/DSIZE
Optimization Keyword Defines parameters for the generation of freesize design variables.
Format
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

/DSIZE/dsize_ID  
title  
grpart_ID  THICK  STRES  MEMBSIZ  PATRN  PATREP  NGROUP  COMP 
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

T0  T1 
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

MAXSTRS 
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

MINDIM 
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

TYP  AID  XA  YA  ZA  
FIX  XF  YF  ZF  
UCYC  SID  XS  YS  ZS 
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

ptrepCID  
CAID  XCA  YCA  ZCA  
CFID  XCF  YCF  ZCF  
CSID  XCS  YCS  ZCS  
CTID  XCT  YCT  ZCT 
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

mainID  SX  SY  SZ  
ptreCID  
CAID  XCA  YCA  ZCA  
CFID  XCF  YCF  ZCF  
CSID  XCS  YCS  ZCS  
CTID  XCT  YCT  ZCT 
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

CTYP=1:  
CTYP  LTMIN  LTMAX  grsh3n_ID  grshel_ID  LTEXC  
CTYP=2:  
CTYP  PTANGLE  PTMIN  PTMAX  grsh3n_ID  grshel_ID  PTEXC  
CTYP=3:  
CTYP  PPANGLE  PPMIN  PPMAX  grsh3n_ID  grshel_ID  PPEXC  
CTYP=4:  
CTYP  PMANGLE  PMMAN  grsh3n_ID  grshel_ID  PMEXC  
CTYP=5:  
CTYP  BANGLE1  BANGLE2  
CTYP=6:  
CTYP  CANGLE  CTHICK  
CTYP=7:  
CTYP  PDANGLE  PDTYP  PDMAX  grsh3n_ID  grshel_ID  PDEXC 
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

ETYP_{1}  EGRP_{1}  
ETYP_{2}  EGRP_{2}  
etc  etc 
Definition
Field  Contents  SI Unit Example 

dsize_ID  Freesize design variable
identifier. (Integer > 0) 

title  Title. (Character, maximum 100 characters) 

grpart_ID  Part group identifier
defining the design space. (Integer > 0) 

THICK  Indicates if minimum and
possibly maximum thickness values need to be defined.
(Integer ≥ 0) 

T0  Minimum thickness. (Real > 0.0 or blank) 

T1  Maximum thickness. (Real > 0.0 or blank) 

STRESS  Indicates if von Mises
stress constraint needs to be defined.
(Integer) 

MAXSTRS  Upper bound constraint on
von Mises stress. No default (Real > 0.0) 

MEMBSIZ  Active member size control flag.
(Integer ≥ 0) 

MINDIM  Minimum diameter of
members formed is specified. This field can be used to eliminate
small members. It also eliminates checkerboard results. Default = No minimum member size control (Real > 0.0) 

PATRN  Active pattern grouping flag.
(Integer) 

TYP  Pattern grouping type requested.
Default = No pattern grouping (Integer) 

AID  Variable pattern grouping
anchor node identifier.
(Integer > 0 or blank) 

XA, YA, ZA  Coordinates of the pattern
grouping anchor point.
(Real or blank) 

FID  Node identifier that
defines the direction of the first vector for variable pattern
grouping.
(Integer > 0 or blank) 

XF, YF, ZF  Components of the first
vector that defines pattern grouping.
(Real or blank) 

UCYC  Number of cyclical
repetitions for cyclical symmetry. This field defines the number of
radial "wedges" for cyclical symmetry. The angle of each wedge is
computed as: 360.0/UCYC. Default = blank (Integer > 0 or blank) 

SID  Node identifier of the
second point for pattern grouping definition.
(Integer or blank) 

XS, YS, ZS  Coordinates of the second
point for pattern grouping definition.
(Real or blank) 

PATREP  Indicates if pattern
repetition is defined and repetition type.
(Integer) 

mainID  Main
/DSIZE identifier for pattern
definition. This field is required only for PATREP =2. (Integer > 0) 

SX, SY, SZ  Scale factors for pattern
repetition in the X, Y, and Z directions, respectively. Default = 1.0 (Real > 0.0) 

ptrepCID  Skew identifier used as
the pattern repetition coordinate system. Default = 0 (Integer > 0) 

CAID  Node identifier of an
anchor point for the definition of a pattern repetition coordinate
system.
(Integer > 0 or blank) 

XCA, YCA, ZCA  Coordinates of an anchor
point for the definition of a pattern repetition coordinate
system.
(Real or blank) 

CFID  Node identifier of the
first point for the definition of a pattern repetition coordinate
system.
(Integer > 0 or blank) 

XCF, YCF, ZCF  Coordinates of the first
point for the definition of a pattern repetition coordinate
system.
(Real or blank) 

CSID  Node identifier of a
second point for the definition of a pattern repetition coordinate
system.
(Integer > 0 or blank) 

XCS, YCS, ZCS  Coordinates of a second
point for the definition of a pattern repetition coordinate
system.
(Real or blank) 

CTID  Node identifier of a third
point for the definition of a pattern repetition coordinate
system.
(Integer > 0 or blank) 

