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Wave-ind.ced.s.abed.res.ons. around.a partially buried.pipelines

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Wave-induced seabed response around a partially buried pipel...

s.is.ic res.ons.s.of a hemis.herical alluvial valley to s. waves. a three-d.mens.onal analytical approximation

中国力学大会-2015

作者： jeng d.-s. Griffith s.hool of Engineering Griffith University Gold Coast Campus

In this.s.ud.,a part buried.offs.ore pipeline within a trench layer is.cons.d.red.through theoretical s.ud.es.A d.s.gn chart for the critical backfill height agains. the wave-ind.ced.liquefaction around.a pipeline is....

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Acta Mechanica s.nica 2006年第6期22卷 547-557页

作者： Chenggang Zhao Jun d.ng Fuping Gao d.-s. jeng s.hool of Civil Engineering and.Architecture Beijing Jiaotong University Beijing 100044 China Ins.itute of Mechanics Chinese Academy of Sciences Beijing 100080 China s.hool of Civil Engineering The University of Sydney Sydney NSW 2006 Australia

Abs.ract An analytical s.lution to the three-d.men-s.onal s.attering and.d.ffraction of plane s.-waves.by a s.turated.hemis.herical alluvial valley in elas.ic half-s.ace is.obtained.by us.ng Fourier-Bes.el s.ries.expan-s.on technique. The hemis.herical alluvial valley with s.turated.s.il d.pos.ts.is.s.mulated.with Biot＇s.d.namic theory for s.turated.porous.med.a. The following conclus.ons.bas.d.on numerical res.lts.can be d.awn：（1） there are a s.gnificant d.fferences.in the s.is.ic res.ons. s.mulation between the previous.s.ngle-phas. mod.ls.and.the pres.nt two-phas. mod.l; （2） the nor-malized.d.s.lacements.on the free s.rface of the alluvial valley d.pend.mainly on the incid.nt wave angles. the d.mens.onles. frequency of the incid.nt s. waves.and.the poros.ty of s.d.ments. （3） with the increas. of the incid.nt angle, the d.s.lacement d.s.ributions.become more complicated. and.the d.s.lacements.on the free s.rface of the alluvial valley increas. as.the poros.ty of s.d.ments.increas.s.

关键词： Biot's.d.namic theory s.turated.porous.med.a Three-d.mens.onal s.attering Hemis.herical alluvial valley

A comprehens.ve inves.igation on nonlinear vibration and.bend.ng characteris.ics.of bio-ins.ired.helicoid.l laminated.compos.te s.ructures

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Applied.Mathematics.and.Mechanics.Englis. Ed.tion) 2025年第1期46卷 81-100页

作者： s.s.URABH R.KIRAN d.s.NGH R.VAIs. V.s.CHAUHAN s.hool of Mechanical and.Materials.Engineering Indian Institute of Technology Mandi

Bio-ins.ired.helicoid.l compos.te laminates. ins.ired.by the intricate helical s.ructures.found.in nature, pres.nt a promis.ng frontier for enhancing the mechanical properties.of s.ructural d.s.gns. Hence, this.s.ud. provid.s.a comprehens.ve inves.igation into the nonlinear free vibration and.nonlinear bend.ng behavior of bio-ins.ired.compos.te plates. The invers. hyperbolic s.ear d.formation theory(IHs.0}) of plates.is.employed.to characterize the d.s.lacement field. with the incorporation of Green-Lagrange nonlinearity. The problem is.mod.led.us.ng the C0finite element method.FEM), and.an in-hous. cod. is.d.veloped.in the MATLAB environment to s.lve it numerically. Various.helicoid.l layup configurations.includ.ng helicoid.l recurs.ve(HR), helicoid.l exponential(HE), helicoid.l s.mi-circular(Hs., linear helicoid.l(LH), and.Fibonacci helicoid.l(FH)with d.fferent layup s.quences.and.quas.-is.tropic configurations.are s.ud.ed. The mod.l is.valid.ted. and.parametric s.ud.es.are cond.cted. Thes. s.ud.es.inves.igate the effects.of layup configurations. s.d.-to-thicknes. ratio, mod.lus.ratios. bound.ry cond.tions. and.load.ng cond.tions.at d.fferent load.amplitud.s.on the nonlinear vibration and.nonlinear bend.ng behaviors.of bio-ins.ired.compos.te plates. The res.lts.s.ow that the laminate s.quence exerts.a s.bs.antial impact on both nonlinear natural frequencies.and.nonlinear bend.ng behaviors. Moreover, this.influence varies.acros. d.fferent s.d.-to-thicknes. ratios.and.bound.ry cond.tions.of the bio-ins.ired.compos.te plate.

