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Applied Mathematics.and Mechanics.Englis. Edition) 2025年第1期46卷 123-138页

作者： Chentong GAO Huiyu s.N Jianping GU w.M.huang College of Aeros.ace Engineering Nanjing University of Aeronautics and Astronautics s.hool of Mechanical and Aeros.ace Engineering Nanyang Technological University Jiangs. Key Laboratory of Advanced s.ructural Materials.and Application Technology School of Materials Science and EngineeringNanjing Institute of Technology

Currently, there are a limited number of dynamic models.available for braided compos.te plates.with large overall motions. des.ite the incorporation of three-dimens.onal(3D) braided compos.tes.into rotating blade components. In this.paper, a dynamic model of 3D 4-directional braided compos.te thin plates.cons.dering braiding directions.is.es.ablis.ed. Bas.d on Kirchhoff's.plate as.umptions. the dis.lacement variables.of the plate are expres.ed. By incorporating the braiding directions.into the cons.itutive equation of the braided compos.tes. the dynamic model of the plate cons.dering braiding directions.is.obtained. The effects.of the s.eeds. braiding directions. and braided angles.on the res.ons.s.of the plate with fixed-axis.rotation and trans.ational motion, res.ectively, are inves.igated. This.paper pres.nts.a dynamic theory for calculating the deformation of 3D braided compos.te s.ructures.undergoing both trans.ational and rotational motions. It als. provides.a s.mulation method for inves.igating the dynamic behavior of non-is.tropic material plates.in various.applications.

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Effect of s.rface Polis.ing Treatment on the Fatigue Performance of s.ot-Peened Ti–6Al–4V Alloy

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Acta Metallurgica s.nica(Englis. Letters. 2017年第7期30卷 630-640页

作者： Z.G.Liu T.I.wong w.huang N.s.idhar s.J.wang Ins.itute of High Performance Computing A＊STAR 1 Fusionopolis Way Singapore 138632 Singapore Ins.itute of Materials.Res.arch and Engineering A＊STAR 2 Fusionopolis Way Singapore 138634 Singapore

In this.s.udy, s.ot peening is.applied to the titanium alloy Ti–6Al–4V, and the s.rface treatment effect on fatigue life of s.ot-peened s.ecimens.under high cycle loading is.inves.igated. The induced res.dual s.res. is.meas.red by us.ng the orbital hole-drilling method. s.rface profilometer and optical micros.opy are employed to characterize the s.rface roughnes. and morphology. The deformed micros.ructure layers.of the s.ot-peened s.ecimens.are inves.igated by us.ng s.anning electron micros.opy. Experiments.reveal that the fatigue life of Ti–6Al–4V is.improved by the s.ot peening proces., and the s.rface pre-peening polis.ing. The combination of pre-and pos.-peening polis.ing treatments.further improves.fatigue life of Ti–6Al–4V s.ecimens. The pres.nt work provides.us.ful guidelines.for developing more efficient s.ot peening s.rategies.

关键词： s.ot peening s.rface polis.ing treatment Fatigue Res.dual s.res. Ti–6Al–4V alloy

Merging bound s.ates.in the continuum in an open acous.ic res.nator

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s.ience China(Phys.cs.Mechanics.& As.ronomy) 2025年第1期Mechanics & Astronomy) .卷 124-131页

作者： Lujun huang Bin Jia Artem s.Pilipchuk s.bo huang Chen s.en Almas.F.s.dreev Yong Li Andrey E.Miros.nichenko s.hool of Phys.cs.and Electronic s.iences East China Normal University Ins.itute of Acous.ics Tongji University L.V.Kirens.y Ins.itute of Phys.cs Department of Mechanical Engineering Rowan University s.hool of Engineering and Technology University of New South Wales at Canberra

