shell
Module
digraph inheritance3c94153c66 {
bgcolor=transparent;
rankdir=LR;
size="";
"pyNastran.bdf.cards.base_card.BaseCard" [URL="../pyNastran.bdf.cards.base_card.html#pyNastran.bdf.cards.base_card.BaseCard",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="Defines a series of base methods for every card class"];
"pyNastran.bdf.cards.base_card.Element" [URL="../pyNastran.bdf.cards.base_card.html#pyNastran.bdf.cards.base_card.Element",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="defines the Element class"];
"pyNastran.bdf.cards.base_card.BaseCard" -> "pyNastran.bdf.cards.base_card.Element" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTN3" [URL="#pyNastran.bdf.cards.elements.shell.CPLSTN3",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top"];
"pyNastran.bdf.cards.elements.shell.CPLSTx3" -> "pyNastran.bdf.cards.elements.shell.CPLSTN3" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTN4" [URL="#pyNastran.bdf.cards.elements.shell.CPLSTN4",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top"];
"pyNastran.bdf.cards.elements.shell.CPLSTx4" -> "pyNastran.bdf.cards.elements.shell.CPLSTN4" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTN6" [URL="#pyNastran.bdf.cards.elements.shell.CPLSTN6",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top"];
"pyNastran.bdf.cards.elements.shell.CPLSTx6" -> "pyNastran.bdf.cards.elements.shell.CPLSTN6" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTN8" [URL="#pyNastran.bdf.cards.elements.shell.CPLSTN8",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top"];
"pyNastran.bdf.cards.elements.shell.CPLSTx8" -> "pyNastran.bdf.cards.elements.shell.CPLSTN8" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTS3" [URL="#pyNastran.bdf.cards.elements.shell.CPLSTS3",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+---------+-------+-------+----+----+----+-------+-------+-----+"];
"pyNastran.bdf.cards.elements.shell.TriShell" -> "pyNastran.bdf.cards.elements.shell.CPLSTS3" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTS4" [URL="#pyNastran.bdf.cards.elements.shell.CPLSTS4",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+---------+-------+-------+----+-------+----+-------+-------+------+"];
"pyNastran.bdf.cards.elements.shell.CPLSTx4" -> "pyNastran.bdf.cards.elements.shell.CPLSTS4" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTS6" [URL="#pyNastran.bdf.cards.elements.shell.CPLSTS6",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top"];
"pyNastran.bdf.cards.elements.shell.CPLSTx6" -> "pyNastran.bdf.cards.elements.shell.CPLSTS6" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTS8" [URL="#pyNastran.bdf.cards.elements.shell.CPLSTS8",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top"];
"pyNastran.bdf.cards.elements.shell.CPLSTx8" -> "pyNastran.bdf.cards.elements.shell.CPLSTS8" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTx3" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",tooltip="+---------+-------+-------+----+----+----+-------+"];
"pyNastran.bdf.cards.elements.shell.TriShell" -> "pyNastran.bdf.cards.elements.shell.CPLSTx3" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTx4" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",tooltip="+---------+-------+-------+----+----+----+----+-------+"];
"pyNastran.bdf.cards.elements.shell.QuadShell" -> "pyNastran.bdf.cards.elements.shell.CPLSTx4" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTx6" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled"];
"pyNastran.bdf.cards.elements.shell.TriShell" -> "pyNastran.bdf.cards.elements.shell.CPLSTx6" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CPLSTx8" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled"];
"pyNastran.bdf.cards.elements.shell.QuadShell" -> "pyNastran.bdf.cards.elements.shell.CPLSTx8" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CQUAD" [URL="#pyNastran.bdf.cards.elements.shell.CQUAD",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+-------+-------+-----+----+------------+----+----+----+----+"];
"pyNastran.bdf.cards.elements.shell.QuadShell" -> "pyNastran.bdf.cards.elements.shell.CQUAD" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CQUAD4" [URL="#pyNastran.bdf.cards.elements.shell.CQUAD4",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+--------+-------+-------+----+----+----+----+------------+---------+"];
