ansys命令流----前后处理和求解常用命令之求解与后处理The ANSYS command stream - before and after the treatment and solving common commands of solving and postprocessing of.Txt is a mountain fox, you told me what all, standing in the place nearest to you, look you smile to others, even if the heart is all the pain just to keep your eye out. The glare of the bottom of every act and every move white, let me understand what is pure damage. 3 /soluU /solu enters the solver3.1 plus boundary conditionsU, D, node, lab, value, Value2, nend, Ninc, lab2, lab3,...... LaB6 defines node displacement constraintsNode: the node number of the pre displacement constraint. If it is all, all selected nodes are fully bound, and nend and ninc. are ignored at this timeLab:, UX, uy, UZ, ROTx, ROTY, Rotz, allThe value of Value, value2: degrees of freedom (default 0)Nend, ninc: node range is: node-nend, the number interval is NincLab2-lab6: applies lab2-lab6 to the selected node with the same value.Note: discussed in the node coordinate system3.2 set the solution optionU, antype, status, ldstep, substep, actionStatic analysis of antype:, static and or 1Buckling analysis of buckle or 2Modal or 3 modal analysisTransient analysis of trans or 4Status: new reanalysis (default), which will be ignored later Rest reanalysis is valid only for static, full, and transionLdstep: specifies which load step to proceed from the analysis and defaults to the maximum runn number (the last step of the analysis point)Substep: specifies which sub step to proceed from the analysis. The default is the highest number of sub steps in the runn file in this directoryAction, continue: continues to analyze the specified ldstep, substepExplanation: there are two types of continuous analysis (interrupted for some reason)Singleframe restart: continues from the stop pointRequired file: jobname.db must be saved immediately after initial solutionJobname.emat cell matrixJobname.esav or.Osav: if.Esav is broken, change.Osav to.EsavResults file: is not necessary, but if so, the results of subsequent analysis will be well attached to itNote: if the initial analysis generates a.Rdb,.Ldhi, or rnnn file. Deletion must be followed by subsequent analysisStep: (1) enter ANASYS with the same job name(2) enter the solver and restore the database(3) antype, rest(4) additional load is specified(5) specify whether to use the existing matrix (jobname.trl) (default rebuild)Kuse: 1 uses an existing matrix(6) solvingMultiframe restart: continues from any result with no result(no need)U, PRED, sskey -- -- lskey... Whether to open the predictor in nonlinear analysisSskey: off does not make predictions (when the degree of freedom is rotated or when SOLID65 is used, default is off)The first step was to predict on (unless there is a rotational degree of freedom or when using the SOLID65 default is on)- - unused variable zoneLskey: off does not predict when crossing load steps (default)On predicts when crossing load steps (at this time sskey must be simultaneous on)Note: the default value for this command assumes that solcontrol is onDoes u autots and key use automatic time steps?Key:on: when solcontrol is on, the default is onOff: when solcontrol is off, the default is off1: records in the.Log file "1" by the program selection (when solcontrol is on and does not occur the autots command"Note: the step size predictor and the two step size are alsoused when using the automatic time stepU, NROPT, option -- -- adptky specifies the options for Newton Ralph Xun Fa's solutionOPTION: AUTO: program selectionFULL: completely Newton Ralph Xun FaMODI: revised by Newton Ralph Xun FaINIT: using the initial stiffness matrixUNSYM: complete Newton Ralph Xun Fa, and allows asymmetric stiffness matricesADPTKY:ON: uses adaptive drop factorOFF: no adaptive drop factor is usedU, NLGEOM, KEYKEY: OFF: does not include geometric nonlinearity (default)ON: including geometric nonlinearityU, ncnv, kstop, dlim, itlim, etlim, cplim, terminate the analysis optionsKstop: 0, if the solution is not convergent, does not terminate the analysis1 if the solution does not converge, terminate the analysis and the program (default)2 if the solution does not converge, terminate the analysis, but do not terminate the programDlim: maximum displacement limit, defaults to 1.0e6Itlim: cumulative iteration limit, default to infinityEtlim: program execution time (seconds) limit, the default is infiniteCplim:cpu time (seconds) limit, default to infinityThe U, solcontrol, key1, key2, Key3, and VTOL specify whether or not to use some nonlinear solutions for default valuesKey1: on activates some optimized default values (default)CNVTOL, Toler=0.5%Minref=0.01 (for force and moment)NEQIT the maximum number of iterations is set between 15~26 depending on the modelARCLEN uses the more advanced method of ansys5.3 than using the arc length rulePRED unless ROTx, y, Z, or SOLID65 are openedLNSRCH automatically opens when exposedCUTCONTROL, Plslimit=15%, npoint=13SSTIF opens when NLGEOM, onNROPT, adaptkey closes (unless the frictional contact exists; the unit 12,26,48,49,52 exists; when the plastic is present and there is a unit 20,23,24,60)AUTOS is chosen by the programOff does not use these default valuesKey2: on checks the