/DRESP2

The /DRESP2 card identifies the equation to use for the response relationship and the input values to evaluate the response function.

Format

Definitions

Example

#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/DRESP1/1
u_in
### RTYPE=5: Displacement
### PTYPE=1: Node
### ATTA=1 : Translational displacement in X-direction 
### ATTI=103 : 103 is node group identifier is due to PTYPE = 1
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#    RTYPE     PTYPE    REGION      ATTA      ATTB      ATTI
         5         1                   1                 103
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/DRESP1/2
u_out
### RTYPE=5: Displacement
### PTYPE=1: Node
### ATTA=1 : Translational displacement in X-direction 
### ATTI=104 : 104 is node group identifier is due to PTYPE = 1
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#    RTYPE     PTYPE    REGION      ATTA      ATTB      ATTI
         5         1                   1                 104
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/DRESP2/4
dresp2
### EQID=1: /DEQATN identifier is 1
### VARTYPE1=3: Indicates the type of variables is 3 (DRESP1)
### ID1=1: first Variable(x) is ID1=1 in DRESP1 (dx in node group 103)
### ID2=2: second Variable(y) is ID2=2 in DRESP1 (dx in node group 104)
#     FUNC      EQID    REGION
         1
# VARTYPE1       ID1       ID2       ID1       ID2       ID1       ID2       ID1       ID2       ID1
         3         1         2
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/DEQATN/1
deqatn
# EQUATIONS
dm(x,y)=(x+y)/2.
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

Comments

1. /DRESP2 entries must have unique identification numbers with respect to /DRESP1 entries.
2. Any number of VARTYPE# continuation lines can be defined. The order in which the VARTYPE# continuation lines are listed on the /DRESP2 card is not specified. The same VARTYPE# can be repeated any number of times, in any position, on the card. However, the order in which the VARTYPE# continuation lines are listed will affect the solution as the values are passed to the equation (or function) in the listed sequence.
3. /DRESP2 cannot reference itself directly or recursively, but multiple levels of referencing are allowed.
4. If VARTYPE is DNODE, a list of NODE could be defined, where every second value is a NODE identifier. For example:

   "DNODE, 11, 2" indicates the Y coordinate of NODE Number 11.

   Sequence is repeated for VARTYPE = DNODE. For example:

   "DNODE, 11, 2, 12, 1" indicates the Y coordinate of NODE Number 11 and X coordinate of NODE Number 12.

5. The following functions can be used instead of an EQID. If FUNC is used, the /DEQATN entry is no longer needed. The functions are applied to all arguments on the /DRESP2 regardless of their type.

   Function	Description	Formula
   SUM	Sum of arguments	$\mathrm{SUM}\left(y_1,y_2\cdot \cdot \cdot y_m\right)={\displaystyle \sum _{i=1}^m{y}_i}$
   AVG	Average of arguments	$\mathrm{AVG}\left(y_1,y_2\cdot \cdot \cdot y_m\right)=\frac{{\displaystyle \sum _{i=1}^m{y}_i}}{m}$
   SSQ	Sum of square of arguments	$\mathrm{SSQ}\left(y_1,y_2\cdot \cdot \cdot y_m\right)={\displaystyle \sum _{i=1}^m{y}_i^2}$
   RSS	Square root of sum of squares of arguments	$\mathrm{RSS}\left(y_1,y_2\cdot \cdot \cdot y_m\right)=\sqrt{{\displaystyle \sum _{i=1}^m{y}_i^2}}$
   MAX	Maximum of arguments
   MIN	Minimum of arguments
   SUMABS	Sum of absolute value of arguments	$\mathrm{SUM}\left(y_1,y_2\cdot \cdot \cdot y_m\right)={\displaystyle \sum _{i=1}^m\left|y_i\right|}$
   AVGABS	Average of absolute value of arguments	$\mathrm{AVG}\left(y_1,y_2\cdot \cdot \cdot y_m\right)=\frac{{\displaystyle \sum _{i=1}^m\left|y_i\right|}}{m}$
   MAXABS	Maximum of absolute arguments
   MINABS	Minimum of absolute value of arguments