"pyNastran.bdf.cards.elements.shell.QuadShell" -> "pyNastran.bdf.cards.elements.shell.CQUAD4" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CQUAD8" [URL="#pyNastran.bdf.cards.elements.shell.CQUAD8",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+--------+-------+-----+----+----+----+----+------------+-------+"];
"pyNastran.bdf.cards.elements.shell.QuadShell" -> "pyNastran.bdf.cards.elements.shell.CQUAD8" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CQUADR" [URL="#pyNastran.bdf.cards.elements.shell.CQUADR",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+--------+-------+-------+----+----+----+----+------------+---------+"];
"pyNastran.bdf.cards.elements.shell.QuadShell" -> "pyNastran.bdf.cards.elements.shell.CQUADR" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CSHEAR" [URL="#pyNastran.bdf.cards.elements.shell.CSHEAR",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+--------+-------+-------+----+----+----+----+"];
"pyNastran.bdf.cards.elements.shell.QuadShell" -> "pyNastran.bdf.cards.elements.shell.CSHEAR" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CTRIA3" [URL="#pyNastran.bdf.cards.elements.shell.CTRIA3",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+--------+-------+-------+----+----+----+------------+---------+"];
"pyNastran.bdf.cards.elements.shell.TriShell" -> "pyNastran.bdf.cards.elements.shell.CTRIA3" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CTRIA6" [URL="#pyNastran.bdf.cards.elements.shell.CTRIA6",fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",target="_top",tooltip="+--------+------------+---------+----+----+----+----+----+-----+"];
"pyNastran.bdf.cards.elements.shell.TriShell" -> "pyNastran.bdf.cards.elements.shell.CTRIA6" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.CTRIAR" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",tooltip="+--------+-------+-------+----+----+----+------------+---------+"];
"pyNastran.bdf.cards.elements.shell.TriShell" -> "pyNastran.bdf.cards.elements.shell.CTRIAR" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.QuadShell" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled"];
"pyNastran.bdf.cards.elements.shell.ShellElement" -> "pyNastran.bdf.cards.elements.shell.QuadShell" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.SNORM" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled",tooltip="+--------+-------+-------+----+-----+----+"];
"pyNastran.bdf.cards.base_card.BaseCard" -> "pyNastran.bdf.cards.elements.shell.SNORM" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.ShellElement" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled"];
"pyNastran.bdf.cards.base_card.Element" -> "pyNastran.bdf.cards.elements.shell.ShellElement" [arrowsize=0.5,style="setlinewidth(0.5)"];
"pyNastran.bdf.cards.elements.shell.TriShell" [fillcolor=white,fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",fontsize=10,height=0.25,shape=box,style="setlinewidth(0.5),filled"];
"pyNastran.bdf.cards.elements.shell.ShellElement" -> "pyNastran.bdf.cards.elements.shell.TriShell" [arrowsize=0.5,style="setlinewidth(0.5)"];
}
All shell elements are defined in this file. This includes:
CTRIA3
CTRIA6
CSHEAR
CQUAD
CQUAD4
CQUAD8
CQUADR
CPLTSN3
CPLSTN4
CPLSTN6
CPLSTN8
SNORM
All tris are TriShell, ShellElement, and Element objects. All quads are QuadShell, ShellElement, and Element objects.
- class pyNastran.bdf.cards.elements.shell.CPLSTN3(eid, pid, nids, theta=0.0, comment='')[source]
Bases:
CPLSTx3
NX specific card
- type = 'CPLSTN3'
- class pyNastran.bdf.cards.elements.shell.CPLSTN4(eid, pid, nids, theta=0.0, comment='')[source]
Bases:
CPLSTx4
dummy init
- type = 'CPLSTN4'
- class pyNastran.bdf.cards.elements.shell.CPLSTN6(eid, pid, nids, theta=0.0, comment='')[source]
Bases:
CPLSTx6
dummy init
- type = 'CPLSTN6'
- class pyNastran.bdf.cards.elements.shell.CPLSTN8(eid, pid, nids, theta=0.0, comment='')[source]
Bases:
CPLSTx8
dummy init
- type = 'CPLSTN8'
- class pyNastran.bdf.cards.elements.shell.CPLSTS3(eid, pid, nids, theta=0.0, tflag=0, T1=1.0, T2=1.0, T3=1.0, comment='')[source]
Bases:
TriShell
1
2
3
4 | 5
6
7
8
9
CPLSTS3
EID
PID
N1 | N2
N3
THETA
TFLAG
T1
T2
T3
dummy init
- classmethod add_card(card, comment='')[source]
Adds a CPLSTS3 card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- property node_ids
- repr_fields()[source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- type = 'CPLSTS3'
