base_card Package

base_card Module

class pyNastran.bdf.cards.base_card.BaseCard

Bases: object

Defines a series of base methods for every card class (e.g., GRID, CTRIA3) including:

• deepcopy()
• get_stats()
• validate()
• object_attributes(mode=’public’, keys_to_skip=None)
• object_methods(self, mode=’public’, keys_to_skip=None)
• comment
• update_field(self, n, value)

_is_same_fields_long(self, fields1, fields2)

helper for __eq__

comment

accesses the comment

get_field(self, n)

Gets a field based on it’s field number

Parameters:

n : int

the field number

Returns:

value : int/float/str/None

the value of the field

get_stats(self)

Prints out an easy to read summary of the card

object_attributes(self, mode='public', keys_to_skip=None, filter_properties=False)

See also

pyNastran.utils.object_attributes(…)

object_methods(self, mode='public', keys_to_skip=None)

See also

pyNastran.utils.object_methods(…)

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

prints the card in 8/16/16-double format

repr_fields(self)

Gets the fields in their simplified form

Returns:

fields : List[varies]

the fields that define the card

rstrip(self)

update_field(self, n, value)

Updates a field based on it’s field number.

Parameters:

n : int

the field number

value : int/float/str/None

the value to update the field to

.. note::

This is dynamic if the card length changes.

update_field can be used as follows to change the z coordinate

of a node::

>>> nid = 1
>>> node = model.nodes[nid]
>>> node.update_field(3, 0.1)

validate(self)

card checking method that should be overwritten

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

write_card_16(self, is_double=False)

class pyNastran.bdf.cards.base_card.Element

Bases: pyNastran.bdf.cards.base_card.BaseCard

defines the Element class

dummy init

Pid(self)

Gets the Property ID of an element

Returns:

pid : int

the Property ID

_verify_unique_node_ids(self, required_node_ids, non_required_node_ids=None)

get_node_positions(self, nodes=None)

returns the positions of multiple node objects

get_node_positions_no_xref(self, model, nodes=None)

returns the positions of multiple node objects

pid = 0

prepare_node_ids(self, nids, allow_empty_nodes=False)

Verifies all node IDs exist and that they’re integers

validate_node_ids(self, allow_empty_nodes=False)

verify_unique_node_ids(self)

class pyNastran.bdf.cards.base_card.Material

Bases: pyNastran.bdf.cards.base_card.BaseCard

Base Material Class

dummy init

Mid(self)

returns the material ID of an element

Returns:

mid : int

the Material ID

TRef

cross_reference(self, model)

dummy cross reference method for a Material

class pyNastran.bdf.cards.base_card.Property

Bases: pyNastran.bdf.cards.base_card.BaseCard

Base Property Class

dummy init

Mid(self)

returns the material ID of an element

Returns:

mid : int

the Material ID

Pid(self)

returns the property ID of an property

Returns:

pid : int

the Property ID

write_card_16(self, is_double=False)

write_card_8(self)

pyNastran.bdf.cards.base_card.break_word_by_trailing_integer(pname_fid)

Splits a word that has a value that is an integer

Parameters:

pname_fid : str

the DVPRELx term (e.g., A(11), NSM(5))

Returns:

word : str

the value not in parentheses

value : int

the value in parentheses

Examples

>>> break_word_by_trailing_integer('T11')
('T', '11')
>>> break_word_by_trailing_integer('THETA11')
('THETA', '11')

pyNastran.bdf.cards.base_card.break_word_by_trailing_parentheses_integer_ab(pname_fid)

Splits a word that has a value that can be A/B as well as an integer

Parameters:

pname_fid : str

the DVPRELx term; A(11), NSM(5), NSM(B)

Returns:

word : str

the value not in parentheses

value : int/str

the value in parenthese

Examples

>>> break_word_by_trailing_parentheses_integer('A(11)')
('A', '11')
>>> break_word_by_trailing_parentheses_integer('NSM(11)')
('NSM', '11')
>>> break_word_by_trailing_parentheses_integer('NSM(B)')
('NSM', 'B')