pcalc

PathOperations.pcalc(oper='', labr='', lab1='', lab2='', fact1='', fact2='', const='', **kwargs)

Forms additional labeled path items by operating on existing path items.

Mechanical APDL Command: PCALC

Parameters:

operstr

Type of operation to be performed. See PCALC_notes below for specific descriptions of each operation:

• ADD - Adds two existing path items.

• MULT - Multiplies two existing path items.

• DIV - Divides two existing path items (a divide by zero results in a value of zero).

• EXP - Exponentiates and adds existing path items.

• DERI - Finds a derivative.

• INTG - Finds an integral.

• SIN - Sine.

• COS - Cosine.

• ASIN - Arcsine.

• ACOS - Arccosine.

• LOG - Natural log.

labrstr

Label assigned to the resulting path item.

lab1str

First labeled path item in operation.

lab2str

Second labeled path item in operation. Lab2 must not be blank for the MULT, DIV, DERI, and INTG operations.

fact1str

Factor applied to Lab1. A (blank) or ‘0’ entry defaults to 1.0.

fact2str

Factor applied to Lab2. A (blank) or ‘0’ entry defaults to 1.0.

conststr

Constant value (defaults to 0.0).

Notes

If Oper = ADD, the command format is:

pcalc,ADD, LabR, Lab1, Lab2, FACT1, FACT2, CONST

This operation adds two existing path items according to the operation:

LabR = ( FACT1 x Lab1 ) + ( FACT2 x Lab2 ) + CONST

It may be used to scale the results for a single path item.

If Oper = MULT, the command format is:

pcalc,MULT, LabR, Lab1, Lab2, FACT1

Lab2 must not be blank. This operation multiplies two existing path items according to the operation:

LabR = Lab1 x Lab2 x FACT1

If Oper = DIV, the command format is:

pcalc,DIV, LabR, Lab1, Lab2, FACT1

Lab2 must not be blank. This operation divides two existing path items according to the operation:

LabR = ( Lab1 / Lab2 ) x FACT1

If Oper = EXP, the command format is:

pcalc,EXP, LabR, Lab1, Lab2, FACT1, FACT2

This operation exponentiates and adds existing path items according to the operation:

LabR = (| Lab1 | ^FACT1 ) + (| Lab2 | ^FACT2 |)

If Oper = DERI, the command format is:

pcalc,DERI, LabR, Lab1, Lab2, FACT1

Lab2 must not be blank. This operation finds a derivative according to the operation:

LabR = FACT1 x d( Lab1 )/d( Lab2 )

If Oper = INTG, the command format is:

pcalc,INTG, LabR, Lab1, Lab2, FACT1

Lab2 must not be blank. This operation finds an integral according to the operation:

\[equation not available\]

Use S for Lab2 to integrate Lab1 with respect to the path length. S, the distance along the path, is automatically calculated by the program when a path item is created with the pdef command.

If Oper = SIN, COS, ASIN, ACOS, or LOG, the command format is:

pcalc,Oper, LabR, Lab1, FACT1, CONST

where the function (SIN, COS, ASIN, ACOS or LOG) is substituted for Oper and Lab2 is blank.

The operation finds the resulting path item according to one of the following formulas:

LabR = FACT2 x sin(FACT1 x Lab1) + CONST

LabR = FACT2 x cos(FACT1 x Lab1) + CONST

LabR = FACT2 x sin -1(FACT1 x Lab1) + CONST

LabR = FACT2 x cos -1(FACT1 x Lab1) + CONST

LabR = FACT2 x log(FACT1 x Lab1) + CONST