CPYRA – Five-sided Solid Element with five or thirteen grid points
Defines the connections of the PYRA solid element.
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(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
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CPYRA |
EID |
PID |
G1 |
G2 |
G3 |
G4 |
G5 |
G6 |
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|
|
G7 |
G8 |
G9 |
G10 |
G11 |
G12 |
G13 |
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|
|
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
|
CPYRA |
71 |
4 |
3 |
4 |
5 |
6 |
7 |
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Field |
Contents |
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EID |
Unique element identification number. No default (Integer > 0) |
|
PID |
Identification number of a PSOLID property entry. Default = EID (Integer > 0) |
|
G# |
Grid point identification numbers of connection points. Default = blank (Integer > 0 or blank) |
Element identification numbers must be unique with respect to all other element identification numbers.
Grid points G1,…,G4 must be given in consecutive order about the quadrilateral face.
The edge points, G6 through G13, are optional. If any of the edge points are present, they all must be used. The continuation must not be present for the 5-noded version of this element.
It is recommended that the edge points be placed near the middle of the edge.
CPYRA definition
Stresses are output in the material coordinate system. The material coordinate system is defined on the referenced PSOLID entry. It may be defined as the basic coordinate system (CORDM = 0), a defined system (CORDM = Integer > 0), or the element coordinate system (CORDM = -1).
The element coordinate system for the CPYRA element is defined as follows:
Three intermediate vectors R, S, T are chosen by the following rules:
|
R |
Joins the midpoints of the edges from G1 to G4 and G2 to G3. |
|
S |
Joins the midpoints of the edges from G1 to G2 and G3 to G4. |
|
T |
Joins the intersection of R and S to G5. |
CPYRA element coordinate system
The origin of the element coordinate system is located at the intersection of the vectors R and S.
The element z-axis corresponds to the T vector.
The element y-axis is the cross product of the T and R vectors.
The element x-axis is the cross product of the element y-axis and the element z-axis.
Go To
Guidelines for Bulk Data Entries
Alphabetical List of Bulk Data Entries