ansys面與面接觸分析實(shí)例.doc

面與面接觸實(shí)例：插銷撥拉問題分析定義單元類型Element/add/edit/delete定義材料屬性Material Props/Material ModelsStructural/Linear/Elastic/Isotropic定義材料的摩擦系數(shù)建立幾何模型Modeling/Create/Volumes/Block/By DimensionsX1=Y1=0，X2=Y2=2，Z1=2.5，Z2=3.5Modeling/Create/Volumes/Cylinder/By DimensionsModeling/Operate/Booleans/Subtract/Volumes先拾取長方體，再拾取圓柱體。Modeling/Create/Volumes/Cylinder/By Dimensions劃分掠掃網(wǎng)格Meshing/Size Cntrls/ManualSize/Lines/Picked Lines拾取插銷前端的水平和垂直直線，輸入NDIV=3再拾取插座前端的曲線，輸入NDIV=4PlotCtrls/Style/Size and Shape，在Facets/element edge列表中選擇2 facets/edge建立接觸單元Modeling/Create/Contact pair，彈出Contact Manager對話框，如圖所示。單擊最左邊的按鈕，啟動(dòng)Contact Wizard（接觸向?qū)В?，如圖所示。單擊Pick Target，選擇目標(biāo)面。選擇接觸面定義位移約束施加對稱約束，Define Loads/Apply/Structural/Displacement/Symmetric B.C/On Areas，選擇對稱面。再固定插座的左側(cè)面。設(shè)置求解選項(xiàng)Analysis Type/Sols Control求解：Solve/Current LS繪制裝配應(yīng)力圖General Postproc/Plot Results/Contour Plot/Nodal Solution，選擇Stress/von Mises stress求解撥拉過程選擇Z=4.5處的所有節(jié)點(diǎn)。Define Loads/Apply/Structural/Displacement/On Nodes，彈出Apply U，ROT on Nodes拾取框，單擊Pick All按鈕，選擇UZ，在Displacement value輸入1.7Select/EverythingAnalysis Type/Sols ControlSolve/Current LS結(jié)果后處理擴(kuò)展模型：Style/Symmetry Expansion/Priodic/Cyclic Smmetry，在彈出的對話框中選擇1/4 Dihedral Sym選擇General Postproc/Read Results/By time/frequency，在TIME域輸入120。選擇插銷中與插座接觸的單元，在Select Entities中選擇Element，在列表中選擇By Element name，再Element Name域輸入174Plot/ElementsGeneral Postproc/Plot Results/Contour Plot/Nodal Solution，在對話框中選擇Contact / Contact Pressure 讀入載荷步2結(jié)果。Read Results/By Load Step繪制撥拉過程的應(yīng)變變化動(dòng)畫PlotCtrls/Animate/Over Results，彈出如圖所示的對話框。命令流操作：(1)建立幾何模型/filename,bolt/title,bolt_pulling analysis/PREP7Block,-2,2,-2,2,2.5,3.5/view,1,1,1,1/ang,1/rep,fastCylind,0.49,2.5,3.5,0,360Vsbv,1,2Cylind,0.5,2,4.5,0,360/pnum,volu,1Wpstyle,0.05,0.1,-1,1,0.003,0,0,5Wpstyle,1Wpro,90Wsbw,allVdele,4,1Vdele,6,1Wpcsys,-1,0Wpro,90Vsbw,allVdele,p51x,1Wpcsys,-1,0Wpstyle,0（2）定義單元類型、材料模型和網(wǎng)格劃分Et,1,solid185Mptemp,Mptemp,1,0Mpdata,ex,1,36e6Mpdata,prxy,1,0.3Lesize,4,3,0Lesize,10,3,0Lesize,18,4,0Vsweep,all/shrink,0/eshape,0.0/Efacet,2/ratio,1,1,1/cformat,32,0（3）定義接觸單元/com,contact pair creation-startCm,_nodecm,nodeCm,_elemcm,elemCm,_kpcm,kpCm,_linecm,lineCm,_areacm,areaCm,_volucm,volu/gsav,cwz,gsav,tempMp,mu,1,0.2Mat,1Mp,emis,1,7.88860905221e-031R,3Real,3Et,2,170Et,3,174R,3,0.1,0.1,0Rmore,1.0e20,0.0,1.0Rmore,0.0,0,1.0,0.5Rmore,0,1.0,1.0,0.0,1.0Keyopt,3,4,0Keyopt,3,5,0Nropt,unsymKeyopt,3,7,0Keyopt,3,8,0Keyopt,3,10,1Keyopt,3,11,0Keyopt,3,12,0Keyopt,3,2,0Keyopt,3,5,0Asel,s,23Cm,_target,areaType,2Nsla,s,1Esln,s,0EsurfCmsel,s,_elemcmAsel,s,27Cm,_contact,areaType,3Nsla,s,1Esln,s,0EsurfAllselEsel,allEsel,s,type,2Esel,a,type,3Esel,r,real,3/psymb,esys,1/pnum,type,1/num,1EplotEsel,allEsel,s,type,2Esel,a,type,3Esel,r,real,3Cmsel,a,_nodecmCmdel,_nodecmCmsel,a,_elemcmCmdel,_elemcmCmsel,s,_kpcmCmdel,_kpcmCmsel,s,_linecmCmdel,_linecmCmsel,s_areacmCmdel,_areacmCmsel,s,_volucmCmdel,_volucm/gres,cwz,gsavCmdel,_targetCmdel,_contact/com,contact pair creation-end(4)定義位移約束Finishaplot/soluFlst,2,4,5,orde,4Fitem,2,3Fitem,2,7Fitem,2,11Fitem,2,14Da,p51x,symmFlst,2,1,5,orde,1Fitem,2,19Da,p51x,all,0(5)求解裝配預(yù)應(yīng)力Antype,0Nlgeom,1Nsubst,1,0,0Autots,0Time,100/status,soluSolveFinish/post1/efacet,1Avprin,0Plnsol,s,eqv,0,1.0Save(6)求解撥拉過程AplotNsel,s,loc,z,4.5Finish/solAntype,restD,all,1.7,uz,Allsel,allNsrbst,100,10000,10Outres,eraseOutres,all,allOutots,1Time,200/status,soluSolveFinish(7)結(jié)果后處理/expand,4,polar,half,90Eplot/post1Set,1,120Esel