/PLY
Block Format Keyword This option is used to define plies made of 4-node and 3-node shell elements with /PROP/PCOMPP.
Format
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
/PLY/ply_ID/unit_ID | |||||||||
ply_title | |||||||||
mat_ID | t | grsh4n_ID | grsh3n_ID | Npt_ply |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
---|---|---|---|---|---|---|---|---|---|
drape_ID | def_orth |
Definitions
Field | Contents | SI Unit Example |
---|---|---|
ply_ID | Ply identifier (Integer, maximum 10 digits) |
|
unit_ID | Unit Identifier (Integer, maximum 10 digits) |
|
ply_title | Ply title (Character, maximum 100 characters) |
|
mat_ID | Material identifier for
ply (Integer) |
|
t | Thickness of
ply (Real) |
|
Incremental angle for
ply (Real) |
||
grsh4n_ID | Shell 4-nodes group
identifier connected to Ply (Integer, maximum 10 digits) |
|
grsh3n_ID | Shell 3-nodes group
identifier connected to Ply (Integer, maximum 10 digits) |
|
Npt_ply | Number of integration
points through ply thickness with, 1 ≤ Npt_ply ≤
10
(Integer) |
|
Angle between first and
second material direction for ply
. Default = 90.0 (Real) |
||
drape_ID | Optional: Drape
identifier. 6 (Integer) |
|
def_orth | Optional: Orthotropy
angle. 5
(Integer) |
Comments
- The ply option is used in combination with /STACK and /PROP/PCOMPP to create ply-based sandwich composite properties. See Example (Substack with /DRAPE) in /STACK.
- All elements defined in the ply must use the /PROP/PCOMPP property. The compatibility to material law of this option is similar to /STACK.
- The ply can be attached to a group of shell element (4 or 3 node shell or both).
- If both the grsh4n_ID and the grsh3n_ID are 0, the ply is void (no element).
- The orthotropy angle in
- Orthotropy angle defined without def_orth and
drape_ID in optional lineThe angle for ply (in /STACK)
(1) Where, is defined in /STACK.
- Orthotropy angle defined with def_orth and
drape_ID in optional line
- If def_orth = 2, the angle
between the reference direction and the first direction of
orthotropy is:
(2) Where, is the angle increment defined in the drape option drape_ID (if any) and is defined in /STACK for ply.
- If def_orth = 1, the angle
between the shell skew and the first direction of orthotropy
is:
(3) Where, is the angle increment defined in the drape option drape_ID (if any) and is defined in the shell (/SHELL or /SH3N).
If def_orth = 1, skew_ID, and VX, VY, VZ from /STACK input are ignored.
- If def_orth = 2, the angle
between the reference direction and the first direction of
orthotropy is:
- Orthotropy angle defined without def_orth and
drape_ID in optional line
- If drape_IDis defined, the angle of each element defined in the drape is incremented by the value defined for this element and the thickness is modified according to the thinning for this element (/DRAPE).