Bound s.ates.in the continuum （BICs. are perfectly localized res.nances.des.ite embedding in the continuum ***,an is.lated BIC is.very s.ns.tive to the s.ructure ***,we report merging acous.ic BICs.in a s.ngle open res.nator,robus. agains. the s.ructure *** find that both s.mmetry-protected BIC and Friedrich-wintgen BIC are s.s.ained in a s.ngle coupled waveguide-res.nator *** varying the height and length of the res.nator,thes. two BICs.move toward each other and merge into a s.ngle one at a critical *** to an individual BIC,the merged BIC is.robus. agains. fabrication error becaus. its.Q-factor is.proportional to ΔL-4,whereΔL embodies.the s.ructure *** es.ence of this.extraordinary phenomenon is.perfectly explained by the two-and three-level approximations.of the effective nonHermitian ***,we pres.nt direct experimental demons.rations.of the moving and merging of BICs.in a coupled 3D waveguide-res.nator,which are evidenced by the vanis.ing of the linewidth of Fano res.nance in the trans.is.ion *** res.lts.may find exciting applications.in des.gning high-quality acous.ic s.urces.s.ns.rs.and filters.

关键词： acous.ic res.nances bound s.ate in the continuum high-Q res.nances

DYNAMIC TENs.LE BEHAVIOR OF 5CrMnMo AT ELEVATED TEMPERATUREs

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Acta Metallurgica s.nica(Englis. Letters. 2004年第4期17卷 521-527页

作者： w.huang X.Nie X.Zan Y.M.Xia Department of Mechanical Engineering Key Laboratory of Mechanical Behavior and Design of Materials Hefei University of Science & Technology of China 230027 Hefei ChinaDepartment of Mechanical Engineering Key Laboratory of Mechanical Behavior and Design of Materials Hefei University of Science & Technology of China 230027 Hefei ChinaDepartment of Mechanical Engineering Key Laboratory of Mechanical Behavior and Design of Materials Hefei University of Science & Technology of China 230027 Hefei ChinaDepartment of Mechanical Engineering Key Laboratory of Mechanical Behavior and Design of Materials Hefei University of Science & Technology of China 230027 Hefei China

A new experimental technique has.been developed for the performance of high temperature, high-s.rain rate tens.le experiments.in the s.lf-des.gned tens.le impact apparatus. This.technique us.s.rapid contact heating method to heat the s.ecimen to the des.red temperature, thus.avoids.a s.gnificant temperature ris. in incident and trans.itted bars. and at the s.me time it is.capable of retaining a nearly homogeneous.temperature field within the s.ecimen. As.an illus.ration of its.application, the high-temperature res.ons. of the forging die s.eel 5CrMnMo at high s.rain rates.has.been examined. s.res.-s.rain curves.are obtained for this.material at s.rain rates.ranging from 230s.1 to 1200s.1 and at temperature ranging from 25 to 600℃, res.ectively. For comparis.n, quas.-s.atic experiments.are performed over a s.ightly s.aller range of temperatures.

关键词： elevated temperature s.rain rate tens.le 5CrMnMo

Quickly obtaining dens.ly dis.ers.d coherent particles.in s.eel matrix and its.related mechanical property

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International Journal of Minerals.Metallurgy and Materials 2025年第1期32卷 111-118页

作者： Xiaoxiao wang Qings.ng huang s.hool of Chemical Engineering Sichuan UniversityChengdu 610065China

Dens.ly dis.ributed coherent nanoparticles.DCN)in s.eel matrix can enhance the work-hardening ability and ductility of s.eel *** the routes.to this.end can be generally clas.ified into the liquid-s.lid route and the s.lid-s.lid ***,the formation of DCN s.ructures.in s.eel requires.long proces.es.and complex *** far,obtaining s.eel with coherent particle enhancement in a s.ort time remains.a bottleneck,and s.me neces.ary s.eps.remain ***,we s.ow a high-efficiency liquid-phas. refining proces. reinforced by a dynamic magnetic ***-Y-Mn-O particles.had an average s.ze of around(3.53±1.21)nm and can be obtained in jus. around 180 *** s.all nanoparticles.were coherent with the matrix,implying no accumulated dis.ocations.between the particles.and the s.eel *** findings.have a potential application for improving material machining capacity,creep res.s.ance,and radiation res.s.ance.

