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2008 Stability Analysis of the Immersed Boundary Method for a Two-Dimensional Membrane with bending rigidity

Communications in Computational Physics 2008年第3期3卷 704-723页

作者： Zhaoxin Gong Huaxiong Huang Chuanjing Lu Department of Mechanics Shanghai Jiaotong UniversityShanghai 200240China Department of Mathematics and Statistics York UniversityTorontoOntario M3J 1P3Canada.

In this paper,we analyze the stability of the Immersed Boundary Methodapplied to a membrane-fluid system with a plasma membrane immersed in an incompressibleviscous *** show that for small deformations,the planar rest state isstable for a membrane with bending *** smoothed version,using a standardregularization technique for the singular force,is also shown to be ***,we show that the coupled fluid-membrane system is stiff and smoothing helpsto reduce the *** to the system of elastic fibers immersed in an incompressiblefluid,membrane with bending rigidity consist of a wider range of *** numerical instability could occur more easily for an explicit methodwhen the time step size is not sufficiently small,even though the continuous problemis stable.

关键词： bending rigidity immersed boundary method membrane moving interface stability.

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Morphology,bending Property and Secondary Structure Estimation of Dog Hair

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Journal of Donghua University(English Edition) 2016年第1期33卷 66-71页

作者：王小丽张莉莎刘洪玲杜赵群于伟东 Textile Materials and Technology Laboratory Donghua University

The morphology, bending property and secondary structure estimation of dog hair were investigated by scanning electron microscope( SEM),fiber compression bending analyzer,fiber frictional coefficient tester and Fourier transform infrared spectroscopy( FTIR). The SEM micrograph of hair indicated guard hair( GH),intermediate hair( IH) and underhair( UH) from dog hair fibers displayed considerable differences in the diameter,length,scale shape and medulla. In addition,the bending property of fibers were related to the diameter of fibers and the percentage and structure of medulla. The UH had the greatest frictional coefficient,while the guard hair had the largest bending rigidity in three kinds of hairs. The analysis of amide I region implied that there was an apparent variety in the secondary structure of hairs,mainly the percentage of α-helix and β-pleated sheet and β-turn structure. The X-ray diffraction results showed that the crystallinity of the UH was the lowest in the three kinds of fibers. The tensile behaviors of dog hair also indicated that the increase of β-pleated and β-turn structure caused the increase of the breaking strength.

关键词： dog hair secondary structure morphology bending rigidity frictional property

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Stress-assisted design of stiffened graphene electrode structure toward compact energy storage

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Journal of Energy Chemistry 2022年第8期31卷 478-487,I0013页

作者： Yuzuo Wang Jing Chen Huasong Qin Ke Chen Zhuangnan Li Yan Chen Juan Li Tianzhao Hu Shaorui Chen Zhijun Qiao Dianbo Ruan Quanhong Yang Yilun Liu Feng Li Ningbo University Institute of Advanced Energy Storage Technology and EquipmentNingbo 315211ZhejiangChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina State Key Laboratory of Chemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Ningbo CRRC New Energy Technology Co. LtdNingbo 315112ZhejiangChina Laboratory for Multiscale Mechanics and Medical Science School of AerospaceXi’an Jiaotong UniversityXi’an 710049ShaanxiChina Department of Materials Science and Metallurgy University of CambridgeCB30FSUnited Kingdom Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchun 130012JilinChina School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina

The low spatial charge-storage density of porous carbons greatly limits volumetric performance in electrochemical *** increase of charge-storage density requires structural refinements to balance the trade-offs between the porosity and density of materials,but the limited mechanical properties of carbons usually fail to withstand effective densifying processes and obtain an ideal pore ***,we design the stiffened graphene of superior bending rigidity,enabling the fine adjustments of pore structure to maximize the volumetric capacitance for the graphene-based *** inplane crumples on graphene sheets are found to contribute largely to the bending rigidity,which is useful to control the structural evolution and maintain sufficient ion-accessible surface area during the assembling *** makes the capacitance of stiffening activated graphene keep 98%when the electrode density increases by 769%to reach 1.13 g cm^(-3) after mechanical pressure,an excellent volumetric energy density of 98.7 Wh L^(-1) in an ionic-liquid electrolyte is *** results demonstrate the role of intrinsic material properties on the performance of carbon-based electrodes for capacitive energy storage.

关键词： Supercapacitor Activated graphene bending rigidity Volumetric capacitance Pore structure

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Stability Analysis for the Immersed Boundary Method

Stability Analysis for the Immersed Boundary Method

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The Fifth International Conference on Fluid Mechanics

作者： Z.X.Gong~(1*) H.X.Huang~(1 2) C.J.Lu~1 1 Department of Engineering Mechanics Shanghai Jiaotong University Shanghai 200240 China 2 Department of Mathematics and Statistics York University Toronto Ontario M3J 1P3 Canada

＜正＞In this paper,we analyse the stablity of the Immersed Boundary Method applied to a membrane-fluid system with a plasma membrane immersed in an incompressible viscous *** small deformations,the immersed boundary ... 详细信息

关键词： bending rigidity immersed boundary methodmembrane dispersion relation stability

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