Engineering Solutions

ANSYS to Nastran Conversion

ANSYS to Nastran Conversion

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ANSYS to Nastran Conversion

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Use the Conversion tool to convert an ANSYS file to a Nastran file.

1.Load the ANSYS user profile.
2.Import an ANSYS model.
3.To run the Conversion macro, from the menu bar, click Tools > Convert > ANSYS > To Nastran. The Conversion tab opens.
4.Click Convert. After the conversion, the Nastran user profile automatically loads.

 

Conversion Notes


All ANSYS solid and shell elements that are currently supported are included in the conversion tool.
Material properties – Thermal Conductivity, specific heat, thermal expansion co-efficient can be now converted.
Nonlinear material data and temperature dependent materials defined through TB tables are converted to TABLESx cards inside a MATS1.
2D and 3D Orthotropic properties of E, NU, and Alpha can be converted.
If components or properties do not have a material associated to them on conversion, then MID = 1 will be associated.
On conversion, a model will be cleaned by removing unused sets, ET types, and contact elements.
COMBIN14 elements are now converted to CELAS1 if key option2 for COMBIN14 in ANSYS is defined. If key option 3 is defined, it is converted to 3 coincident CELAS (1 per DOF).
ANSYS BEAM188 converts to CBEAM now [please note section properties defined using SECDATA card in ANSYS are not yet converted].
Forces, Moments, Pressures, Temperatures and Constraints are automatically converted. MODOPT (control cards) will be mapped to EIRGL. ACEL (Control Cards) will be converted to GRAV.
BEAM44 element type end release options defined in KEYOPTIONS 7 and 8 are converted to values in fields PA and PB respectively in the CBEAM card.
BEAM188 section properties are converted from the BeamSection Collector data and not from the EtType Sensor (this is how the BEAM188 section data is modeled in the HyperMesh ANSYS User Profile).
oSECTYPE with TYPE equal to BEAM and SUBTYPEs equal to RECT, CSOLID, CTUBE, I, L, T convert to a PBEAML property with corresponding standard section definition.
oSECTYPE with TYPE equal to BEAM and SUBTYPEs equal to ASEC, QUAD, CHAN, Z, HATS, HREC convert to a PBEAM property with corresponding cross section property values.
MPC184 converts to either a RBE2 rigid element or a CBUSH/PBUSH bushing element depending on the KEYOPT(1) value, as follows:
oKEYOPT(1) equal to 0 converts to RBE2 with constraint DOFs equal to [123]
oKEYOPT(1) equal to 1 converts to RBE2 with constraint DOFs equal to [123456]
oKEYOPT(1) equal to 6 converts to CBUSH + PBUSH
K4 equals <blank>/0.0
K1, K2, K3, K5, K6 equals 1e10
oKEYOPT(1) equal to 8 converts to CBUSH + PBUSH
K1, K4, K5, K6 equals <blank>/0.0
K2, K3 equals 1E10
oKEYOPT(1) equal to 9 converts to CBUSH + PBUSH
K2, K3, K4, K5, K6 equals <blank>/0.0
K1 equals 1E10
oKEYOPT(1) equal to 10 converts to CBUSH + PBUSH
K1 equals <blank>/0.0
K2, K3, K4, K5, K6 equals 1E10
oKEYOPT(1) equal to 11 converts to CBUSH + PBUSH
K1, K4 equals <blank>/0.0
K2, K3, K5, K6 equals 1E10
oKEYOPT(1) equal to 12 converts to CBUSH + PBUSH
K2, K3, K4 equals <blank>/0.0
K1, K5, K6 equals 1E10
oKEYOPT(1) equal to 13 converts to RBE2 with constraint DOFs equal to [123456]
oKEYOPT(1) equal to 14 converts to RBE2 with constraint DOFs equal to [456]
oKEYOPT(1) equal to 15 converts to RBE2 with constraint DOFs equal to [123]

 

Assumptions

The Conversion tool will only convert entities imported by the ANSYS FE input reader.
For shell elements, constant thickness parts are assumed.
Analysis types assumed: Static – gravity, forces, pressures and constraints; Modal.