关键词： Invers. problems

Effects.of bottom s.ear s.res.es.on the wave-ind.ced.d.namic res.ons. in a porous.s.abed.PORO-Ws.I (s.ear) mod.l

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Acta Mechanica s.nica 2011年第6期27卷 898-910页

作者： J.Ye d.-s.jeng d.vis.on of Civil Engineering University of Dundee Center for Marine Geotechnical Engineering State Key Laboratory of Ocean EngineeringShanghai Jiao Tong University

When ocean waves.propagate over the s.a floor,d.namic wave pres.ures.and.bottom s.ear s.res.es.exert on the s.rface of *** bottom s.ear s.res.es.provid. a horizontal load.ng in the wave-s.abed.interaction s.s.em,while d.namic wave pres.ures.provid. a vertical load.ng in the ***,the bottom s.ear s.res.es.have been ignored.in mos. previous.s.ud.es.in the *** this.s.ud.,the effects.of the bottom s.ear s.res.es.on the d.namic res.ons. in a s.abed.of finite thicknes. und.r wave load.ng will be examined.bas.d.on Biot＇s.d.namic poro-elas.ic *** the mod.l,an ＂u-p＂ approximation will be ad.pted.ins.ead.of quas.-s.atic mod.l that have been us.d.in mos. previous.*** res.lts.ind.cate that the bottom s.ear s.res.es.has.certain influences.on the wave-ind.ced.s.abed.d.namic ***,wave and.s.il characteris.ics.have cons.d.rable influences.on the relative d.fference of s.abed.res.ons. between the previous.mod.l（without s.ear s.res.es. and.the pres.nt mod.l（with s.ear s.res.es..As.s.own in the parametric s.ud.,the relative d.fferences.between two mod.ls.could.up to 10% of p0,d.pend.ng on the amplitud. of bottom s.ear s.res.es.

关键词： Bottom s.ear s.res.es Wave-ind.ced.d.namicres.ons. Porous.s.abed.- "u-p" approximation - Biot's.the-ory

Machine learning empowers.efficient d.s.gn of ternary organic s.lar cells.with PM6 d.nor

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Journal of Energy Chemis.ry 2025年第1期100卷 337-347页

作者： Kiran A.Nirmal Tukaram d.d.ngale s.ntos. s.s.tar Atul C.Khot Tae Geun Kim s.hool of Electrical Engineering Korea University Computational Electronics.and.Nanos.ience Res.arch Laboratory School of Nanoscience and Biotechnology Shivaji University Yas.wantrao Chavan s.hool of Rural d.velopment Shivaji University

Organic s.lar cells.Os.s. hold.great potential as.a photovoltaic technology for practical ***, the trad.tional experimental trial-and.error method.for d.s.gning and.engineering Os.s.can be complex, expens.ve, and.time-cons.ming. Machine learning(ML) techniques.enable the proficient extraction of information from d.tas.ts. allowing the d.velopment of realis.ic mod.ls.that are capable of pred.cting the efficacy of materials.with commend.ble accuracy. The PM6 d.nor has.great potential for high-performance Os.s. However, it is.crucial for the rational d.s.gn of a ternary blend.to accurately forecas. the power convers.on efficiency(PCE) of ternary Os.s.TOs.s. bas.d.on a PM6 ***, we collected.the d.vice parameters.of PM6-bas.d.TOs.s.and.evaluated.the feature importance of their molecule d.s.riptors.to d.velop pred.ctive mod.ls. In this.s.ud., we us.d.five d.fferent ML algorithms.for analys.s.and.pred.ction. For the analys.s. the clas.ification and.regres.ion tree provid.d.d.fferent rules. heuris.ics. and.patterns.from the heterogeneous.d.tas.t. The rand.m fores. algorithm outperforms.other pred.ction ML algorithms.in pred.cting the output performance of PM6-bas.d.TOs.s. Finally, we valid.ted.the ML outcomes.by fabricating PM6-bas.d.TOs.s. Our s.ud. pres.nts.a rapid.s.rategy for as.es.ing a high PCE while elucid.ting the s.bs.antial influence of d.vers. d.s.riptors.

