Appendix

The table below contains the list of designable fields on Nastran Cards that Attune supports. These will be able to be used to create design variables on the Configuration Form and updated automatically in the Current Design Variables to Input command in the Export menu on the Attune main form.

Any designable field is supported by the Attune optimization routines as long as Nastran does - provided that those design variables are created by the user. They also will not be able to be used to update the final design to bulk. The intermediate Current Design Variables to Input iterations will still work, as these modify the DESVAR cards and not the properties themselves. Please notify Attune support of any designable property you encounter that is not supported by Attune, so adding it can be investigated.

Nastran Card	Designable Field	Field Description
CONM2	M	Mass
CONM2	Iij	Mass moment of inertia
CELAS2	K	Stiffness of scalar spring
PBAR	A	Area of bar cross section
PBAR	I1	Area moment of inertia for bending in plane 1
PBAR	I2	Area moment of inertia for bending in plane 2
PBAR	J	Torsional stiffness parameter
PBAR	NSM	Nonstructural mass
PBAR	K1	Area factor for shear (plane 1)
PBAR	K2	Area factor for shear (plane 2)
PBARL	DIMi	Dimensions for cross section
PBARL	NSM	Nonstructural mass
PBEAM	A	Area of beam cross section
PBEAM	I1	Area moment of inertia for bending in plane 1
PBEAM	I2	Area moment of inertia for bending in plane 2
PBEAM	I12	Area product of inertia
PBEAM	J	Torsional stiffness parameter
PBEAM	NSM	Nonstructural mass
PBEAML	DIMi	Dimensions for cross section
PBEAML	NSM	Nonstructural mass
PBUSH	Ki	Nominal stiffness values in directions 1-6
PCOMP	Ti	Thickness of individual plies
PCOMP	THETAi	Angle of individual plies
PCOMP	NSM	Nonstructural mass
PELAS	K1	Elastic property value
PROD	A	Area of the rod
PROD	J	Torsional stiffness parameter
PROD	NSM	Nonstructural mass
PSHELL	T	Shell thickness
PSHELL	12I/T**3	Bending moment of inertia ratio
PSHELL	TS/T	Transverse shear thickness ratio
PSHELL	NSM	Nonstructural mass
PSHEAR	T	Thickness of shear panel
PSHEAR	NSM	Nonstructural mass
PTUBE	OD	Outer diameter of tube
PTUBE	OD2	Diameter of tube at second grid point
PTUBE	T	Thickness of tube
PTUBE	NSM	Nonstructural mass
MAT1	E	Young’s modulus
MAT1	G	Shear modulus
MAT1	NU	Poisson’s ratio
MAT1	RHO	Mass density
MAT1	A	Thermal expansion coefficient
MAT2	Gij	Material property matrix
MAT2	RHO	Mass density
MAT2	Ai	Thermal expansion coefficient vector
MAT4	K	Thermal conductivity
MAT4	CP	Heat capacity per unit mass
MAT4	RHO	Mass density
MAT4	H	Free convection heat transfer coefficient
MAT4	m	Dynamic viscosity
MAT8	E1	Modulus of elasticity in longitudinal direction
MAT8	E2	Modulus of elasticity in lateral direction
MAT8	NU12	Poisson’s ratio
MAT8	G12	In-plane shear modulus
MAT8	G1Z	Transverse shear modulus for shear in 1-Z plane
MAT8	G2Z	Transverse shear modulus for shear in 2-Z plane
MAT8	RHO	Mass density
MAT8	A1	Thermal expansion coefficient in 1 direction
MAT8	A2	Thermal expansion coefficient in 2 direction
MAT9	Cij	Elements of material property mat
MAT9	RHO	Mass density
MAT9	Ai	Thermal expansion coefficients
MAT11	E1	Modulus of elasticity in longitudinal direction
MAT11	E2	Modulus of elasticity in lateral direction
MAT11	E3	Modulus of elasticity in ply layup direction
MAT11	NU12	Poisson’s ratio
MAT11	NU13	Poisson’s ratio
MAT11	NU23	Poisson’s ratio
MAT11	G12	Shear modulus in plane 1-2
MAT11	G13	Transverse shear modulus in shear in 1-3 plane
MAT11	G23	Transverse shear modulus in shear in 1-4 plane
MAT11	RHO	Mass density
MAT11	A1	Thermal expansion coefficient in longitudinal direction
MAT11	A2	Thermal expansion coefficient in lateral direction
MAT11	A3	Thermal expansion coefficient in thickness direction