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1、工程力学软件方法ANSYS命令3加载 Still waters run deep.流静水深流静水深,人静心深人静心深 Where there is life,there is hope。有生命必有希望。有生命必有希望声明分析类型ANTYPE,Antype,Status 系统默认为静态分析.Antype=STATIC 0 静态分析 =BUCKLE 1 屈曲分析 =MODAL 2 振动模态分析 =HARMIC 3 调和外力动力系统分析 =TRANS 4 瞬时动力系统分析命令命令2定义集中力F,NODE,Lab,VALUE,VALUE2,NEND,NINC NODE:节点号码 Lab:外力的形式 L
2、ab=FX,FY,FZ,MX,XY,XZ(结构力学的力,力矩方向),=HEAT(热学的热流量)=AMP,CHRG(电学的电流,电荷)=FLUX VALUE:外力的大小 NODE,NEND,NINC:选取节点的范围命令命令3/FILNAME,EX111/UNITS,SI/TITLE,PLANE NODES/PREP7ET,1,SHELL63MP,EX,1,207e9MP,NUXY,1,0.3R,1,1N,1,0,0,0N,5,5,0,0FILL,1,5NGEN,6,10,1,5,1,1,2,0E,1,11,12,2F,2,FX,1定义节点自由度约束D,NODE,Lab,VALUE,VALUE2,
3、NEND,NINC,Lab2,Lab6 NODE:节点号码 Lab:相对节点的每一个节点受自由度约束的形式 Lab=UX,UY,UZ,ROTX,ROTY,ROTZ(结构力学量)=TEMP(热学量)VALUE:约束值的大小 NODE,NEND,NINC:选取节点的范围命令命令4/FILNAME,EX111/UNITS,SI/TITLE,PLANE NODES/PREP7ET,1,SHELL63MP,EX,1,207e9MP,NUXY,1,0.3R,1,1N,1,0,0,0N,5,5,0,0FILL,1,5NGEN,6,10,1,5,1,1,2,0E,1,11,12,2D,1,ux,0,2,1定义
4、梁单元分布力SFBEAM,ELEM,LKEY,Lab,VALI,VALJ,VAL2I,VAL2J ELEM:单元号码 LKEY:建立单元后,梁单元的4个面.该参数是面号 Lab=PRES(表面分布压力)VALI,VALJ:在I点及J点分布力的值 命令命令5/FILNAME,EX111/UNITS,SI/TITLE,BEAM NODES/PREP7ET,1,BEAM3MP,EX,1,207e9R,1,1e-4,2.083E-10,0.005N,1,0,0,0N,5,5,0,0FILL,1,5NGEN,6,10,1,5,1,1,2,0E,1,2EGEN,4,1,1,1,1SFBEAM,4,1,PR
5、ES,-1定义分布力SFE,ELEM,LKEY,Lab,KVAL,VAL1,VAL2,VAL3,VAL4 ELEM:单元号码 LKEY:建立单元后,依节点顺序,平面单元四个边,该参数是边号 Lab=PRES(表面分布压力)VAL1,VAL4:相对应作用于单元边及面上节点的值.命令命令6/FILNAME,EX111/UNITS,SI/TITLE,PLANE NODES/PREP7ET,1,SHELL63MP,EX,1,207e9MP,NUXY,1,0.3R,1,1N,1,0,0,0N,5,5,0,0FILL,1,5NGEN,6,10,1,5,1,1,2,0E,1,11,12,2SFE,1,1,P
6、RES,10,20定义节点间分布力SF,Nlist,Lab,VALUE,VALUE2 Nlist:分布力作用的边或面上的所有节点.Lab=PRES(表面分布压力)VALUE:作用分布力的值.命令命令7/FILNAME,EX111/UNITS,SI/TITLE,PLANE NODES/PREP7ET,1,SHELL63MP,EX,1,207e9MP,NUXY,1,0.3R,1,1N,1,0,0,0N,5,5,0,0FILL,1,5NGEN,6,10,1,5,1,1,2,0E,1,11,12,2SF,ALL,PRES,10NSEL,Type,Item,Comp,VMIN,VMAX,VINC,KAB
7、S节点选择Type:选择方式Type=S 选择一组节点为节点 =R 在现有节点中,再选择某些节点 =A 再选择某些节点,加入现有节点中 =U 在现有节点中,排除某些节点 =ALL 选择全节点为节点Item:资料卷标Item=NODE 用节点号码选取 =LOC 用节点坐标选取Comp:资料卷标分量Comp=无 =X(Y,Z)(表示节点X(Y,Z)坐标为准,当Item=LOC命令命令8OUTPR,Item,FREQ,CnameItem:欲选择结果的内容Item=ALL 所有结果 NSOL 节点自由度结果 BASIC 系统默认 FREQ:负载的次数控制分析后的结果是否显示于输出窗口中结果输出命令命令
8、9SOLVE求解负载加完后,可执行该命令完成解题.命令命令10例题：FINISH/CLEAR/FILNAME,EX12/UNITS,SI/TITLE,BEAM/PREP7N,1,0,0,0N,3,0.6,0,0FILL,1,3NPLOTNPLOT1NLISTET,1,BEAM3MP,EX,1,207e9MP,NUXY,1,0.3R,1,0.001,0.020833,0.05E,1,2E,2,3EPLOTELISTFINISH/SOLUANTYPE,STATICOUTPR,BASIC,ALLD,1,UX,0,UY,ROTZD,3,UY,0SFBEAM,1,1,PRES,0,300SFBEAM,2
9、,1,PRES,300,600F,2,FY,-200SOLVEFINISH/POST1PLDISP,2PRDISPETABLE,IMOMENT,SMISC,6ETABLE,JMOMENT,SMISC,12ETABLE,ISHEAR,SMISC,2ETABLE,JSHEAR,SMISC,8PRETAB图示超静定梁，左端固定，右端铰支/FILNAME,EX111/UNITS,SI/TITLE,BEAM NODES/PREP7ET,1,BEAM3MP,EX,1,207e9R,1,1e-4,2.083E-10,0.005N,1,0,0,0N,5,5,0,0FILL,1,5NGEN,6,10,1,5,1
10、,1,2,0E,1,2EGEN,4,1,1,1,1SFBEAM,4,1,PRES,-1ETABLE,IMOMENT,SMISC,6ETABLE,JMOMENT,SMISC,12ETABLE,ISHEAR,SMISC,2ETABLE,JSHEAR,SMISC,8PRETAB/TITLE,SHEAR FORCE DIAGAMPLLS,ISHEAR,JSHEAR/TITLE,SHEAR FORCE DIAGAMPLLS,IMOMENT,JMOMENTFINISH/SOLUANTYPE,STATICOUTPR,BASIC,ALLD,1,UX,0,UY,ROTZD,3,UY,0F,2,FX,200SOLVEFINISH/POST1PLDISP,2PRDISPETABLE,IMOMENT,U,XPRETAB