简介：爬Zr-1.5Nb-0.4Sn-0.1Fe-0.1Cu合金表的行为从50MPa在压力范围从300掳C被调查到400掳C到180MPa沿着滚动方向。测量紧张率从8.8脳10?10s?1～4.7脳10?7s?1。激活精力被估计在这合金估计creep变丑机制。紧张率是稍微在低应力的dierent，当它在高压力显示出不同dierence时。有增加的这合金增加的压力代表使用了根本测试温度的应力。Zr-1.5Nb-0.4Sn-0.1Fe-0.1Cu合金的creep变丑被diusion控制，这被结束在低压力区域并且由在高应力爬脱臼爬区域。

简介：Tosolvethecoupledvibrationofagravitydam-reservoirsystemwithvariablewaterdepthbyusingahybridelementmethod,thefluidregionwithvariablewaterdepthneedstobedis-cretizedbyFEmeshes.However,suchamethodasksforagreatcomputationalcostowingtotheex-cessiveunknowns,especiallywhenthefluidregionwithvariablewaterdepthisrelativelylarge.Toovercometheshortcoming,arefinedboundaryelementmethodisproposedtoanalyzethefluidfield,inwhichonlythediscretizationfortheboundaryofthevariabledepthregionisrequired.Butasabasisofthisapproach,itisnecessarytoconstructanewGreen’sfunctioncorrespondingtoaninfinitestripregion.TheproblemissolvedasthefirststepinthispaperbyemployingFridman’soperatorfunctiontheory,andthenamixedFE-BEformulationforanalyzingthefreevibrationofthegravitydam-reservoirsystemisderivedbymeansofthecouplingconditionsonthedam-reservoirinterface.Final-ly,anumericalexampleisprovidedtoillustrateagreatimprovementofthemethoddevelopedhereinoverthehybridelementmethod.

简介：Inthepaper,thenonlinearmagnetoelasticpropertiesofcompositionTb0.27Dy0.73Fe1.95<110>orientedpolycrystallinealloysareinvestigatedundercoupledloadsofhighmagneticfieldandcompressivestress.Themagnetizationandmagnetostrictionaremeasuredsimultaneouslyunderappliedmagneticfieldfrom800to800kA/mandcompressivestressfrom0to25MPaatroomtemperature.Thestraincoefcientandrelativepermeabilityareobtainedbydiferentialcalculationfromtheexperimentalcurves.Theresultsshowthatthevaluesofsaturationmagnetization(Ms)underdiferentcompressivestressesremaininvariablyconstantintheregionofthehighmagneticfield.Thesaturationmagnetostriction(λs)increaseswithincreasingcompressivestressandreaches1680×106under25MPa.Accordingtotheincreaseofthecompressivestress,thehystereticloopareaofmagnetizationandmagnetostrictionincreases,whilethemaximumrelativepermeabilityandstraincoefcientdecrease.Additionally,theinfluenceofthebiasmagneticfieldonthemechanicalpropertyistakenintoaccount.Thestress-strainrelationshipisnonlinearandsensitivetotheappliedexternalmagneticfieldsalongtheaxisofrod.Theresultsobtainedareausefulcomplementtotheexistingexperimentsfortheoreticalapproachesandengineeringapplications.