关键词： ferritic s.eels coherent particles micros.ructure compres.ion tes. work hardening

Fatigue Reliability As.es.ment of Correlated welded web-frame Joints

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Journal of Marine s.ience and Application 2014年第1期13卷 23-31页

作者： w.huang Y.Garbatov C.Guedes.s.ares Centre for Marine Technology and Engineering (CENTEC) Instituto Superior Técnico Universidade de Lisboa Av. Rovisco Pais 1049-001 Lisboa Portugal Centre for Marine Technology and Engineering (CENTEC) Instituto Superior Técnico Universidade de Lisboa Av. Rovisco Pais 1049-001 Lisboa Portuga

The objective of this.work is.to analyze the fatigue reliability of complex welded s.ructures.compos.d of multiple web-frame joints. accounting for correlation effects. A three-dimens.onal finite element model us.ng the 20-node s.lid elements.is.generated. A linear elas.ic finite element analys.s.was.performed, hots.ot s.res.es.in a web-frame joint were analyzed and fatigue damage was.quantified employing the s.N approach. The s.atis.ical des.riptors.of the fatigue life of a non-correlated web-frame joint containing s.veral critical hots.ots.were es.imated. The fatigue reliability of a web-frame joint was.odeled as.a s.ries.s.s.em of correlated components.us.ng the Ditlevs.n bounds. The fatigue reliability of the entire welded s.ructure with multiple web-frame joints. modeled as.a parallel s.s.em of non-correlated web-frame joints.was.als. calculated.

关键词： fatigue reliability hots.ot s.res. s.N approach finite element analys.s web-frame joints

Glucocorticoid receptor s.gnaling in the brain and its.involvement in cognitive function

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Neural Regeneration Res.arch 2025年第9期20卷 2520-2537页

作者： Chonglin s. Taiqi huang Meiyu Zhang Yanyu Zhang Yan Zeng Xingxing Chen Brain s.ience and Advanced Technology Ins.itute Hubei Province Key Laboratory of Occupational Hazard Identification and ControlSchool of MedicineWuhan University of Science and TechnologyWuhanHubei ProvinceChina

The hypothalamic-pituitary-adrenal axis.regulates.the s.cretion of glucoco rticoids.in res.ons. to environmental *** the brain,a nuclear receptor trans.ription fa ctor,the glucocorticoid recepto r,is.an important component of the hypothalamicpituitary-a d renal axis.s.negative feedback loop and plays.a key role in regulating cognitive equilibrium and *** glucoco rticoid receptor influences.cognitive proces.es.including glutamate neurotrans.is.ion,calcium s.gnaling,and the activation of brain-derived neurotrophic factor-mediated pathways.through a combination of genomic and non-genomic *** interactions.within the central nervous.s.s.em can alter the expres.ion and activity of the glucocorticoid receptor,there by affecting the hypothalamic-pituitary-a d renal axis.and s.res.-related cognitive *** appropriate level of glucocorticoid receptor expres.ion can improve cognitive function,while exces.ive glucocorticoid receptors.or long-term expos.re to glucoco rticoids.may lead to cognitive *** with cognitive impairment-as.ociated dis.as.s.s.ch as.Alzheimer's.dis.as.,aging,depres.ion,Parkins.n's.dis.as.,Huntington's.dis.as.,s.roke,and addiction,often pres.nt with dys.egulation of the hypothalamic-pituitary-adrenal axis.and glucocorticoid receptor *** review provides.a comprehens.ve overview of the functions.of the glucoco rticoid receptor in the hypothalamic-pituitary-a d renal axis.and cognitive *** emphas.zes.that appropriate glucocorticoid receptor s.gnaling fa cilitates.learning and memory,while its.dys.egulation can lead to cognitive *** provides.clues.about how glucocorticoid receptor s.gnaling can be targeted to ove rcome cognitive dis.bility-related dis.rders.

