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Shape control of multi-cellular inflatable panels
N. KATAYAMA, K. ISHIMURA, K. MINESUGI, DANIEL J. INMAN
《机械工程前沿(英文)》 2013年 第8卷 第3期 页码 276-282 doi: 10.1007/s11465-013-0267-5
Multi-cellular inflatable structures are ultra-light and robust against membrane damage such as pinholes caused by space debris. Due to their robustness, inflatable structures supported by inner gases can be applied as space structures. In the present study, shape control for a simple multi-cellular inflatable panel was achieved via a novel diaphragm mechanism. When the bending actuator in a center membrane bends, the inner pressures of sub-cells become different, and the diaphragm mechanism bends as a whole. Because a sliding component is not included, this deformable system is a reliable mechanism. In addition, the proposed mechanism has higher rigidity than that of a bending actuator used alone. In the present paper, we investigate the feasibility of a novel diaphragm mechanism and its characteristics using experimental and numerical results.
关键词: Membrane structures inflatable structure shape control smart structures structural mechanics space engineering
Applications of atomic force microscopy in immunology
Jiping Li, Yuying Liu, Yidong Yuan, Bo Huang
《医学前沿(英文)》 2021年 第15卷 第1期 页码 43-52 doi: 10.1007/s11684-020-0769-6
关键词: cellular mechanics atomic force microscopy neutrophil extracellular trap macrophage phagocytosis pore formation
Regulation of T cell immunity by cellular metabolism
null
《医学前沿(英文)》 2018年 第12卷 第4期 页码 463-472 doi: 10.1007/s11684-018-0668-2
T cells are an important adaptive immune response arm that mediates cell-mediated immunity. T cell metabolism plays a central role in T cell activation, proliferation, differentiation, and effector function. Specific metabolic programs are tightly controlled to mediate T cell immune responses, and alterations in T cell metabolism may result in many immunological disorders. In this review, we will summarize the main T cell metabolic pathways and the important factors participating in T cell metabolic programming during T cell homeostasis, differentiation, and function.
关键词: T cell immunity metabolic pathways nutrient uptake metabolic checkpoints
Progressive failure analysis of notched composite plate by utilizing macro mechanics approach
《结构与土木工程前沿(英文)》 2021年 第15卷 第3期 页码 623-642 doi: 10.1007/s11709-021-0726-8
关键词: progressive failure notched composite plate Hashin failure criterion macro mechanics approach finite element method
Parametric sensitivity analysis of cellular diaphragm wall
Xi CHEN, Wei XU
《结构与土木工程前沿(英文)》 2012年 第6卷 第4期 页码 358-364 doi: 10.1007/s11709-012-0177-3
关键词: cellular diaphragm wall sensitivity analysis optimization centrifuge model test
Liver cell therapies: cellular sources and grafting strategies
《医学前沿(英文)》 2023年 第17卷 第3期 页码 432-457 doi: 10.1007/s11684-023-1002-1
关键词: liver regeneration hepatocytes cholangiocytes stem cells organoids regulatory mechanisms transplantation/grafting strategies
Optimization of Land-use Based on the Theory of Cellular Automata and Value of Ecosystem Services
Lian-fu Jiang,Guo-xian Xu,Hao Jiang
《工程管理前沿(英文)》 2014年 第1卷 第4期 页码 395-401 doi: 10.15302/J-FEM-2014058
关键词: Ecosystem service function optimization of land use Cellular Automata (CA)
Creep life assessment of aero-engine recuperator based on continuum damage mechanics approach
《机械工程前沿(英文)》 2022年 第17卷 第4期 doi: 10.1007/s11465-022-0702-6
关键词: creep life assessment brazed joint continuum damage mechanics aeroengine recuperator
Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures
Jingcai ZHANG; Yong DING; Xinchun GUAN
《结构与土木工程前沿(英文)》 2022年 第16卷 第6期 页码 718-728 doi: 10.1007/s11709-022-0815-3