 

Conversion Mapping


Elements

HM config, ANSYS type

HM config, Nastran type

mass, CONTAC175

sets, GRID

mass, MASS21

mass, CONM2

rigid, CP

equation, MPC

rigid, CERIG

rbe2, RBE2

rigidlink, CP

equation, MPC

rigidlink, CERIG

equation, MPC

rbe3/RBE3

rbe3, RBE3

spring, CONBIN14

spring, CBUSH

bar2, BEAM44

bar2, CBEAM

bar2, BEAM188

bar2, CBEAM

bar2, PIPE16

bar2, CBEAM

bar2, BEAM4

bar2, CBEAM

rod, LINK8

rod, CROD

rod, MPC184

rbe2,RBE2 / spring,CBUSH

tria3, PLANE182

tria3, CTRIA3

tria3, SHELL181

tria3, CTRIA3

tria3, SHELL163

tria3, CTRIA3

tria3, PLANE162

tria3, CTRIA3

tria3, SHELL157

tria3, CTRIA3

tria3, SHELL143

tria3, CTRIA3

tria3, SHELL131

tria3, CTRIA3

tria3, PLANE75

tria3, CTRIA3

tria3, PLANE67

tria3, CTRIA3

tria3, SHELL63

tria3, CTRIA3

tria3, SHELL57

tria3, CTRIA3

tria3, PLANE55

tria3, CTRIA3

tria3, SHELL43

tria3, CTRIA3

tria3, PLANE42

tria3, CTRIA3

tria3, SHELL41

tria3, CTRIA3

tria3, PLANE25

tria3, CTRIA3

tria3, PLANE13

tria3, CTRIA3

quad4, PLANE182

quad4, CQUAD4

quad4, SHELL181

quad4, CQUAD4

quad4, SEHLL163

quad4, CQUAD4

quad4, PLANE162

quad4, CQUAD4

quad4, SHELL157

quad4, CQUAD4

quad4, SHELL143

quad4, CQUAD4

quad4, SHELL131

quad4, CQUAD4

quad4, PLANE75

quad4, CQUAD4

quad4, PLANE67

quad4, CQUAD4

quad4, SHELL63

quad4, CQUAD4

quad4, SHELL57

quad4, CQUAD4

quad4, PLANE55

quad4, CQUAD4

quad4, SHELL43

quad4, CQUAD4

quad4, PLANE42

quad4, CQUAD4

quad4, SHELL41

quad4, CQUAD4

quad4, SHELL28

quad4, CQUAD4

quad4, PLANE25

quad4, CQUAD4

quad4, PLANE13

quad4, CQUAD4

tetra4, SOLID185

tetra4, CTETRA

tetra4, SOLID164

tetra4, CTETRA

tetra4, SOLID97

tetra4, CTETRA

tetra4, SOLID96

tetra4, CTETRA

tetra4, SOLID73

tetra4, CTETRA

tetra4, SOLID72

tetra4, CTETRA

tetra4, SOLID70

tetra4, CTETRA

tetra4, SOLID69

tetra4, CTETRA

tetra4, SOLID64

tetra4, CTETRA

tetra4, SOLID62

tetra4, CTETRA

tetra4, SOLID46

tetra4, CTETRA

tetra4, SOLID45

tetra4, CTETRA

tetra4, SOLID285

tetra4, CTETRA

penta6, SOLSH190

penta6, CPENTA

penta6, SOLID185

penta6, CPENTA

penta6, SOLID164

penta6, CPENTA

penta6, VISCO107

penta6, CPENTA

penta6, SOLID97

penta6, CPENTA

penta6, SOLID96

penta6, CPENTA

penta6, SOLID73

penta6, CPENTA

penta6, SOLID70