XCT, YCT, ZCT  Coordinates of a third
point for the definition of a pattern repetition coordinate
system.
(Real or blank) 

NGROUP  Number of element groups
used in zone based freesizing optimization. Default = 0 (Integer ≥ 0) 

ETYP_{i}  Type of followed element group.
(Integer > 0), i=1, ..., NGROUP 

EGRP_{i}  Element group numbers used
in zone based freesizing optimization. (Integer > 0), i=1, ...,NGROUP 

COMP  Composite manufacturing constraints applied are indicated. Information about manufacturing constraints is to follow. The value of COMP is equal to the total number of composite manufacturing definitions that follow.  
CTYP  Composite manufacturing
type definition flag.
(Integer) 

LTMIN  Minimum laminate thickness
for the laminate thickness constraint (CTYP =
1). (Real or blank) 

LTMAX  Maximum laminate thickness
for the laminate thickness constraint (CTYP =
1). (Real or blank) 

grsh3n_ID  3node shell group
identifier. (Integer > 0) 

grshel_ID  4node shell group
identifier. (Integer > 0) 

LTEXC  Indicates that certain
plies are excluded from the laminate thickness constraint
(CTYP = 1). Support options are:
(Integer) 

PTANGLE  Ply orientation in degrees
to which the ply thickness constraint (CTYP =
2) is applied. (Real) 

PTMIN  Minimum thickness for the
ply thickness constraint (CTYP =
2). (Real or blank) 

PTMAX  Maximum thickness for the
ply thickness constraint (CTYP =
2). (Real or blank) 

PTEXC  Indicates that certain
plies are excluded from the ply thickness constraint
(CTYP = 2). Supported
options are:
(Integer) 

PPANGLE  Ply orientation in degrees
to which the ply thickness percentage constraint is applied
(CTYP =
3). (Real) 

PPMIN  Minimum percentage
thickness for the ply thickness percentage constraint
(CTYP = 3). (Real or blank) 

PPMAX  Maximum percentage
thickness for the ply thickness percentage constraint
(CTYP = 3). (Real or blank) 

PPEXC  Indicates that certain
plies are excluded from the ply thickness percentage constraint
(CTYP = 3). Supported
options are:
(Integer) 

PMANGLE  Ply orientation in degrees
to which the manufacturable ply thickness constraint is applied
(CTYP =
4). (Real) 

PMMAN  Manufacturable ply
thickness. Default = blank (Real > 0.0) 

PMEXC  Indicates that certain
plies are excluded from the manufacturable ply thickness constraint
(CTYP = 4). Supported
options are:
(Integer) 

BANGLE1  First ply orientation in
degrees to which the balance constraint is applied
(CTYP =
5). (Real) 

BANGLE2  Second ply orientation in
degrees to which the balance constraint is applied
(CTYP =
5). (Real) 

CANGLE  Ply orientation in degrees
to which the constant thickness constraint is applied
(CTYP =
6). (Real) 

CTHICK  Constant ply thickness for
the constant thickness constraint (CTYP =
6). (Real) 

PDANGLE  Ply orientation in degrees
to which the ply dropoff constraint is applied
(CTYP =
7). (Real) 

PDTYP  Dropoff constraint type:
2
(Integer) 

PDMAX  Maximum allowed dropoff
for the ply dropoff constraint (CTYP =
7). (Real) 

PDEXC  Indicates that certain
plies are excluded from the ply dropoff constraint
(CTYP = 7). Supported
options are:
(Integer) 
Example
# Free size parameters
#12345678910
/DSIZE/3000
freeSizeOpti
### COPM=6: 6 composite manufacturing constraints are applied
### CTYP=3: Ply thickness percentage constraints are applied
### CTYP=4: Manufacturable ply thickness constraints are applied.
### CTYP=5: A balance constraint is applied.
#12345678910
# grpartID THICK STRESS MEMBSIZ PATRN PATREP NGROUP COMP
10001 0 0 0 0 0 0 6
# CTYP=3 PPANGLE PPMIN PPMAX grsh3n_ID grshel_ID PPEXC
3 0. 0. 0.8
# CTYP=4 PMANGLE PMMAN grsh3n_ID grshel_ID PMEXC
4 0. 0.1
# CTYP=4 PMANGLE PMMAN grsh3n_ID grshel_ID PMEXC
4 45.0 0.1
# CTYP=4 PMANGLE PMMAN grsh3n_ID grshel_ID PMEXC
4 45.0 0.1
# CTYP=4 PMANGLE PMMAN grsh3n_ID grshel_ID PMEXC
4 90. 0.1
# CTYP=5 BANGLE1 BANGLE2
5 45.0 45.0
#12345678910
Comments
 This entry is represented as an optimization objective in HyperMesh and HyperCrash.
 The options for selecting the type
of dropoff constraints for PDTYP are defined for a set of
plies.The PDTYP options are:
 PLYSLP
 PLYDRP
 TOTSLP
 TOTDRP
Assuming that the plies are stacked as shown above, the following definition is: