Element Control Card

1-5 Element type number (NTYPE=2 )


6-10		  Maximum number of the present local node (NEN   ) 

11-15		 Number of stress/strain time histories (NSOUT )


16-20		      Body force load-time function number (LFBODY)


21-25		     Number of integration points (NINT  )


EQ.0, Ignore the element 

26-30		     Mass matrix type code (IMASS )


EQ.0, Consistent mass matrix  

EQ.1, Lumped mass matrix        

EQ.2, No mass matrix              

31-35		      Material model number  (NUMAT ) 

36-40		   Geometric nonlinear flag (NNFLAG) 

EQ.0, Deactivate geometric nonlinearity             

EQ.1, Activate geometric nonlinearity               

41-45		  Element stress/strain output flag (IOUTFL) 

EQ.0, Transformed stress at the integration points


EQ.1, Transformed strain at the integration points


EQ.2, Both stress and strain at the integration point


46-50		   Element system number  (ISYSTM) 

51-55 		Element type flag (ITFLAG)


EQ.1, Doubly curved shell element, 5 Ds.o.f per node, local rotations


EQ.2, Doubly curved shell element, 6 Ds.o.f per node, global rotations


EQ.3, Plane stress shell element    

EQ.4, Plane strain shell element     

EQ.5, Axisymmetric shell element, (revolution shell) 

GT.10, Force the fiber direction to be normal to the midplane 

GT.20, Force one fiber direction for the element normal to the midplane


56-60 		 Four digits code to indicate integration rules 

GT.0,   Gauss integration is used for stiffness matrix


LT.0,   Lobbato integration is used for stiffness matrix


Digit.1 The bending component rule           

Digit.2 The transverse shear component rule     

Digit.3 The membrane normal component rule     

Digit.4 The membrane shear component  rule,  ignored in 2-D shells


61-65		 Two  digits code to indicate integration rules 

GT.0,   Gauss integration is used for mass matrix


LT.0,   Lobbato integration is used for mass matrix


Digit.1 The mass matrix integration rule    

EQ.0, The full integration rule  

Digit.2 The thickness integration rule


66-70		 Tensionless elastic foundation code


EQ.0, Disable elastic foundation    

EQ.1, Enable elastic foundation, nonlinear damping


EQ.2, Enable elastic foundation, linear damping