contact state (key1 at on)At this point, the time step is based on the contact state of the unit (assuming keyopt (7))When keyopt (2) =on, the time step is guaranteed to be small enoughKey3: stress loading stiffness control, use default values as much as possibleNull: by default, certain units include stress loading, stiffening, and certain ones (excluding)Nopl: does not include stress stiffening for any elementIncp: for some elements including stress load stiffening(check)Vtol:U, outres, item, freq, and CNAME specify the solution information for writing to the databaseItem: all all the solutionsBasic only writes nsol, rsol, nload, STRsNsol node freedomRsol node acting loadNload nodal loads and input strain loads (?)STRs node stressIf n is freq:, it is written once every n step (including the last step)None: does not write entries in this load stepAll: writes every stepLast: writes only the last step (default when static or transient)3.3 define the load stepThe U, nsubst, nsbstp, nsbmx, nsbmn, and carry specify the number of sub steps for this load stepNsbstp: the number of sub steps of this load stepIf automatic time step using autots, the number of the first definition step length; if solcontrol is open, and 3D surface to surface contact element is used, the default is 1-20; if solcontrol is open, there is no 3D contact element, the default is 1 steps; if the solcontrol is closed, the default value is specified as before; not previously specified, the default is 1)Nsbmx, nsbmn: at most, the minimum number of steps (if the automatic time step is turned on)?U time, time specifies the end time of the load stepNote: the end of the first step shall not be "0""U F, node, lab, Ninc, value, Value2, nend, plus concentrated load at the specified nodeNode: node numberLab:, Fx, Fy, Fz, Mx, My, MzValue: force sizeThe second magnitude of the force of value2: (if there is a complex load)Nend, Ninc: apply the same force on the node from node to nend (increment Ninc)Note: (1) the nodal force is defined in the nodal coordinate system, and the positive and negative forces are in direct agreement with the nodal coordinate axisU, SFA, area, lkey, lab, value, and Value2 add loads on the specified surfaceArea: n surface numberAll all selected numbersLkey: if it is the surface of the body, ignore this itemLab: presValue: pressure valueU, SFBEAM, ELEM, LKEY, LAB, VALI, VALJ, VAL2I, VAL2J, IOFFST, JOFFSTApply line load to the beam elementThe ELEM: cell number can be ALL, that is, the selected cellLKEY: surface mounted type number, see unit introduction. For BEAM188, 1 is vertical; 2 is transverse; 3 is tangentialPressure values at VALI, VALJ:, I, and J nodesVAL2I, VAL2J: is useless for the momentIOFFST, JOFFST:, line distance, I, J node distanceU, lswrite, lsnum write the load and load options into the load fileLsnum: the suffix of the load step file name, that is, the number of loading stepsWhen the stat column shows the current step numberInit reset to "1""The default is to add 1 to the current step"3.3.1 attention1. add as much load as possible without focusing so as to avoid singularitiesThe tangential load on the 2. plane must depend on the surface element3.4 load stepsU, lssolve, lsmin, lsmax, lsinc read and solve multiple loading stepsLsmin, lsmax, lsinc: load step file range4 /post1 (general postprocessing)U, set, lstep, sbstep, fact, king, time, angle, and nset set the data read from the result fileLstep: load stepsSbstep: child steps and defaults to the last stepTime: point of time (if the arc length rule does not)Nset:data set numberU, dscale, WN, dmult display deformation ratioWn: window number (or all), defaults to 1Dmult, 0 or Auto: automatically make the maximum deformation picture 5% of the length of the componentU, pldisp, and Kund display the structure of deformationKund:0 only shows the structure after deformation1 shows the structure before deformation and after deformation2 shows the deformation structure and the edge of the undeformed structureU, *get, par, node, N, u, X (y, z) obtain the X (y, z) shift of node n to parameter parEquivalent to the function UX (n), uy (n), UZ (z)Node (x, y, z): get the (x, y, z) node numberArnode (x, y, z): get the surface connected to the node nNote: this command can also be used with the /solu moduleU, fsum, lab, item, summation of nodal forces and moments of a unitLab: empty sum in the whole DeCarr coordinate systemRsys sums up in the current active rsys coordinate systemItem: empty sum for all selected units (not including contact elements)Cont: only sum the contact nodesU, PRSSOL, ITEM, COMP, print BEAM188, BEAM189 cross section resultsDescription: only when the calculation has not yet exited the ANSYS can be used and re entered the ANSYS is not availableItem comp cross section data and component markStress components of S, COMP, X, XZ and YZPRIN, S1, S2, S3, principal stress, SINT stress intensity, and SEQV equivalent stressEPTO COMP total strainPRIN total principal strain, strain strength and equivalent strainEPPL COMP plastic strain componentPRIN principal plastic strain, plastic strain strength, and equivalent plastic strainU, plnsol, item, comp, Kund, fact draw nodes, resulting in a continuous contour lineItem: project (see table below)Comp: componentKund: 0 does not display an undeformed structure1 deformation and deformation overlap2 deformation contours and undeformed edgesFact:'s coefficient of proportionality for exposure to 2D displays defaults to 1Item comp discriptionU, x, y, Z, sum shiftRot, x, y, Z, sum cornersS, x, y, Z, XY, YZ, XZ stress components1, 2, 3 principal stressesInt, EQV stress, intensity, equivalent stressEPEO, x, y, Z, XY, YZ, XZ total displacement components 1,2,3 principal strainInt, EQV strain, intensity, equivalent strainEPEL, x, y, Z, XY, YZ, and XZ elastic strain components 1, 2, 3 elastic principal strainInt, EQV, elastic intensity, elastic equivalent strain EPPL, x, y, Z, XY, YZ, XZ plastic strain componentsU PRNSOL, item, comp print select the node results Item: project (see above)Comp: componentU, PRETAB, LAB1, LAB2,...... Plotting unit table data along the length of units along LAB9LABn: null: column names specified by all ETABLE commandsColumn name: the column name specified by any ETABLE commandU, PLLS, LABI, LABJ, FACT, KUND, drawing unit table data along the unit length directionUnit table name of LABI: node IUnit table name of LABJ: node JFACT: display scale, default to 1Kund: 0 does not display an undeformed structure1 deformation and deformation overlap2 deformation contours and undeformed edges5 /post26 (time course postprocessing)U, nsol, NVAR, node, item, comp, nameIn the time course, the ordinal number of the node variable is defined in the processorNVAR: variable number (from 2 to NV (defined by numvar))Node: node numberItem compU, x, y, ZRot, x, y, ZU, ESOL, NVAR, ELEM, NODE, ITEM, COMP, and NAME store the results into variablesNVAR: variable number, more than 2ELEM: unit numberNODE: the node number of the unit determines which amount to store the unit and, if empty, gives the average valueITEM:COMP:NAME: 8 character variable name, defaults to ITEM plus COMPU, rforce, NVAR, node, item, comp, and name specify the node force data to be storedNvar: variable numberNode: node numberItem compF, x, y.zM, x, y, ZName: gives this variable a name, 8 charactersU, add, IR, IA, IB, IC, name, - - - -, facta, factb, factc Add the IA, IB, and IC variables to the IR variableIR, IA, IB, IC: variable numberThe name of the name: variableU, /grid, keyKey: "0" or "off" without network"1" or "on" XY network"2" or "X" is only X-ray"3" or "Y" has only y linesU, xvar, nN: "0" or "1" takes the X axis as the time axis"N" represents the X axis variable "n"""-1"?U, /axlab, axis, lab define the axis of the markAxis: "X" or "Y""The lab: flag can be up to 30 characters longU, plvar, NVAR, nvar2,...... Nvar10 draws the variable to be displayed (as a ordinate)U, prvar, nvar1,...... Nvar6 lists the variables to display6 PLOTCONTROL menu commandU, PBC, ilem,...... The key, min, Max, and ABS display symbols and values on the displayThe displacement constraint added by item: uRot corner constraintKey: 0 does not display symbols1 display symbols2 display symbols and valuesThe U, /SHOW, FNAME, EXT, VECT, and NCPL determine the graphicaldisplay of the device and other parametersFNAME: X11: screenFile name: each graphic will generate a series of graphic filesEach of the JPEG: graphics generates a series of JPEG graphics filesDescription: there is no need to use this command, graphics files need to be calculated and then output7 parametric design languageU, *do, par, ival, Fval, and inc define the beginning of a do loopPar: loop control variablesIval, Fval, Inc: start value, final value, step size (positive, negative)U *enddo defines the end of a do loopU, *if, val1, oper, val2, base: conditional statementsVal1 (val2:), the value to be compared (also characters, enclosed in quotes)Oper: logical operation (when the real number is compared, the error is 1e-10)EQ, NE, lt, GT, Le, Ge, ablt, abgtBase: behavior when the oper result is a logical truthLable: user defined line labelsStop: will jump out of ANASYSExit: jumps out of the current do loopCycle: jumps to the end of the current do loopThen: makes up the If-Then-Else structureNote: not allowed to jump out of, jump into a do, if loop to label sentence8 theoretical manualSolution of 1. equations: (1) direct solution; (2) iterative solution(1) direct solution: A. sparse matrix method and B. wave front methodA. sparse matrix method: accounting for large memory, but the number of operations less; by changing the order of stiffness matrix, so that non-zero elements minimumB. wavefront method: small memoryWavefront is the number of equations activated when no cell has been solved(2) iterative solution: JCG method, PCG method, ICCG methodJCG method: solvable real numbers, symmetric and unsymmetric matricesPCG method: efficient solution of various matrices (including morbid state), but only the real and symmetric matrixICCG: similar to JCG, but stronger2. strain density, equivalent strain, stress density, equivalent stress(1) strain density (strain, intensity);Strain densityAre the three principal strains(2) equivalent strainEffective Poisson's ratio: the user is set by the avprin command;0 (if not set)(3) stress density (stress, intensity);Stress density(4) equivalent stressEquivalent stress or if there is (elastic state)。