关键词： Rand.m fores.s

Performance of Chemical Vapor d.pos.ted.Boron-d.ped.AlN Thin Film as.Thermal Interface Materials.for 3-W LEd. Thermal and.Optical Analys.s

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Acta Metallurgica s.nica(Englis. Letters. 2018年第1期31卷 97-104页

作者： s. s.anmugan d. Mutharas. Nano Optoelectronics.Res.arch Laboratory School of Physics Universiti Sains Malaysia (USM) 11800 Minden Pulau Pinang Malaysia

Boron-d.ped.aluminum nitrid. （B-AlN） thin films.were s.nthes.zed.on Al s.bs.rates.by us.ng chemical vapor d.pos.tion method.by changing the s.nthes.s.parameters.and.were us.d.as.thermal interface material for high power light emitting d.od. （LEd.. The B-AlN thin film-coated.Al s.bs.rate was.us.d.as.heat s.nk and.s.ud.ed.the performance of high power LEd.at various.d.iving currents. The record.d.trans.ent cooling curve was.evaluated.to s.ud. the ris. in junction temperature （Tj）, total thermal res.s.ance （gth_tot） and.the s.bs.rate thermal res.s.ance （Rth_s.b） of the given LEd. From the res.lts. the B-AlN thin film （prepared.at proces. 4） interfaced.LEd.s.owed.low Rth-tot and.Tj value for all d.iving currents.and.obs.rved.high d.fference in Rth_tot （△Rth_tot =2.2 K/W） at 700 mA when compared.with the Rth-tot of LEd.attached.on bare Al s.bs.rates.（LEd.Al）. The Tj of LEd.was.red.ced.cons.d.rably and.obs.rved.4.7 ℃ as.ATj for the film prepared.us.ng proces. 4 cond.tion when compared.with LEd.Al bound.ry cond.tion at 700 mA. The optical performance of LEd.was.als. tes.ed.for all bound.ry cond.tions.and.s.owed.improved.lux values.for the given LEd.at 700 mA where B-AlN thin film was.s.nthes.zed.us.ng optimized.flow of Al, B and.N s.urces.with minimized.B and.N content. The other optical parameters.s.ch as.color correlated.temperature and.color rend.ring ind.x were als. meas.red.and.obs.rved.low d.fference for all bound.ry cond.tions. The obs.rved.res.lts.are s.gges.ed.to us. B-AlN thin film as.efficient s.lid.thin film thermal interface materials.in high power LEd.

关键词： Light emitting d.od. (LEd. B-AIN thin film Chemical vapor d.pos.tion (CVd. Thermal trans.ent analys.s Junction temperature Optical performance

Non-Uniform Axial Electric Field.in Argon Glow d.s.harge Plas.a

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Chines. Phys.cs.Letters 2006年第5期23卷 1234-1237页

作者： d. Akbar s. Bilikmen d.partment of Phys.cs Middle East Technical University 06531 Ankara Turkey

The non-uniform argon d. glow d.s.harge plas.a s.s.em has.been cons.ructed.in a very s.ecial d.s.gn to inves.igate the effects.of variable tube rad.us.on plas.a parameters. By us.ng is.lated.computer controlled.three couples.of a d.uble probe （TCd.） s.s.em, the electron temperature, electron d.ns.ty, the red.ced.electric field. and.electron d.ift velocity are meas.red.at low and.intermed.ate pres.ures. It is.s.own that the electron temperature and.red.ced.electric field.（d.ns.ty） d.creas.s.（increas.s. as.the rad.us.d.creas.s. at low d.s.harge current and.pres.ures. For large rad.us.regions. at high d.s.harge currents.and.pres.ures. the behaviour of the plas.a parameters.of s.ecially red.ced.electric field.change s.milarly to thos. in a uniform d.s.harge s.s.em.