关键词: friction pendulum bearing progressive collapse horizontal stiffness compressive arching action catenary action
Advances in structural mechanics of Chinese ancient architectures
YU Maohong, ODA Yoshiya, FANG Dongping, ZHAO Junhai
《结构与土木工程前沿(英文)》 2008年 第2卷 第1期 页码 1-25 doi: 10.1007/s11709-008-0002-1
《结构与土木工程前沿(英文)》 2021年 第15卷 第3期 页码 781-792 doi: 10.1007/s11709-021-0733-9
关键词: lightweight cellular concrete construction-induced damage freeze-thaw action microstructure degradation mechanism
郑颖人,孔亮
《中国工程科学》 2005年 第7卷 第11期 页码 21-36
分析了经典塑性力学用于岩土类材料的问题,它采用了3个不符合岩土材料变形机制的假设。从固体力学原理直接导出广义塑性位势理论,将经典塑性力学改造为更一般的塑性力学——广义塑性力学。广义塑性力学采用了塑性力学中的分量理论,能反映应力路径转折的影响,并避免了采用正交流动法则所引起的过大剪胀等不合理现象,也不会产生当前非关联流动法则中任意假定塑性势面引起的误差。给出了广义塑性力学的屈服面理论、硬化定律和应力-应变关系,并建立了考虑应力主轴旋转的广义塑性位势理论。屈服条件是状态参数,也是试验参数,只能由试验给出。应用表明,广义塑性力学可作为岩土材料的建模理论,还可应用于诸如极限分析等土力学的诸多领域,具有广阔的应用前景。
《化学科学与工程前沿(英文)》 2022年 第16卷 第2期 页码 152-167 doi: 10.1007/s11705-021-2060-z
关键词: molecular property quantum mechanics quantitative structure-property relationship heat of reaction solid-liquid phase equilibrium
Macro-architectured cellular materials: Properties, characteristic modes, and prediction methods
Zheng-Dong MA
《机械工程前沿(英文)》 2018年 第13卷 第3期 页码 442-459 doi: 10.1007/s11465-018-0488-8
Macro-architectured cellular (MAC) material is defined as a class of engineered materials having configurable cells of relatively large (i.e., visible) size that can be architecturally designed to achieve various desired material properties. Two types of novel MAC materials, negative Poisson’s ratio material and biomimetic tendon reinforced material, were introduced in this study. To estimate the effective material properties for structural analyses and to optimally design such materials, a set of suitable homogenization methods was developed that provided an effective means for the multiscale modeling of MAC materials. First, a strain-based homogenization method was developed using an approach that separated the strain field into a homogenized strain field and a strain variation field in the local cellular domain superposed on the homogenized strain field. The principle of virtual displacements for the relationship between the strain variation field and the homogenized strain field was then used to condense the strain variation field onto the homogenized strain field. The new method was then extended to a stress-based homogenization process based on the principle of virtual forces and further applied to address the discrete systems represented by the beam or frame structures of the aforementioned MAC materials. The characteristic modes and the stress recovery process used to predict the stress distribution inside the cellular domain and thus determine the material strengths and failures at the local level are also discussed.
关键词: architectured material cellular materials multi-scale modeling homogenization method effective material properties computational method
标题 作者 时间 类型 操作
Shape control of multi-cellular inflatable panels
N. KATAYAMA, K. ISHIMURA, K. MINESUGI, DANIEL J. INMAN
期刊论文
Applications of atomic force microscopy in immunology
Jiping Li, Yuying Liu, Yidong Yuan, Bo Huang
期刊论文
Optimization of Land-use Based on the Theory of Cellular Automata and Value of Ecosystem Services
Lian-fu Jiang,Guo-xian Xu,Hao Jiang
期刊论文
Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures
Jingcai ZHANG; Yong DING; Xinchun GUAN
期刊论文
Advances in structural mechanics of Chinese ancient architectures
YU Maohong, ODA Yoshiya, FANG Dongping, ZHAO Junhai
期刊论文
Influence of construction-induced damage on the degradation of freeze–thawed lightweight cellular concrete
期刊论文
A computational toolbox for molecular property prediction based on quantum mechanics and quantitative
期刊论文