penta6, CPENTA

penta6, SOLID69

penta6, CPENTA

penta6, SOLID64

penta6, CPENTA

penta6, SOLID62

penta6, CPENTA

penta6, SOLID46

penta6, CPENTA

penta6, SOLID45

penta6, CPENTA

penta6, SOLID5

penta6, CPENTA

hex8, SOLSH190

hex8, CHEXA

hex8, SOLID185

hex8, CHEXA

hex8, SOLID164

hex8, CHEXA

hex8, SOLID97

hex8, CHEXA

hex8, SOLID96

hex8, CHEXA

hex8, SOLID73

hex8, CHEXA

hex8, SOLID70

hex8, CHEXA

hex8, SOLID69

hex8, CHEXA

hex8, SOLID64

hex8, CHEXA

hex8, SOLID62

hex8, CHEXA

hex8, SOLID46

hex8, CHEXA

hex8, SOLID45

hex8, CHEXA

hex8, SOLID5_1

hex8, CHEXA

tria6, PLANE183

tria6, CTRIA6

tria6, SHELL150

tria6, CTRIA6

tria6, PLANE145

tria6, CTRIA6

tria6, SHELL132

tria6, CTRIA6

tria6, SHELL281

tria6, CTRIA6

tria6, PLANE121

tria6, CTRIA6

tria6, SHELL99

tria6, CTRIA6

tria6, SHELL93

tria6, CTRIA6

tria6, SHELL91

tria6, CTRIA6

tria6, PLANE83

tria6, CTRIA6

tria6, PLANE82

tria6, CTRIA6

tria6, PLANE78

tria6, CTRIA6

tria6, PLANE77

tria6, CTRIA6

tria6, PLANE53

tria6, CTRIA6

tria6, PLANE35

tria6, CTRIA6

tria6, PLANE2

tria6, CTRIA6

quad8, PLANE183

quad8, CQUAD8

quad8, SHELL150

quad8, CQUAD8

quad8, PLANE145

quad8, CQUAD8

quad8, SHELL132

quad8, CQUAD8

quad8, SHELL281

quad8, CQUAD8

quad8, PLANE121

quad8, CQUAD8

quad8, SHELL99

quad8, CQUAD8

quad8, SHELL93

quad8, CQUAD8

quad8, SHELL91

quad8, CQUAD8

quad8, PLANE83

quad8, CQUAD8

quad8, PLANE82

quad8, CQUAD8

quad8, PLANE78

quad8, CQUAD8

quad8, PLANE77

quad8, CQUAD8

quad8, PLANE53

quad8, CQUAD8

tetra10, SOLID191

tetra10, CTETRA

tetra10, SOLID187

tetra10, CTETRA

tetra10, SOLID186

tetra10, CTETRA

tetra10, SOLID148

tetra10, CTETRA

tetra10, SOLID117

tetra10, CTETRA

tetra10, SOLID98

tetra10, CTETRA

tetra10, SOLID95

tetra10, CTETRA

tetra10, SOLID92

tetra10, CTETRA

tetra10, SOLID90

tetra10, CTETRA

tetra10, SOLID87

tetra10, CTETRA

penta15, SOLID191

penta15, CPENTA

penta15, SOLID186

penta15, CPENTA

penta15, SOLID147

penta15, CPENTA

penta15, SOLID117

penta15, CPENTA

penta15, SOLID95

penta15, CPENTA

penta15, SOLID90

penta15, CPENTA

hex20, SOLID191

hex20, CHEXA

hex20, SOLID186

hex20, CHEXA

hex20, SOLID147

hex20, CHEXA

hex20, SOLID117

hex20, CHEXA

hex20, SOLID95

hex20, CHEXA

hex20, SOLID90

hex20, CHEXA

 

Properties

ANSYS type

Nastran type

LINK8P

LINK8P

BEAM4P

PBEAM

BEAM44P

PBEAM

SOLID45P

PSOLID

SOLID46P

PSOLID

SOLID70P

PSOLID

SOLID95P

PSOLID

SOLID97P

PSOLID

SOLID117P

PSOLID

SOLID185P

PSOLID

SOLID191P

PSOLID

SHELL28P

PSHELL

SHELL41P

PSHELL

SHELL43P

PSHELL

SHELL57P

PSHELL

SHELL63P

PSHELL

SHELL91P

PCOMP

SHELL93P

PSHELL

SHELL99P

PCOMP

SHELL131P

PCOMP

SHELL132P

PCOMP

SHELL143P

PSHELL

SHELL150P

PSHELL

SHELL157P

PSHELL

SHELL181P

PSHELL

SHELL281P

PSHELL

PLANE2P

PSHELL

PLANE42P

PSHELL

PLANE82P

PSHELL

PLANE145P

PSHELL

PLANE183P

PSHELL

PIPE16P

PBEAML

COMBIN14P

PBUSH

MASS21P

CONM2

 

Materials

ANSYS type

Nastran type

MP

MAT1

MPDATA

MAT1

 

Loads

HM config,  ANSYS type

HM config,  Nastran type

temperature, BF_TEMP

temperature, TEMP

temperature, IC_TEMP

temperature, TEMP

temperature, D_TEMP

temperature, TEMP

pressure, HFLUX

pressure, PLOAD2

pressure, ConvBulkTe

pressure, PLOAD

pressure, PRESSURE

pressure, PLOAD4

constraint, D_VOLT

constraint, ASET1

constraint, IC_CONSTRNT

constraint, SPCD

constraint, D_CONSTRAIN

constraint, SPC

moment, FORCE2

moment, MOMENT

force, FORCE

force, FORCE

 

Sets

HM config,  ANSYS type

HM config,  Nastran type

set

set

 

Cards

ANSYS type

Nastran type

ACEL

GRAV

 

Sensors

ANSYS type

Nastran type

Link8

PROD

BEAM4

PBEAM

BEAM44

PBEAM

BEAM188

PBEAML

SOLID5

PSOLID

SOLID45

PSOLID

SOLID46

PSOLID

SOLID62

PSOLID

SOLID64

PSOLID

SOLID69

PSOLID

SOLID70

PSOLID

SOLID87

PSOLID

SOLID90

PSOLID

SOLID92

PSOLID

SOLID95

PSOLID

SOLID96

PSOLID

SOLID97

PSOLID

SOLID98

PSOLID

SOLID117

PSOLID

SOLID147

PSOLID

SOLID148

PSOLID

SOLID164

PSOLID

SOLID185

PSOLID

SOLID186

PSOLID

SOLID187

PSOLID

SOLID191

PSOLID

SOLSH190

PSOLID

SOLID226

PSOLID

SOLID227

PSOLID

SOLID285

PSOLID

SHELL28

PSHELL

SHELL41

PSHELL

SHELL43

PSHELL

SHELL51

PSHELL

SHELL57

PSHELL

SHELL63

PSHELL

SHELL91

PCOMP

SHELL93

PSHELL

SHELL99

PCOMP

SHELL131

PCOMP

SHELL132

PCOMP

SHELL143

PSHELL

SHELL150

PSHELL

SHELL157

PSHELL

SHELL181

PCOMP OR PSHELL

SHELL281

PCOMP OR PSHELL

PLANE2

PSHELL

PLANE13

PSHELL

PLANE25

PSHELL

PLANE35

PSHELL

PLANE42

PSHELL

PLANE67

PSHELL

PLANE75

PSHELL

PLANE77

PSHELL

PLANE78

PSHELL

PLANE82

PSHELL

PLANE83

PSHELL

PLANE121

PSHELL

PLANE145

PSHELL

PLANE162

PSHELL

PLANE183

PSHELL

PLANE223

PSHELL

PIPE16

PBEAM

COMBIN14

PBUSH

MASS21

CONM2

MPC184

PBUSH

 

See Also:

ANSYS Conversion Tools