- class pyNastran.bdf.cards.elements.shell.CPLSTS4(eid, pid, nids, theta=0.0, tflag=0, T1=1.0, T2=1.0, T3=1.0, T4=1.0, comment='')[source]
Bases:
CPLSTx4
1
2
3
4
5
6
7
8
9
CPLSTS4
EID
PID
N1
N2
N3
N4
THETA
TFLAG
T1
T2
T3
T4
[‘CPLSTS4’, ‘1’, ‘5’, ‘17’, ‘18’, ‘19’, ‘20’, ‘0.0’]
dummy init
- classmethod add_card(card, comment='')[source]
Adds a CPLSTS3 card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- property node_ids
- repr_fields()[source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- type = 'CPLSTS4'
- class pyNastran.bdf.cards.elements.shell.CPLSTS6(eid, pid, nids, theta=0.0, comment='')[source]
Bases:
CPLSTx6
dummy init
- type = 'CPLSTS6'
- class pyNastran.bdf.cards.elements.shell.CPLSTS8(eid, pid, nids, theta=0.0, tflag=0, T1=1.0, T2=1.0, T3=1.0, T4=1.0, T5=1.0, T6=1.0, T7=1.0, T8=1.0, comment='')[source]
Bases:
CPLSTx8
dummy init
- type = 'CPLSTS8'
- class pyNastran.bdf.cards.elements.shell.CQUAD(eid, pid, nids, theta_mcid=0.0, comment='')[source]
Bases:
QuadShell
1
2
3
4
5
6
7
8
9
CQUAD
EID
PID
G1
G2
G3
G4
G5
G6
G7
G8
G9
THETA/MCID
theta_mcid is an MSC specific variable
Creates a CQUAD card
- Parameters:
- eidint
element id
- pidint
property id (PSHELL/PCOMP/PCOMPG)
- nidslist[int, int, int, int, int/None, int/None,
int/None, int/None, int/None]
node ids
- theta_mcidfloat; default=0.0
- floatmaterial coordinate system angle (theta) is defined
relative to the element coordinate system
- intx-axis from material coordinate system angle defined by
mcid is projected onto the element
- commentstr; default=’’
a comment for the card
- Area()[source]
- \[A = \frac{1}{2} \lvert (n_1-n_3) \times (n_2-n_4) \rvert\]
where a and b are the quad’s cross node point vectors
- classmethod add_card(card, comment='')[source]
Adds a CQUAD card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- eid
Element ID
- property node_ids
- repr_fields()[source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- type = 'CQUAD'
- class pyNastran.bdf.cards.elements.shell.CQUAD4(eid, pid, nids, theta_mcid=0.0, zoffset=0.0, tflag=0, T1=None, T2=None, T3=None, T4=None, comment='')[source]
Bases:
QuadShell
1
2
3
4 | 5
6
7
8
9
CQUAD4
EID
PID
N1 | N2
N3
N4
THETA/MCID
ZOFFSET
TFLAG
T1
T2
T3
T4
Creates a CQUAD4 card
- Parameters:
- eidint
element id
- pidint
property id (PSHELL/PCOMP/PCOMPG)
- nidslist[int, int, int, int]
node ids
- zoffsetfloat; default=0.0
Offset from the surface of grid points to the element reference plane. Requires MID1 and MID2.
- theta_mcidfloat; default=0.0
- floatmaterial coordinate system angle (theta) is defined
relative to the element coordinate system
- intx-axis from material coordinate system angle defined by
mcid is projected onto the element
- tflagint; default=0
0 : Ti are actual user specified thicknesses 1 : Ti are fractions relative to the T value of the PSHELL
- T1 / T2 / T3 / T4float; default=None
If it is not supplied, then T1 through T4 will be set equal to the value of T on the PSHELL entry.
- commentstr; default=’’
a comment for the card
- _properties = ['cp_name_map', '_field_map']
- classmethod add_card(card, comment='')[source]
Adds a CQUAD4 card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cp_name_map = {'T1': 'T1', 'T2': 'T2', 'T3': 'T3', 'T4': 'T4'}
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- eid
Element ID
- flip_normal()[source]
1---2 1---4 2---1 | | --> | | --> | | | | | | | | 4---3 2---3 3---4 nominal fast flip preserves material orientation
- property node_ids
- repr_fields()[source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- split_to_ctria3(eida, eidb)[source]
Splits a CQUAD4 into two CTRIA3s
Todo
doesn’t consider theta_mcid if a float correctly (use an integer)
Todo
doesn’t optimize the orientation of the nodes yet…
- type = 'CQUAD4'
- class pyNastran.bdf.cards.elements.shell.CQUAD8(eid, pid, nids, theta_mcid=0.0, zoffset=0.0, tflag=0, T1=None, T2=None, T3=None, T4=None, comment='')[source]
Bases:
QuadShell
1
2
3
4
5
6
7
8
9
CQUAD8
EID
PID
G1
G2
G3
G4
G5
G6
G7
G8
T1
T2
T3
T4
THETA/MCID
ZOFFS
TFLAG
Creates a CQUAD8 card
- Parameters:
- eidint
element id
- pidint
property id (PSHELL/PCOMP/PCOMPG)
- nidslist[int, int, int, int, int/None, int/None, int/None, int/None]
node ids
- zoffsetfloat; default=0.0
Offset from the surface of grid points to the element reference plane. Requires MID1 and MID2.
