/DVPREL2

Optimization Keyword Relates a design variable to an analysis model property using a relationship defined by a /DEQATN card.

The equation inputs come from the referenced /DESVAR values and the constants defined on the /DTABLE card.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/DVPREL2/dvp_ID
title
prop_typ prop_ID prop_fid EQID
VARTYPE1 ID1 ID2 ID3 ID4 ID5 ID6 ID7 ID8 ID9
ID10 ID11 ID12 etc
VARTYPE2 ID1 ID2 ID3 ID4 ID5 ID6 ID7 ID8 ID9
ID10 ID11 ID12 etc

Definition

Field Contents SI Unit Example
dvp_ID Identification number.

(Integer > 0)
title Title.

(Character, maximum 100 characters)
prop_typ Property type. The type is specified immediately after the corresponding /PROP, as: 1
= 1
/PROP/TYPE1 (SHELL)
= 2
/PROP/TYPE2 (TRUSS)
= 3
/PROP/TYPE3 (BEAM)
= 11
/PROP/TYPE11 (SH_SANDW)
= 13
/PROP/TYPE18 (INT_BEAM)

(Integer ≥ 0)
prop_ID Property identifier .

(Integer > 0)
prop_fid Property field identifier to be related with design variable. Depending on various property types (prop_typ), the available options are different. 1

(Integer > 0)
EQID /DEQATN identifier that defines the response relationship.

(Integer > 0 or blank)
VARTYPE# Variable type.
=1
DESVAR
=2
DTABLE

(Integer > 0 or blank)
ID# Identifier variables defined in VARTYPE#..

When VARTYPE is DESVAR, or DTABLE, this list of IDs reference entities of the defined VARTYPE.

Comments

  1. The specific property field ID's that are related to the design variables are listed based on the following property types:
    prop_type = 1 (/PROP/SHELL):
    prop_fid
    1
    Thickness
    prop_type = 2 (/PROP/TRUSS):
    prop_fid
    1
    Area
    prop_type = 3 (/PROP/BEAM):
    prop_fid
    1
    Area
    2
    Iyy
    3
    Izz
    4
    Ixx
    prop_type = 11 (/PROP/SH_SANDW):
    prop_fid
    > 0
    Ply Thickness
    < 0
    Ply Orientation Angle
    prop_type = 18 (/PROP/INT_BEAM):
    prop_fid
    1
    First size of the predefined section L1
    2
    Second size of the predefined section L2
  2. This card is represented as an optimization design variable in HyperMesh.