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Wireless actuation and control of ionic polymer-metal composite actuator using a microwave link

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International journal of smart and Nano Materials 2012年第4期3卷 244-262页

作者： j.s.lee W.Yim C.Bae K.j.Kim Department of Mechanical Engineering University of NevadaLas VegasUSA Department of Chemistry University of NevadaLas VegasUSA Department of Mechanical Engineering University of NevadaRenoUSA

The ionic polymer–metal composite(IPMC),a type of electroactive polymer(EAP)actuator,has created a unique opportunity to design robots that mimic the motion of biological systems due to its soft structure and operation at a low *** this polymer actuator has strong potential for a next-generation artificial muscle actuator,it has been observed by many researchers that supplying actuation voltages in multiple locations is *** robotic applications,a tethered operation is prohibited and the battery weight can be critical for actual *** this research,the remote unit can provide necessary power and control signals to the target mobile robot units actuated by *** research addresses a novel approach of using a wireless power link between the IPMC and a remote unit using microstrip patch antennas designed on the electrode surface of the IPMC for transmitting the *** modulation of the microwave is proposed to selectively actuate a particular portion of the IPMC where the matching patch antenna pattern is *** approach can be especially useful for long-term operation of small-scale locomotion units and avoids problems caused by complex internal wiring often observed in various types of biologically inspired robots.

关键词： ionic polymer-metal composite actuator microwave link wireless actuation robotic application biomimetic robot

Foraminifera from the Donetz Basin and Their stratigraphical significance

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地质学报 1937年第S1期 57-99+101-103+105-107+500-501页

作者： j.s.lee Research Institute of Geology Academia sinica

The material dealt with in the present paper was collected by thelate Dr. V. K. Ting in 1933 with the specific object of determining theboundaries of the Carboniferous and Permian developments in Russiaand their strat... 详细信息

关键词： Foraminifera from the Donetz Basin and Their stratigraphical significance

THE CANON OF MARINE TRANsGREssION IN POsT-PALAEOZOIC TIMEs.

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地质学报 1928年第1期 85-132页

作者： j.s.lee

Ⅰ. Introduction In attempting to attack the fundamental problem ot geotectonics, the writer has endeavoured to show, along very broad lines, that the more important marine transgressions in the Northern Hemisphere du... 详细信息

关键词： THE CANON OF MARINE TRANsGREssION IN POsT-PALAEOZOIC TIMEs

The strain Ellipsoid and shear Planes in Rocks

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地质学报 1948年第Z1期 14-25页

作者： j.s.lee Institute of Geology Academia sinica

In discussing the origin and trend of certain types of fault,joint,cleavageand other fractures,and in petrofabric analysis it has been a common practicesince the time of ***[1],to refer to the so-called *** it is ques... 详细信息

关键词： The strain Ellipsoid and shear Planes in Rocks

Vestiges of Corrie-Glaciation on the Kweichow Plateau

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地质学报 1947年 35-54页

作者： j.s.lee Geological Institute Academia sinica

The present paper is the outcome of an attempt to answer the problem of glaciation of the Kweichow Plateau raised some six years ago (1). In a region where essentially similar physiographical conditions now prevail, and presumably have prevailed at any given epoch in recent geological times, we are tempted to use a sampling method in dealing with the problem of climatic change so far-

关键词： Vestiges of Corrie-Glaciation on the Kweichow Plateau

GEOLOGY OF THE GORGE DIsTRICT OF THE YANGTZE (FROM ICHANG TO TZEKUEI) WITH sPECIAL REFERENCE TO THE DEVELOPMENT OF THE GORGEs.

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地质学报 1924年第Z1期 351-391+411-414页

作者： j.s.lee

As the Gorge District of the Yangtze is one of the few areas in China that can deservedly boast before the world its scenic grandeur as well as beauty, it has been long felt that a systematic account of its geological conditions would open another aspect of interest to the scientific travellers. There are already on the record the observations of Pumpelly, Richthofen, Abendanon, Willis and Blackwelder, Noda and others; but the results of their work, important as they are in certain respects, seem to indicate, as a whole, little more than the broad fact that here we have a mighty sequence of rocks folded into a series of anticlines with a rather extensive exposure of a "granitic" core in the easternmost fold—the so-called Hwanglin Anticline. This anticline extends transversly from the town of Ichang to that of Tzekuei, and covers a little less than half of the distance between the first and the last points of the gorges.

关键词： WITH sPECIAL REFERENCE TO THE DEVELOPMENT OF THE GORGEs FROM ICHANG TO TZEKUEI GEOLOGY OF THE GORGE DIsTRICT OF THE YANGTZE

THE NATURE AND EXTENT OF A sTRATIGRAPHICAL BREAK IN THE CAMBRO-ORDOVICIAN LIMEsTONEs OF NORTHERN ANHUI,AND ITs BEARING UPON THE sYsTEMATIC CLAssIFICATjON OF THE CAMBRO-ORDOVICIAN sTRATA

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地质学报 1922年第Z1期 89-96页

作者： j.s.lee

Those who have followed the historical development of the systematicclassification of the old Palaeozoic rocks in Europe would undoubtedly wellremember how the Ordovician became recognized as a well-defined,independ-

关键词： ab THE NATURE AND EXTENT OF A sTRATIGRAPHICAL BREAK IN THE CAMBRO-ORDOVICIAN LIMEsTONEs OF NORTHERN ANHUI,AND ITs BEARING UPON THE sYsTEMATIC CLAssIFICATjON OF THE CAMBRO-ORDOVICIAN sTRATA 戏班加加

Generalized polynomial chaos expansion by reanalysis using static condensation based on substructuring

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Applied Mathematics and Mechanics(English Edition) 2024年第5期45卷 819-836页

作者： D.lee s.CHANG j.lee Department of Automotive Engineering Hanyang UniversitySeoul 04763Republic of Korea school of Mechanical Engineering Chungnam National UniversityDaejeon 34134Republic of Korea Department of Mechanical Robotics and Energy EngineeringDongguk UniversitySeoul 04620Republic of Korea

This paper presents a new computational method for forward uncertainty quantification(UQ)analyses on large-scale structural systems in the presence of arbitrary and dependent random *** method consists of a generalized polynomial chaos expansion(GPCE)for statistical moment and reliability analyses associated with the stochastic output and a static reanalysis method to generate the input-output data *** the reanalysis,we employ substructuring for a structure to isolate its local regions that vary due to random *** allows for avoiding repeated computations of invariant substructures while generating the input-output data *** substructuring with static condensation further improves the computational efficiency of the reanalysis without losing ***,the GPCE with the static reanalysis method can achieve significant computational saving,thus mitigating the curse of dimensionality to some degree for UQ under high-dimensional *** numerical results obtained from a simple structure indicate that the proposed method for UQ produces accurate solutions more efficiently than the GPCE using full finite element analyses(FEAs).We also demonstrate the efficiency and scalability of the proposed method by executing UQ for a large-scale wing-box structure under ten-dimensional(all-dependent)random inputs.

关键词： forward uncertainty quantification(UQ) generalized polynomial chaos expansion(GPCE) static reanalysis method static condensation substructuring

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Mathematical modeling and simulations of stress mitigation by coating polycrystalline particles in lithium-ion batteries

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Applied Mathematics and Mechanics(English Edition) 2024年第6期45卷 947-962页

作者： N.IQBAL j.CHOI s.F.sHAH C.lee s.lee Department of Mechanical Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

A chemo-mechanical model is developed to investigate the effects on the stress development of the coating of polycrystalline Ni-rich LiNixMnyCo_(z)O_(2)(x≥0.8)(NMC)particles with poly(3,4-ethylenedioxythiophene)(PEDOT).The simulation results show that the coating of primary NMC particles significantly reduces the stress generation by efficiently accommodating the volume change associated with the lithium diffusion,and the coating layer plays roles both as a cushion against the volume change and a channel for the lithium transport,promoting the lithium distribution across the secondary particles more ***,the lower stiffness,higher ionic conductivity,and larger thickness of the coating layer improve the stress *** paper provides a mathematical framework for calculating the chemo-mechanical responses of anisotropic electrode materials and fundamental insights into how the coating of NMC active particles mitigates stress levels.

关键词： lithium-ion battery(LIB) polycrystalline particle coating finite element simulation Ni-rich LiNixMnyCo_(z)O_(2)(x>0.8)(NMC)

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