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FATDEF |
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FATDEF |
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»Click here to display Table of Contents«
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FATDEF |
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FATDEF |
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FATDEF – Elements for Fatigue Analysis
Defines elements, and associated fatigue properties, for consideration in a fatigue analysis.
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FATDEF |
ID |
TOPSTR |
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Optional continuation lines for selecting elements, and associated fatigue properties, using element sets (ELSET)
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ELSET |
ELSID1 |
PFATID1/ PFATSPWID1 |
ELSID2 |
PFATID2/PFATSPWID2 |
ELSID3 |
PFATID3/PFATSPWID3 |
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ELSID4 |
PFATID4/PFATSPWID4 |
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Optional continuation lines for selecting elements and associated fatigue properties through referenced properties (PTYPE)
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PTYPE |
PID1 |
PFATID1/PFATSPWID1 |
PID2 |
PFATID2/PFATSPWID2 |
PID3 |
PFATID3/PFATSPWID3 |
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PID4 |
PFATID4/PFATSPWID4 |
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Optional continuation lines for seam weld fatigue analysis
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FATSEAM |
FATSEAM ID1 |
PFATSMW ID1 |
FATSEAM ID2 |
PFATSMW ID2 |
FATSEAM ID3 |
PFATSMW ID3 |
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FATSEAM ID4 |
PFATSMW ID4 |
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Optional continuation lines for excluding elements using element sets (ELSET)
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XELSET |
XELSID1 |
XELSID2 |
XELSID3 |
XELSID4 |
XELSID5 |
XELSID6 |
XELSID7 |
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XELSID8 |
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Optional continuation lines for excluding individual elements
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XELEM |
XEID1 |
XEID2 |
XEID3 |
XEID4 |
XEID5 |
XEID6 |
XEID7 |
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XEID8 |
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Field |
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ID |
Each FATDEF card must have a unique ID. FATDEF Subcase Information entry may reference this ID. No default (Integer > 0) |
TOPSTR |
Top stress fraction. Elements with combined stress not in this top fraction of each MATFAT group will be screened out and have no results. This field is ignored in fatigue analysis on a transient subcase. Default = blank (100% will be used internally), (0.0 < Real < 1.0) |
ELSET |
Indicates that a list of pairs of ELSET and PFAT/PFATSPW IDs will follow, defining elements, and their associated fatigue properties, for consideration in fatigue analyses where this FATDEF is selected. |
ELSID# |
Element set ID. Elements in this set will be considered in fatigue analyses where this FATDEF is selected. No default (Integer > 0) |
PFATID# |
Fatigue property ID. This is the identification number of a PFAT entry, which indicates the fatigue property used by the preceding elements defined by ELSID# or PID#. |
PFATSPWID# |
Fatigue property ID for spot weld fatigue analysis. This is the identification number of a PFATSPW entry, which indicates the fatigue property used by the preceding elements defined by ELSID# or PID#. |
PTYPE |
Indicates that a list of pairs of property IDs of type PTYPE and PFAT/PFATSPW IDs will follow; defining elements and their associated fatigue properties for consideration in fatigue analyses where this FATDEF is selected (Comment 2). |
PID# |
Property ID. This is the identification number of a property entry corresponding to the specified PTYPE field. Elements referencing any property with this ID will be considered in fatigue analyses where this FATDEF is selected (Comment 3). No default (Integer > 0) |
FATSEAM |
Indicates that the list of pairs of FATSEAM ID’s and PFATSMW ID’s are to follow and these will be used for seam weld fatigue analysis. |
FATSEAM ID# |
References a FATSEAM Bulk Data Entry that contains parameters and property identification information for seam weld fatigue analysis. |
PFATSMW ID# |
Fatigue property ID for seam weld fatigue analysis. This is the identification number of a PFATSMW entry, which indicates the fatigue property used by the preceding elements defined by ELSID# or PID#. |
XELSET |
Indicates that IDs of elements sets excluded from fatigue analysis follow. |
XELSID# |
Element set ID. Elements in these sets will be excluded from fatigue analyses where this FATDEF is selected. No default (Integer > 0) |
XELEM |
Indicates that IDs of elements excluded from fatigue analysis follow. |
XEID# |
Element ID. These elements will be excluded from fatigue analyses where this FATDEF is selected. No default (Integer > 0) |
Comments
| 1. | At least one of the optional continuation lines ELSET or PROP must be present. |
| 2. | PTYPE can be set as one of PSHELL, PSOLID, PWELD, PBAR, PBARL, PBEAM, or PBEAML to represent that the corresponding property ID’s (PID# fields) are to follow. |
| Note: | Tthat PWELD, PBAR, PBARL, PBEAM, or PBEAML references for PTYPE field are supported only for spot weld fatigue analysis. Additionally, for spot weld fatigue analysis, PFATSPWID# fields should reference corresponding PFATSPW entries. |
| 3. | The PID# field should reference the property entry of the same type as the corresponding PTYPE. |
| 4. | This card is represented as a loadcollector in HyperMesh. |
See Also: