axisymmetric Module

All axisymmetric shell elements are defined in this file. This includes:

• AXIC
• AXIF
• CCONEAX
• PCONEAX
• POINTAX
• RINGFL
• RINGAX
• PRESAX

class pyNastran.bdf.cards.axisymmetric.axisymmetric.AXIC(nharmonics, comment='')

Bases: pyNastran.bdf.cards.base_card.BaseCard

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a AXIC card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

raw_fields(self)

type = 'AXIC'

write_card(self, size=8, is_double=False)

Writes the card with the specified width and precision

Parameters:

size : int (default=8)

size of the field; {8, 16}

is_double : bool (default=False)

is this card double precision

Returns:

msg : str

the string representation of the card

class pyNastran.bdf.cards.axisymmetric.axisymmetric.AXIF(cid, g, drho, db, no_sym, f, n, comment='')

Bases: pyNastran.bdf.cards.base_card.BaseCard

AXIF CID G DRHO DB NOSYM F

N1 N2 N3 N4 N5 etc.

cid : int

Fluid coordinate system identification number. (Integer > 0)

G : float

Value of gravity for fluid elements in the axial direction. (Real)

drho : float

Default mass density for fluid elements. (Real > 0.0 or blank)

db : float

Default bulk modulus for fluid elements.

no_sym : str

Request for nonsymmetric (sine) terms of series. {YES, NO}

F : str; default=None

Flag specifying harmonics. (Blank if harmonic is specified, or Character: ‘NONE’)

Ni : List[int]

Harmonic numbers for the solution, represented by an increasing sequence of integers. On continuation entries, without the ‘THRU’ option, blank fields are ignored. ‘THRU’ implies all numbers including upper and lower harmonics. (0 < Integer < 100, or Character: ‘THRU’, ‘STEP’ or blank)

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a AXIF card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

raw_fields(self)

type = 'AXIF'

write_card(self, size=8, is_double=False)

Writes the card with the specified width and precision

Parameters:

size : int (default=8)

size of the field; {8, 16}

is_double : bool (default=False)

is this card double precision

Returns:

msg : str

the string representation of the card

class pyNastran.bdf.cards.axisymmetric.axisymmetric.CCONEAX(eid, pid, rings, comment='')

Bases: pyNastran.bdf.cards.base_card.Element

1	2	3	4	5
CCONEAX	EID	PID	N1	N2

Creates a CCONEAX card

Parameters:

eid : int

element id

pid : int

property id (PCONEAX)

nids : List[int, int]

node ids

comment : str; default=’‘

a comment for the card

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a CCONEAX card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

cross_reference(self, model)

node_ids

nodes

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

ring_ids

safe_cross_reference(self, model, xref_errors)

type = 'CCONEAX'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

Writes the card with the specified width and precision

Parameters:

size : int (default=8)

size of the field; {8, 16}

is_double : bool (default=False)

is this card double precision

Returns:

msg : str

the string representation of the card

class pyNastran.bdf.cards.axisymmetric.axisymmetric.PCONEAX(pid, mid1, t1=None, mid2=0, i=None, mid3=None, t2=None, nsm=0.0, z1=None, z2=None, phi=None, comment='')

Bases: pyNastran.bdf.cards.base_card.Property

1	2	3	4	5	6	7	8	9
PCONEAX	ID	MID1	T1	MID2	I	MID3	T2	NSM
	Z1	Z2	PHIl	PHI2	PHI3	PHI4	PHI5	PHI6
	PHI7	PHI8	PHI9	PHI10	PHI11	PHI12	PHI13	PHI14
PCONEAX	2	4	1.0	6	16.3	8	2.1	0.5
	0.001	-0.002	23.6	42.9

Creates a PCONEAX

Parameters:

pid : int

PCONEAX property id for a CCONEAX.

mid1 : int

Membrane material id

mid2 : int

bending material id

mid3 : int

transverse shear material id

t1 : float

Membrane thickness. (Real > 0.0 if MID1 = 0)

t2 : float

Transverse shear thickness. (Real > 0.0 if MID3 = 0)

I : float

Moment of inertia per unit width.

nsm : float

Nonstructural mass per unit area.

z1, z2 : float

Fiber distances from the middle surface for stress recovery.

phi : List[float]

Azimuthal coordinates (in degrees) for stress recovery.

comment : str; default=’‘

a comment for the card

Mid1(self)

Mid2(self)

Mid3(self)

Mids(self)

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a PCONEAX card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

cross_reference(self, model)

Cross links the card so referenced cards can be extracted directly

Parameters:

model : BDF()

the BDF object

mid_ref

raw_fields(self)

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

type = 'PCONEAX'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

Writes the card with the specified width and precision

Parameters:

size : int (default=8)

size of the field; {8, 16}

is_double : bool (default=False)

is this card double precision

Returns:

msg : str

the string representation of the card

class pyNastran.bdf.cards.axisymmetric.axisymmetric.POINTAX(nid, ringax, phi, comment='')

Bases: pyNastran.bdf.cards.base_card.BaseCard

1	2	3	4
POINTAX	ID	RID	PHI
POINTAX	2	3	30.0

Creates a POINTAX card

Parameters:

nid : int

Point identification number.

ringax : int

Identification number of a RINGAX entry.

phi : float

Azimuthal angle in degrees.

comment : str; default=’‘

a comment for the card

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a RINGAX card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

raw_fields(self)

type = 'POINTAX'

write_card(self, size=8, is_double=False)

Writes the card with the specified width and precision

Parameters:

size : int (default=8)

size of the field; {8, 16}

is_double : bool (default=False)

is this card double precision

Returns:

msg : str

the string representation of the card

class pyNastran.bdf.cards.axisymmetric.axisymmetric.PRESAX(sid, pressure, rid1, rid2, phi1=0.0, phi2=360.0, comment='')

Bases: pyNastran.bdf.cards.base_card.BaseCard

1	2	3	4	5	6	7
PRESAX	SID	P	RID1	RID2	PHI1	PHI2
PRESAX	3	7.92	4	3	20.6	31.4
PRESAX	300	.1	2	1	-90.	+90.

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a PRESAX card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

cross_reference(self, model)

raw_fields(self)

type = 'PRESAX'

write_card(self, size=8, is_double=False)

Writes the card with the specified width and precision

Parameters:

size : int (default=8)

size of the field; {8, 16}

is_double : bool (default=False)

is this card double precision

Returns:

msg : str

the string representation of the card

class pyNastran.bdf.cards.axisymmetric.axisymmetric.RINGAX(nid, R, z, ps=None, comment='')

Bases: pyNastran.bdf.cards.base_card.BaseCard

Defines a ring for conical shell problems.

1	2	3	4	5	6	7	8
RINGAX	MID		R	Z			PS

Creates the RINGAX card

R = None

Radius

classmethod _init_from_empty()

classmethod add_card(card, comment='')

Adds a RINGAX card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

nid = None

Node ID

ps = None

local SPC constraint

raw_fields(self)

Gets the fields in their unmodified form

Returns:

fields : List[varies]

the fields that define the card

type = 'RINGAX'

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.axisymmetric.axisymmetric.RINGFL(ringfl, xa, xb, comment='')

Bases: pyNastran.bdf.cards.base_card.BaseCard

Creates the RINGFL card

classmethod _init_from_empty()

classmethod add_card(card, icard=0, comment='')

Adds a RINGAX card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

comment : str; default=’‘

a comment for the card

raw_fields(self)

Gets the fields in their unmodified form

Returns:

fields : List[varies]

the fields that define the card

type = 'RINGFL'

write_card(self, size=8, is_double=False)

The writer method used by BDF.write_card()

Parameters:

size : int; default=8

the size of the card (8/16)

class pyNastran.bdf.cards.axisymmetric.axisymmetric.TEMPAX(sid, ring, phi, temperature, comment='')

Bases: pyNastran.bdf.cards.thermal.loads.ThermalLoad

Defines temperature sets for conical shell problems.

1	2	3	4	5	6	7	8	9
TEMPAX	SID	RID1	PHI1	T1	SID	RID2	PHI2	T2
TEMPAX	4	7	30.0	105.3

Creates a TEMPAX card

Parameters:

sid : int

Load set identification number

temperatures : dict[nid]

nid : int

node id

temperature : float

the nodal temperature

comment : str; default=’‘

a comment for the card

classmethod _init_from_empty()

classmethod add_card(card, icard=0, comment='')

Adds a TEMPAX card from BDF.add_card(...)

Parameters:

card : BDFCard()

a BDFCard object

icard : int; default=0

???

comment : str; default=’‘

a comment for the card

cross_reference(self, model)

get_loads(self)

raw_fields(self)

Writes the TEMPAX card

repr_fields(self)

Writes the TEMP card

safe_cross_reference(self, model, debug=True)

sid = None

Load set identification number. (Integer > 0)

type = 'TEMPAX'

uncross_reference(self)

Removes cross-reference links

write_card(self, size=8, is_double=False)

Writes the card with the specified width and precision

Parameters:

size : int (default=8)

size of the field; {8, 16}

is_double : bool (default=False)

is this card double precision

Returns:

msg : str

the string representation of the card