- theta_mcidfloat; default=0.0
- floatmaterial coordinate system angle (theta) is defined
relative to the element coordinate system
- intx-axis from material coordinate system angle defined by
mcid is projected onto the element
- tflagint; default=0
0 : Ti are actual user specified thicknesses 1 : Ti are fractions relative to the T value of the PSHELL
- T1 / T2 / T3 / T4float; default=None
If it is not supplied, then T1 through T4 will be set equal to the value of T on the PSHELL entry.
- commentstr; default=’’
a comment for the card
- Area() float [source]
- \[A = \frac{1}{2} \lvert (n_1-n_3) \times (n_2-n_4) \rvert\]
where a and b are the quad’s cross node point vectors
- AreaCentroid() tuple[float, ndarray] [source]
1-----2 | /| | A1/ | | / | |/ A2 | 4-----3 centroid c = sum(ci*Ai)/sum(A) where: c=centroid A=area
- classmethod add_card(card: BDFCard, comment: str = '')[source]
Adds a CQUAD8 card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- eid
Element ID
- classmethod export_to_hdf5(h5_file: Any, model, eids)[source]
exports the elements in a vectorized way
- property node_ids: list[int | None]
- repr_fields()[source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- type = 'CQUAD8'
- class pyNastran.bdf.cards.elements.shell.CQUADR(eid, pid, nids, theta_mcid=0.0, zoffset=0.0, tflag=0, T1=None, T2=None, T3=None, T4=None, comment='')[source]
Bases:
QuadShell
1
2
3
4 | 5
6
7
8
9
CQUADR
EID
PID
N1 | N2
N3
N4
THETA/MCID
ZOFFSET
TFLAG
T1
T2
T3
T4
Creates a CQUADR card
- Parameters:
- eidint
element id
- pidint
property id (PSHELL/PCOMP/PCOMPG)
- nidslist[int, int, int, int]
node ids
- zoffsetfloat; default=0.0
Offset from the surface of grid points to the element reference plane. Requires MID1 and MID2.
- theta_mcidfloat; default=0.0
- floatmaterial coordinate system angle (theta) is defined
relative to the element coordinate system
- intx-axis from material coordinate system angle defined by
mcid is projected onto the element
- tflagint; default=0
0 : Ti are actual user specified thicknesses 1 : Ti are fractions relative to the T value of the PSHELL
- T1 / T2 / T3 / T4float; default=None
If it is not supplied, then T1 through T4 will be set equal to the value of T on the PSHELL entry.
- commentstr; default=’’
a comment for the card
- classmethod add_card(card, comment='')[source]
Adds a CQUADR card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- eid
Element ID
- property node_ids
- repr_fields()[source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- type = 'CQUADR'
- class pyNastran.bdf.cards.elements.shell.CSHEAR(eid, pid, nids, comment='')[source]
Bases:
QuadShell
1
2
3
4 | 5
6
7
CSHEAR
EID
PID
N1 | N2
N3
N4
Creates a CSHEAR card
- Parameters:
- eidint
element id
- pidint
property id (PSHEAR)
- nidslist[int, int, int, int]
node ids
- commentstr; default=’’
a comment for the card
- Area() float [source]
- \[A = \frac{1}{2} \lvert (n_1-n_3) \times (n_2-n_4) \rvert\]
where a and b are the quad’s cross node point vectors
- classmethod add_card(card, comment='')[source]
Adds a CSHEAR card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- eid
Element ID
- property node_ids: list[int]
- repr_fields() list[str | int] [source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- type = 'CSHEAR'
- class pyNastran.bdf.cards.elements.shell.CTRIA3(eid: int, pid: int, nids: list[int], zoffset: float = 0.0, theta_mcid: int | float = 0.0, tflag: int = 0, T1: float | None = None, T2: float | None = None, T3: float | None = None, comment: str = '')[source]
Bases:
TriShell
1
2
3
4 | 5
6
7
8
CTRIA3
EID
PID
N1 | N2
N3
THETA/MCID
ZOFFSET
TFLAG
T1
T2
T3
Creates a CTRIA3 card
- Parameters:
- eidint
element id
- pidint
property id (PSHELL/PCOMP/PCOMPG)
- nidslist[int, int, int]
node ids
- zoffsetfloat; default=0.0
Offset from the surface of grid points to the element reference plane. Requires MID1 and MID2.
