多輥冷軋機(jī)壓下位置對板帶橫向應(yīng)力分布的,黃燦,王宇,ThePositionofscrew-downdeviceofMulti-HiRollingMillEffectontheStressDistributingofStrip:.Inordertoimproveproductqualityofthemulti-highmill,theyzedresultbasedonFEMsimulation,theeffectofthecylinders’positiononstrip’stransversestressdistribution,hasbeenappliedtostripmanufacture,andgoodresulthasbeengained.:themulti-hrollingmill,thestressdistributingofstrip,finiteelement,simulation,thepositionofscrew-downdevice的因素非常多：來料板形、軋制規(guī)程、軋輥熱凸度、冷卻等因素；調(diào)整板形的也很多，例如：原模2.5mm

1三維幾何模Fig.1Thethree-dimensionalgeometrical上的左右張力為9.8×104N；在牌坊的底部建立一個固定面。邊界條件如下圖所示：

2邊界條Fig.2Boundary1單元格劃分Table1Comparisonbetweencalculateddatainscheduleandmeasured單元大小3網(wǎng)格劃Fig.3Meshing名楊氏模量密度(kg名楊氏模量密度(kg2.4.21234結(jié)果分4中心距小于埃里支點(diǎn)的板帶應(yīng)力分布趨勢線Fig.4Thestressdistributiontrendlinegraphonwhichthecylinders'intervallessthanAlisupporting5中心距為埃里支點(diǎn)的板帶應(yīng)力分布趨勢線Fig.5ThestressdistributiontrendlinegraphonAlisupportingFig.6Thestressdistributiontrendlinegraphonwhichthecylinders'intervalmorethanAlisupporting

7輥箱邊部壓下的板帶應(yīng)力分布趨Fig.7Thestressdistributiontrendlinegraphonwhichtherollingdownpositionisonchockw狀,失去了傳統(tǒng)拋物線孔型中帶材自動對中的功能.最大最小壓應(yīng)力之差為8MPa.8不同壓下位置中心距的板帶應(yīng)力分布趨勢線對比Fig.8Thestressdistributiontrendlinecontrastgraphondifferentcylinders'心距大于埃里支點(diǎn)的情況更為突出。其孔型呈大拋物線狀,最大最小壓應(yīng)力之差為38MPa.于其孔型呈w狀,失去了傳統(tǒng)拋物線孔型中帶材自動對中的功能.故影響了軋制速度和道次壓下率,影傅作寶.冷軋薄鋼板生產(chǎn).冶金工業(yè)Y.Y.Yangetc.Roll andTorquePredictionUsingNeuralNetworkandFiniteElementModelling[J].ISIJInternational,2003,43(12):1957-1966.C.G.SUN,Y.Y.LEE,Y.D.LEEandS.M.HWANG.FiniteElementModelingofThermo-mechanicalandMetallurgicalBehaviorofType304StainlessSteelinColdStripRolling[J].I