu Weiping Zhang Miao Zhu Yuefa Meng Qingchun | 2013 | Chinese Journal of Aeronautics2013，26，5： | 1 |
| 10 | Ignition Characteristics of a Liquid-Kerosene-Fueled Scramjet during Air Throttling Combined with a Gas Generator显示文摘 | Wen Bao Jichao Hu Youhai Zong Qingchun Yang Juntao Chang Meng Wu Daren Yu | 2013 | Journal of Aerospace Engineering2013，，： | 1 |
| 11 | Dynamic balance of a biped robot using fuzzy reinforcement learning agents显示文摘 | Changjiu Zhoua Qingchun Meng | 2003 | Fuzzy Sets and Systems2003，134，： | 1 |
| 12 | Local Fuzzy Fractal Dimension and its Application in Medical Image Processing显示文摘 | Zhuang Xiaodong Meng Qingchun | 2004 | Artificial Intelligence in Medicine2004，32，1： | 1 |
| 13 | Design of a novel mitochondria targetable turn-on fluorescence probe for hydrogen peroxide and its two-photon bioimaging applications显示文摘Considering that hydrogen peroxide(H2O2)plays significant roles in oxidative stress,the cellular signal transduction and essential biological process regulation,the detection and imaging of H2O2 in living systems undertakes critical responsibility.Herein,we have developed a novel two-photon fluorescence turn on probe,named as Pyp-B for mitochondria H2O2 detection in living systems.Selectivity studies show that probe Pyp-B exhibit highly sensitive response toward H2O2 than other reactive oxygen species(ROS)and reactive nitrogen species(RNS)as well as biologically relevant species.The fluorescence colocalization studies demonstrate that the probe can localize in the mitochondria solely.Furthermore,as a bio-compatibility molecule,the highly selective and sensitive of fluorescence probe Pyp-B have been confirmed by its cell imaging application of H2O2 in living A549 cells and zebrafishes under the physiological conditions. | Kangnan Wang Wen Ma Yuchun Xu Xin Liu Gui Chen Meng Yu Qiling Pan Chaobo Huang Xiaochuan Li Qingchun Mu Yongbing Sun Zhiqiang Yu | 2020 | Chinese Chemical Letters2020，31，12： | 1 |
| 14 | Energy approach to a linearization contact problem of simply supported cross-ply laminated composite plate显示文摘 | Hu Weiping Zhang Xing Meng Qingchun | 2002 | International Journal of Solids and Structures2002，39，： | 1 |
| 15 | Local fuzzy fractal dimension and its application in medical image processing 显示文摘 | Xiaodong Zhang Qingchun Meng | 2004 | Artificial Intelligence in Medicine2004，32，： | 1 |
| 16 | Dynamic balance of a biped robot using fuzzy reinforcement learning agents显示文摘 | ZHOU Changjiu MENG Qingchun | 2003 | Fuzzy Sets and Systems2003，134，1： | 1 |
| 17 | On the‘ENGO+focal firm’governance strategies of pollution of small and medium suppliers显示文摘Presently,the environmental pollution problem,especially that of the small and medium-sized enterprises,has become a bottleneck restricting the high-quality development of China’s economy.It is imperative to accelerate the construction of a collaborative governance system with multiple subject participation.The behavior modes of Environmental Non-governmental Organizations(ENGOs),a key player in environmental care,in collaborating with core enterprises to control pollution from small and medium-sized suppliers should be explored.Therefore,we constructed a collaborative governance system consisting of ENGOs,focal firms and small and medium-sized suppliers.Then a two-stage game model was established to analyze the strategies of the governance system.Specifically,we studied the collaborative green cooperation strategy and antagonistic pressure supervision strategy between ENGOs and focal firms,analyzed factors influencing the strategic choices of each subject,and gave the advantages of the cooperation strategies through further comparisons.The results showed that:Under the cooperation strategy,ENGOs provided knowledge of environmental protection to the focal firms,then both the audit efforts of focal firms and the environmental protection efforts of small and medium-sized suppliers were effectively improved.Since ENGOs could not fully obtain the pollution information of small and medium-sized suppliers or accurately trace it from their downstream focal firms,it was difficult to drive the supply chain’s endogenous governance by this external monitoring of ENGOs,making the effect of pressure supervision strategy limited.The effectiveness of green cooperation strategy was positively correlated with the knowledge absorption capacity of focal firms,the unit product revenue,and the focal firms'violation penalties for small and medium-sized suppliers.When ENGOs'violation penalties for small and medium-sized suppliers were higher,or the reputation loss of focal firms was higher,more unfavorable conditions of green cooperation strategy could be achieved.Accordingly,ENGOs should choose to cooperate with focal firms with strong knowledge absorption ability and high profit per product;focal firms should learn environmental protection knowledge to improve the screening standards and review capabilities,and promote the achievement of green cooperation strategy conditions by strengthening active information disclosure;the government should promote the collaboration between ENGOs and focal firms by issuing environmental guidelines. | Yumei Jiang Qingchun Meng Ying Guo Ziran Wang | 2021 | Chinese Journal of Population,Resources and Environment2021，19，3： | 0 |
| 18 | ANALYTICAL-GENERALIZED VARIATIONAL METHOD ABOUT SOLUTION OF SIF AND CONSERVATIVE INTEGRAL FOR DELAMINATlONS OF LAMINATE BEAM显示文摘ANALYTICAL-GENERALIZEDVARIATIONALMETHODABOUTSOLUTIONOFSIFANDCONSERVATIVEINTEGRALFORDELAMINATlONSOFLAMINATEBEAMANALYTICAL-GENE... | Zhang Xing Meng Qingchun(Faculty 508,Beijing University of Aeronautics and Astronautics, Beijing,China,100083) | 1994 | Chinese Journal of Aeronautics1994，7，1： | 0 |
| 19 | COMPLEX VARIABLE-VARIATIONALMETHOD OF SOLUTION FOR BI-METALLAMINATES WITH INTERFACE CRACKSAND ITS APPLICATION IN GLUED JOINTS显示文摘In this paper, the eigen function expansions of displacements and stresses of bi-metal laminates with interface cracks are obtained. Furthermore, the stress intensity factors are determined by the variational method to satisfy the boundary conditions and there are only line integrals in the variational equations due to the previous satisfaction of all basic equations. The computations show that this method of solution has the advantages of rapid convergency and time-saving. The results obtained by this method for homogeneous material agree with the known ones very well. | Meng Qingchun and Zhang XingBeijing University of Aeronautics and Astronautics | 1990 | Chinese Journal of Aeronautics1990，5，3： | 0 |
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