工程力学软件方法-ANSYS命令3加载.ppt

1、解题处理器,/SOLU,命令1,负载定义,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2,定义集中力,F,NODE,Lab,VALUE,VALUE2,NEND,NINC,NODE:节点号码 Lab: 外力的形式 Lab=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 VA

2、LUE:外力的大小 NODE,NEND,NINC: 选取节点的范围,命令3,/FILNAME,EX111 /UNITS,SI /TITLE,PLANE NODES /PREP7 ET,1, SHELL63 MP,EX,1,207e9 MP,NUXY,1,0.3 R,1,1 N,1,0,0,0 N,5,5,0,0 FILL,1,5 NGEN,6,10,1,5,1,1,2,0 E,1,11,12,2 F,2,FX,1,定义节点自由度约束,D,NODE,Lab,VALUE,VALUE2,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 La

3、b=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4,/FILNAME,EX111 /UNITS,SI /TITLE,PLANE NODES /PREP7 ET,1, SHELL63 MP,EX,1,207e9 MP,NUXY,1,0.3 R,1,1 N,1,0,0,0 N,5,5,0,0 FILL,1,5 NGEN,6,10,1,5,1,1,2,0 E,1,11,12,2 D,1,ux,0,2,1,定义梁单元分布力,SFBEAM,ELEM,LKEY,Lab,VALI,VAL

4、J,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5,/FILNAME,EX111 /UNITS,SI /TITLE,BEAM NODES /PREP7 ET,1,BEAM3 MP,EX,1,207e9 R,1,1e-4,2.083E-10,0.005 N,1,0,0,0 N,5,5,0,0 FILL,1,5 NGEN,6,10,1,5,1,1,2,0 E,1,2 EGEN,4,1,1,1,1 SFBEAM,4,1,PRES,-1,定义分布力,SFE,ELEM,

5、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6,/FILNAME,EX111 /UNITS,SI /TITLE,PLANE NODES /PREP7 ET,1, SHELL63 MP,EX,1,207e9 MP,NUXY,1,0.3 R,1,1 N,1,0,0,0 N,5,5,0,0 FILL,1,5 NGEN,6,10,1,5,1,1,2,0 E,1,11,12,2 SFE,1,1,PRES

6、,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7,/FILNAME,EX111 /UNITS,SI /TITLE,PLANE NODES /PREP7 ET,1, SHELL63 MP,EX,1,207e9 MP,NUXY,1,0.3 R,1,1 N,1,0,0,0 N,5,5,0,0 FILL,1,5 NGEN,6,10,1,5,1,1,2,0 E,1,11,12,2 SF,ALL,PRES,10,NSEL,Type,Item,Comp,V

7、MIN,VMAX,VINC,KABS,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8,OUTPR,Item,FREQ,Cname,Item: 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

8、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9,SOLVE,求解,负载加完后,可执行该命令完成解题.,命令10,例题：,FINISH /CLEAR /FILNAME,EX12 /UNITS,SI /TITLE,BEAM /PREP7 N,1,0,0,0 N,3,0.6,0,0 FILL,1,3 NPLOT NPLOT1 NLIST ET,1, BEAM3 MP,EX,1,207e9 MP,NUXY,1,0.3 R,1,0.001,0.020833,0.05 E,1, 2 E,2,3 EPLOT ELIST,FINISH /SOLU ANTYPE,STATIC OUTPR,BAS

9、IC,ALL D,1,UX,0,UY,ROTZ D,3,UY,0 SFBEAM,1,1,PRES,0,300 SFBEAM,2,1,PRES,300,600 F,2,FY,-200 SOLVE FINISH /POST1 PLDISP,2 PRDISP ETABLE,IMOMENT,SMISC,6 ETABLE,JMOMENT,SMISC,12 ETABLE,ISHEAR,SMISC,2 ETABLE,JSHEAR,SMISC,8 PRETAB,图示超静定梁，左端固定，右端铰支,/FILNAME,EX111 /UNITS,SI /TITLE,BEAM NODES /PREP7 ET,1,BEA

10、M3 MP,EX,1,207e9 R,1,1e-4,2.083E-10,0.005 N,1,0,0,0 N,5,5,0,0 FILL,1,5 NGEN,6,10,1,5,1,1,2,0 E,1,2 EGEN,4,1,1,1,1 SFBEAM,4,1,PRES,-1,ETABLE,IMOMENT,SMISC,6 ETABLE,JMOMENT,SMISC,12 ETABLE,ISHEAR,SMISC,2 ETABLE,JSHEAR,SMISC,8 PRETAB /TITLE,SHEAR FORCE DIAGAM PLLS,ISHEAR,JSHEAR /TITLE,SHEAR FORCE DIAGAM PLLS,