PRCINT

PRCINT, ID, Node, Dtype
Lists fracture parameter (CINT) results data.

POST1: Results

ID

Crack ID number.

Node

Crack tip node number. Default = ALL. Valid only for 3D analysis.

Dtype

Data type to output:

JINT

—

J-integral

IIN1

—

Interaction integral 1

IIN2

—

Interaction integral 2

IIN3

—

Interaction integral 3

—

Mode 1 stress-intensity factor

—

Mode 2 stress-intensity factor

—

Mode 3 stress-intensity factor

—

Mode 1 energy release rate

—

Mode 2 energy release rate

—

Mode 3 energy release rate

—

Total energy release rate

MFTX

—

Total material force X

MFTY

—

Total material force Y

MFTZ

—

Total material force Z

TSTRESS

—

T-stress

CEXT

—

Crack extension

CSTAR

—

C*-integral

STTMAX

—

Maximum circumferential stress

PSMAX

—

Maximum circumferential stress when

DLTA

—

Incremental crack extension in a fatigue/static crack-growth analysis

DLTN

—

Number of incremental cycles in a fatigue/static crack-growth analysis

DLTK

—

Equivalent stress-intensity factor range in a fatigue/static crack-growth analysis

KEQV

—

Equivalent stress-intensity factor in a fatigue/static crack-growth analysis

KANG

—

Kink angle (degree) in a fatigue/static crack-growth analysis

—

Stress (load) ratio in a fatigue/static crack-growth analysis

UFAC

—

U-factor (crack closure) in a fatigue/static crack-growth analysis

CRDX

—

X coordinate of the crack tip

CRDY

—

Y coordinate of the crack tip

CRDZ

—

Z coordinate of the crack tip

APOS

—

Position attribute of the crack-tip node:

Positive integer –

—

The subcrack^[3] ID number to which this tip belongs. For a crack with only a single subcrack, this value is 1.

Negative integer –

—

The absolute value of the negative integer is the subcrack ID number to which this tip belongs.

The negative sign indicates that this crack tip is the end of this subcrack, and that this subcrack is a closed polygon. It must be connected to the first tip of this subcrack when the crack front is plotted.

For more information, see "Examples: APOS Usage".

Examples: APOS Usage

The following examples show how APOS values^[4] are applied in several cases for fracture analysis.

The most common situation is that an open crack exists in N crack tips, and all tips are connected into a single subcrack. The APOS values for each tip are:

Tip Index	1	2	3	… …	N-1	N
APOS	1	1	1	1… …1	1	1

For a closed crack without extra subcracks, the APOS values are:

Tip Index	1	2	3	… …	N-1	N^[a]
APOS	1	1	1	1… …1	1	-1

^[a]The value for the N^th tip is -1, meaning that the crack front should be plotted as a closed loop.

The following crack has two subcracks, the first open and the second closed. Assuming M tips on the first subcrack and N tips on the second, the APOS values are:

Tip Index	1	… …	M	M+1	… …	M+N
APOS	1	1	1	2	2	-2

Notes

When a crack tip node is defined, the values associated with the specified node are listed.

Dtype = STTMAX or PSMAX are valid for phantom-node-based XFEM analyses only.

Dtype = CRDX, CRDY, CRDZ, and APOS are valid only in a fatigue/static crack-growth analysis using SMART or singularity-based XFEM.

Dtype = DLTA, DLTN, DLTK, R are valid in a fatigue crack-growth analysis using SMART or singularity-based XFEM. DLTA is also valid for static crack-growth analysis using SMART.

Dtype = UFAC is valid only in a fatigue crack-growth analysis using SMART.

Dtype = KEQV and KANG are valid only in a fatigue/static crack-growth analysis using SMART.

Menu Paths

This command cannot be accessed from a menu.

^[3]Subcracks typically appear in SMART crack-growth analyses and are uncommon in other types of fracture analyses.

^[4]Issuing *GET is an effective way to obtain APOS values.