ANSYS初始殘余應力賦值

目錄

• 1.建模
• 2.划分網格並分組
• 3.所有節點固定約束
• 4.施加初始殘余應力
• 5.結果

1.建模

建立有限元模型，采用SOLID185單元，模型尺寸0.050.050.02
材料為鋼

!程序頭
FINISH
/CLEAR
/FILENAME, RS
/PREP7

!設置平台的類型和材料   
ET,1,SOLID185    
MPTEMP,,,,,,,,    
MPTEMP,1,0    
MPDATA,EX,1,,210E9
MPDATA,PRXY,1,,0.33
MPDATA,DENS,1,,7850

!樣件尺寸
BLC4,0,0,0.05,0.05,0.02

2.划分網格並分組

!設置類型
TYPE,1
MAT,1

!划分網格
CM,_Y,LINE    
LSEL,S,LOC,X,0,0       
LSEL,R,LOC,Z,0,0       
CM,_Y1,LINE      
CMSEL,,_Y    
LESIZE,_Y1, , ,50, , , , ,1    
ALLSEL,ALL      
CM,_Y,LINE      
LSEL,S,LOC,Y,0,0       
LSEL,R,LOC,Z,0,0       
CM,_Y1,LINE    
CMSEL,,_Y       
LESIZE,_Y1, , ,50, , , , ,1    
ALLSEL,ALL      
CM,_Y,LINE      
LSEL,S,LOC,X,0,0       
LSEL,R,LOC,Y,0,0       
CM,_Y1,LINE    
CMSEL,,_Y       
LESIZE,_Y1, , ,20, , , , ,1    
ALLSEL,ALL      
MSHAPE,0,3D    
MSHKEY,1    
CM,_Y,VOLU      
VSEL, , , ,       1    
CM,_Y1,VOLU    
CHKMSH,'VOLU'       
CMSEL,S,_Y      
VMESH,_Y1       
CMDELE,_Y       
CMDELE,_Y1      
CMDELE,_Y2      
/UI,MESH,OFF    

!單元分組，按照層數，分成若5組
!第一層
ALLSEL,ALL  
NSEL,R,LOC,Z,0,0.004!位置
ESLN,R  
CM,L1,ELEM  !組名為L1
CMSEL,A,L1  

!第二層
ALLSEL,ALL  
NSEL,U,LOC,Z,0,0.004
NSEL,R,LOC,Z,0.004,0.008
ESLN,R  
CM,L2,ELEM  
CMSEL,A,L2

!第三層
ALLSEL,ALL  
NSEL,U,LOC,Z,0,0.008
NSEL,R,LOC,Z,0.008,0.012
ESLN,R  
CM,L3,ELEM  
CMSEL,A,L3

!第四層
ALLSEL,ALL  
NSEL,U,LOC,Z,0,0.012
NSEL,R,LOC,Z,0.012,0.016
ESLN,R  
CM,L4,ELEM  
CMSEL,A,L4

!第五層
ALLSEL,ALL  
NSEL,U,LOC,Z,0,0.016
NSEL,R,LOC,Z,0.016,0.02
ESLN,R  
CM,L5,ELEM  
CMSEL,A,L5

ALLSEL,ALL!選擇所有

3.所有節點固定約束

如果要查看賦值的應力是否正確，可以先把所有的節點都固定，然后求解觀察。
如果直接看賦值后的效果，則可忽略此過程

D,ALL,ALL,0

4.施加初始殘余應力

!初始應力，后面六位分別對應xx，yy，zz，xy，yz，xz
CMSEL,S,L1!選擇第一層
INISTATE,DEFI,,,,,100,200,300,400,500,600!殘余應力賦值
ALLSEL,ALL!選擇所有

5.結果