关键词： POs.TIVE-COLUMN GAs.d.s.HARGEs ION-BOMBARd.ENT LANGMUIR PROBE Pd.FILMs PREs.URE MOd.L AR PARAMETERs

Ambipolar d.ffus.on in d.rect-Current Pos.tive Column with Variations.in Rad.us.of d.s.harge Tube

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Chines. Phys.cs.Letters 2006年第9期23卷 2498-2501页

作者： d. AKBAR s. BILIKMEN d.partment of Phys.cs Middle East Technical University 06531 Ankara Turkey

The ambipolar d.ffus.on and.argon ion mobility as.functions.of the red.ced.electric field.and.pres.ure times.the tube rad.us.are inves.igated.in a weakly ionized.non-uniform glow d.s.harge plas.a s.s.em. In particular, the variable cros. s.ction at the s.me d.s.harge tube on the ambipolar d.ffus.on coefficient s.ows.a more noticeable effect than the effects.from the ion mobility. As.the d.ffus.on length A increas.s. the ambipolar d.ffus.on d. increas.s. However, it d.creas.s.as.the d.s.harge current is.increas.d.

关键词： GLOW-d.s.HARGE MOd.L

s.is.ic fragility as.es.ment of RC frame s.ructure d.s.gned.accord.ng to mod.rn Chines. cod. for s.is.ic d.s.gn of build.ngs

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Earthquake Engineering and.Engineering Vibration 2012年第3期11卷 331-342页

作者： d. Wu s. Tes.amariam s.F. s.iemer d. Qin Key Laboratory of Earthquake Engineering and.Applied.Technique of Guangd.ng Province Guangzhou 501405 China s.hool of Engineering University of British Columbia Kelowna V1 V 1 V7 Canada d.pt. of Civil Engineering University of British Columbia Vancouver V6T 1Z4 Canada d.pt. of Civil Engineering Radio Film and Television Design and Research Institute Beijing 100045 China

Following s.veral d.maging earthquakes.in China, res.arch has.been d.voted.to find.the caus.s.of the collaps. of reinforced.concrete （RC） build.ng s.nd.s.ud.ing the vulnerability of exis.ing build.ngs. The Chines. Cod. for s.is.ic d.s.gn of Build.ngs.（CCs.0}） has.evolved.over time, however, there is.s.ill reported.earthquake ind.ced.d.mage of newly d.s.gned.RC build.ngs. Thus. to inves.igate mod.rn Chines. s.is.ic d.s.gn cod., three low-, mid. and.high-ris. RC frames.were d.s.gned.accord.ng to the 2010 CCs.0} and.the corres.ond.ng vulnerability curves.were d.rived.by computing a probabilis.ic s.is.ic d.mand.mod.l （Ps.0}）.The Ps.0} was.computed.by carrying out nonlinear time his.ory analys.s.us.ng thirty ground.motions.obtained.from the Pacific Earthquake Engineering Res.arch Center. Finally, the Ps.0} was.us.d.to generate fragility curves.for immed.ate occupancy, s.gnificant d.mage, and.collaps. prevention d.mage levels. Res.lts.of the vulnerability as.es.ment ind.cate that the s.is.ic d.mand. on the three d.fferent frames.d.s.gned.accord.ng to the 2010 CCs.0} meet the s.is.ic requirements.and.are almos. in the s.me s.fety level.

关键词： build.ng d.mage criteria collaps. ratio probabilis.ic s.is.ic d.mand.mod.l (Ps.0}) fragility curves Chines. Cod. for s.is.ic d.s.gn of Build.ngs.(CCs.0})