曲軸網(wǎng)格劃分示意

使用HM8.0制作六面體曲軸網(wǎng)格模型1.根據(jù)曲軸的對稱性，先對四分之一曲拐劃分網(wǎng)格，二分之一、單拐可通過鏡像得到。2.Geom/solids將面（surf）轉(zhuǎn)為體（solid）n■I!R&IS芒Ia—7i,l*EdaEV□hQr^uise-i□“■■thyHnhECtS?Luphi-clnTaali.Applic>ttanin■I!R&IS芒Ia—7i,l*EdaEV□hQr^uise-i□“■■thyHnhECtS?Luphi-clnTaali.Applic>ttaniBbihILxFrafw-inmH?lpErdteLMedel|UH血|爭□如swnbJyHieiafclv->Cor何曲口*FbeqJD=*GmITiB母歸好Ph蟲*SoitLMJ屮事乳kFiftjp'-□<TmpSolidEdririrhi■yjttinodesculline-wTthbojndingIhes-solids*先比爭irdude.廠E^rtBncltimmer口wHiddhlhe&葉vriUiplarif/iurlrmergeCdetach廠booleanwriisv^eplins$:trimsolids[4rejEciIn日1徹|hg'Maeptci::|tiyeivector|9Z-ewr3Tweepall1ngiU-D1cortip:aTemp圖1Geom/solidsedit將體切分為數(shù)塊；主要是要控制圓角處網(wǎng)格質(zhì)量，沿圓角特征線外擴少許（如圖中1、2、3、4線）切分可通過Geom/circles創(chuàng)建線1、2、3、4再沿圖中線5切分體，以便對曲柄銷圓角和主軸徑圓角網(wǎng)格進行分別控制用2D/automesh分別對圖1中的A、B面劃分四邊形的面網(wǎng)格，建議放于不同的collecter中。著重控制圓角處網(wǎng)格層數(shù)、質(zhì)量，并且最好在切割時就使A、B區(qū)域大小接近，面網(wǎng)格密度數(shù)量盡量一直，以便能在曲柄銷圓角和主軸徑圓角網(wǎng)格相接處也能產(chǎn)生高質(zhì)量網(wǎng)格。如圖2所示。FileEditViewOrgaitizeGeometryMeshBCsSetupChecksToolsApplicationsResultsPreferencesHelpModel|Utility|Entities田門AssemblyHierarchy1白■[基Components：[12]I'■■J?CF'22p-□令Model|Utility|Entities田門AssemblyHierarchy1白■[基Components：[12]I'■■J?CF'22p-□令CF'33[-□令CF'faces[…回令Face_2D?■■j令Geornk-□令M-Jfaces?j?M.Jfaces22h-j令MJfaces33I-□?Solid_CF'inj_l令Solid_M-J：????□令solidmap；回金Temp□□□□□□□□□□□□include:|comp:□TempMesh▼|surfs<?sizeandbiasCQIoptimize■redgedeviationcsurfacedeviationHj10.00c?1elemstosurfcomp「mesh|quads言|firstorderreject|elementsizemeshtype:sizecontrol±1Crigidbodymesh半|iriterstctiv日Hskewcontrol廠breakconnectivity|previoussettings廠linkoppositeedgesunm日shedsurfs|failedsurfs|II他turnII圖2Q以曲柄銷圓角處為例，生成3D六面體網(wǎng)格。如圖3用3D/solidmap菜單，注意控制alonggeom，確保網(wǎng)格沿幾何面和特征線產(chǎn)生。建議每次體網(wǎng)格產(chǎn)生后，都點擊equiv/faces,以便equiv節(jié)點和產(chǎn)生faces，并在最左邊model面板中修改Afaces（臨時的）名稱，方便為后續(xù)生成體網(wǎng)格提供elems（elemstodrag）。同理，修改新生成的solidmap名。第一次生成體網(wǎng)格的destgeom（surf）選定為由線3與線1、2切分出的面，如圖3所示。Q同Q中所述，3D/solidmap出主軸徑圓角的一部分體網(wǎng)格，destgeom（surf）為線1與線3、4切分出的面，如圖4所示。Q3D/solidmap出曲柄銷圓角與主軸徑圓角發(fā)生重疊的部分，建議組合使用alonggeom：mixed下的surf、elems、line、nodepath選項，以便生成節(jié)點對應得網(wǎng)格。Q4剩余圓角處網(wǎng)格即可輕松產(chǎn)生了，而非圓角處區(qū)域應基于圓角處產(chǎn)生的面網(wǎng)格逐步產(chǎn)生。可根據(jù)需要靈活對幾何實體再分塊（比如加載面），利用equiv/faces生成的faces可方便產(chǎn)生剩余網(wǎng)格。必要時可用tool/faces中的previewequiv和equivalence將節(jié)點一一對應；可用2D/qualityindex檢查面網(wǎng)格質(zhì)量并調(diào)整；用tool/checkelems檢查體網(wǎng)格。EditViewEditViewBCsSetupChecksToolsApplicationsResultsPreferencesHelpModel|Utility|ISIS谿K?EntitiesAssemblyHierarchy基Components(12)

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