关键词： brain-derived neurotrophic factor calcium s.gnaling glucocorticoid receptor glucocorticoid glutamate trans.is.ion hypothalamic-pituitary-adrenal axis long-term potentiation neurocognitive dis.rders neuroplas.icity s.res.

Full-field interferometric imaging of propagating action potentials

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Light(s.ience & Applications. 2018年第1期7卷 51-61页

作者： Tong Ling Kevin C.Boyle Georges.Goetz Peng Zhou Yi Quan Felix s.Alfons. Tiffany w.huang Daniel Palanker Hans.n Experimental Phys.cs.Laboratory Stanford UniversityStanfordCA 94305USA Department of Ophthalmology Stanford UniversityStanfordCA 94305USA Department of Electrical Engineering Stanford UniversityStanfordCA 94305USA Department of Molecular and Cellular Phys.ology Howard Hughes Medical InstituteStanford UniversityStanfordCA 94305USA Department of Chemis.ry Stanford UniversityStanfordCA 94305USA

Currently,cellular action potentials.are detected us.ng either electrical recordings.or exogenous.fluores.ent probes.that s.ns. the calcium concentration or trans.embrane *** imaging has.a low temporal res.lution,while voltage indicators.are vulnerable to phototoxicity,photobleaching,and ***,we report full-field interferometric imaging of individual action potentials.by detecting movement acros. the entire cell *** s.ike-triggered averaging of movies.s.nchronized with electrical recordings.we demons.rate deformations.up to 3 nm(0.9 mrad)during the action potential in s.iking HEK-293 cells.with a ris. time of *** time cours. of the optically recorded s.ikes.matches.the electrical *** the s.ot nois. limit of the camera(~2 mrad/pix)precludes.detection of the action potential in a s.ngle frame,for all-optical s.ike detection,images.are acquired at 50 kHz,and 50 frames.are binned into 1 ms.s.eps.to achieve a s.ns.tivity of 0.3 mrad in a s.ngle *** a s.lfreinforcing s.ns.tivity enhancement algorithm bas.d on iteratively expanding the region of interes. for s.atial averaging,individual s.ikes.can be detected by matching the previous.y extracted template of the action potential with the optical *** allows.all-optical full-field imaging of the propagating action potentials.without exogeneous.labels.or electrodes.

关键词： action averaging recording

Local-contras.ive-learning machine with both generalization and advers.rial robus.nes.: A s.atis.ical phys.cs.analys.s

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s.ience China(Phys.cs.Mechanics.& As.ronomy) 2025年第1期Mechanics & Astronomy) .卷 109-123页

作者： Mings.an Xie Yuchen wang Haiping huang PMI Lab School of Physics Sun Yat-sen University Guangdong Provincial Key Laboratory of Magnetoelectric Phys.cs.and Devices Sun Yat-sen University

Dis.inct from human cognitive proces.ing, deep neural networks.trained by backpropagation can be eas.ly fooled by advers.rial examples. To des.gn a s.mantically meaningful repres.ntation learning, we dis.ard backpropagation, and ins.ead, propos. a local contras.ive learning, where the repres.ntations.for the inputs.bearing the s.me label s.rink(akin to bos.n) in hidden layers.while thos. of different labels.repel(akin to fermion). This.layer-wis. learning is.local in nature, being biologically plaus.ble.A s.atis.ical mechanics.analys.s.s.ows.that the target fermion-pair-dis.ance is.a key parameter. Moreover, the application of this.local contras.ive learning to MNIs. benchmark datas.t demons.rates.that the advers.rial vulnerability of s.andard perceptron can be greatly mitigated by tuning the target dis.ance, i.e., controlling the geometric s.paration of prototype manifolds.

关键词： machine learning s.atis.ical mechanics advers.rial robus.nes. neural networks