- theta_mcidfloat; default=0.0
- floatmaterial coordinate system angle (theta) is defined
relative to the element coordinate system
- intx-axis from material coordinate system angle defined by
mcid is projected onto the element
- tflagint; default=0
0 : Ti are actual user specified thicknesses 1 : Ti are fractions relative to the T value of the PSHELL
- T1 / T2 / T3float; default=None
If it is not supplied, then T1 through T3 will be set equal to the value of T on the PSHELL entry.
- commentstr; default=’’
a comment for the card
- _properties = ['cp_name_map', '_field_map']
- classmethod add_card(card: str, comment: str = '')[source]
Adds a CTRIA3 card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- classmethod add_card_lax(card: str, comment: str = '')[source]
Adds a CTRIA3 card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cp_name_map = {'T1': 'T1', 'T2': 'T2', 'T3': 'T3'}
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- flip_normal()[source]
Flips normal of element.
1 1 2 * * --> * * --> * * * * * * * * 2-----3 3-----2 3-----1 nominal fast flip perserve material orientation
- property node_ids: list[int]
- repr_fields()[source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- type = 'CTRIA3'
- class pyNastran.bdf.cards.elements.shell.CTRIA6(eid, pid, nids, theta_mcid=0.0, zoffset=0.0, tflag=0, T1=None, T2=None, T3=None, comment='')[source]
Bases:
TriShell
1
2
3
4 | 5
6
7
8
9
CTRIA6
EID
PID
N1 | N2
N3
N4
N5
N6
THETA/MCID
ZOFFSET
T1
T2
T3
Creates a CTRIA6 card
- Parameters:
- eidint
element id
- pidint
property id (PSHELL/PCOMP/PCOMPG)
- nidslist[int, int, int, int/None, int/None, int/None]
node ids
- zoffsetfloat; default=0.0
Offset from the surface of grid points to the element reference plane. Requires MID1 and MID2.
- theta_mcidfloat; default=0.0
- floatmaterial coordinate system angle (theta) is defined
relative to the element coordinate system
- intx-axis from material coordinate system angle defined by
mcid is projected onto the element
- tflagint; default=0
0 : Ti are actual user specified thicknesses 1 : Ti are fractions relative to the T value of the PSHELL
- T1 / T2 / T3float; default=None
If it is not supplied, then T1 through T3 will be set equal to the value of T on the PSHELL entry.
- commentstr; default=’’
a comment for the card
- AreaCentroidNormal()[source]
Returns area, centroid, normal as it’s more efficient to do them together
- Normal()[source]
Get the normal vector, \(n\).
\[n = \frac{(n_0-n_1) \times (n_0-n_2)}{\lvert (n_0-n_1) \times (n_0-n_2) \lvert}\]
- classmethod add_card(card: BDFCard, comment: str = '')[source]
Adds a CTRIA6 card from
BDF.add_card(...)
- Parameters:
- cardBDFCard()
a BDFCard object
- commentstr; default=’’
a comment for the card
- cross_reference(model: BDF) None [source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- flip_normal()[source]
Flips normal of element.
1 1 ** ** * * * * 4 6 --> 6 4 * * * * 2----5---3 3----5---2
- property node_ids
- repr_fields()[source]
Gets the fields in their simplified form
- Returns:
- fieldslist[varies]
the fields that define the card
- safe_cross_reference(model: BDF, xref_errors)[source]
Cross links the card so referenced cards can be extracted directly
- Parameters:
- modelBDF()
the BDF object
- type = 'CTRIA6'
- pyNastran.bdf.cards.elements.shell._triangle_area_centroid_normal(nodes, card)[source]
Gets the area, centroid and normal for a triangle.
- Parameters:
- nodeslist[np.ndarray]
List of three triangle vertices.
- Returns:
- areafloat
Area of triangle.
- centroidndarray
Centroid of triangle.
- unit_normalndarray
Unit normal of triangles.
- cardCTRIA3(), CTRIA6()
the self parameter