This page introduces the Universal File Format that is one of the ways to import and export measurements to ARTeMIS Modal. It is used both for Operational Modal Analysis and Experimental Modal Analysis projects. Click here for more information about the various features and version of ARTeMIS Modal.
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Click here for more information about the Experimental Modal Analysis.
This is the Universal File Format data set used for importing/exporting the data of a transducer sitting in a specific node and pointing in a specific direction. In the case of ARTeMIS Extractor it is the raw time series of a transducer. For more information see e.g. WEB-site of the Structural Dynamics Research Laboratory at University of Cincinnati, Ohio.
Record 1: Format(80A1)
| Field 1 | ID Line 1. |
Note: ID Line 1 is generally used for the function description.
Record 2: Format(80A1)
| Field 1 | ID Line 2. |
Record 3: Format(80A1)
| Field 1 | ID Line 3. |
Note: ID Line 3 is generally used to identify when the function was created. The date is in the form DD-MMM-YY, and the time is in the form HH:MM:SS, with a general Format(9A1,1X,8A1).
Record 4: Format(80A1)
| Field 1 | ID Line 4. |
Record 5: Format(80A1)
| Field 1 | ID Line 5. |
Record 6: Format(2(I5,I10),2(1X,10A1,I10,I4))
DOF Identification
| Field 1 | Function Type
0: General or Unknown 1: Time Response (Must be used) 2: Auto Spectrum 3: Cross Spectrum 4: Frequency Response Function 5: Transmissibility 6: Coherence 7: Auto Correlation 8: Cross Correlation 9: Power Spectral Density (PSD) 10: Energy Spectral Density (ESD) 11: Probability Density Function 12: Spectrum 13: Cumulative Frequency Distribution 14: Peaks Valley 15: Stress/Cycles 16: Strain/Cycles 17: Orbit 18: Mode Indicator Function 19: Force Pattern 20: Partial Power 21: Partial Coherence 22: Eigenvalue 23: Eigenvector 24: Shock Response Spectrum 25: Finite Impulse Response Filter 26: Multiple Coherence 27: Order Function |
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| Field 2 | Function Identification Number | |
| Field 3 | Version Number, or sequence number | |
| Field 4 | Load Case Identification Number
0: Single Point Excitation |
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| Field 5 | Response Entity Name (“NONE” if unused) | |
| Field 6 | Response Node (Must be present in the associate data set #15) | |
| Field 7 | Response Direction
0: Scalar 1: +X Translation 4: +X Rotation (Not allowed) -1: -X Translation -4: -X Rotation (Not allowed) 2: +Y Translation 5: +Y Rotation (Not allowed) -2: -Y Translation -5: -Y Rotation (Not allowed) 3: +Z Translation 6: +Z Rotation (Not allowed) -3: -Z Translation -6: -Z Rotation (Not allowed) |
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| Field 8 | Reference Entity Name (“NONE” if unused) | |
| Field 9 | Reference Node | |
| Field 10 | Reference Direction (same as field 7) |
Note: Fields 8, 9, and 10 are only relevant if field 4 is zero.
Record 7: Format(3I10,3E13.5)
Data Form
| Field 1 | Ordinate Data Type
2: Real, single precision 4: Real, double precision 5: Complex, single precision (Not allowed) 6: Complex, double precision (Not allowed) |
|
| Field 2 | Number of data pairs for uneven abscissa spacing, or number of data values for even abscissa spacing | |
| Field 3 | Abscissa Spacing
0: uneven (Not allowed) 1: even (no abscissa values stored) |
|
| Field 4 | Abscissa minimum (0.0 if spacing uneven) | |
| Field 5 | Abscissa increment (0.0 if spacing uneven) | |
| Field 6 | Z-axis value (0.0 if unused) |
Record 8: Format(I10,3I5,2(1X,20A1))
Abscissa Data Characteristics
| Field 1 | Specific Data Type
0: unknown 1: general 2: stress 3: strain 5: temperature 6: heat flux 8: displacement 9: reaction force 11: velocity 12: acceleration 13: excitation force 15: pressure 16: mass 17: time (Must be used) 18: frequency 19: rpm 20: order |
|
| Field 2 | Length units exponent | |
| Field 3 | Force units exponent | |
| Field 4 | Temperature units exponent
Note: Fields 2, 3 and 4 are relevant only if the Specific Data Type is General, or in the case of ordinates, the response/reference direction is a scalar, or the functions are being used for nonlinear connectors in System Dynamics Analysis. |
|
| Field 5 | Axis label (“NONE” if not used) | |
| Field 6 | Axis units label (“NONE” if not used) |
Note: If fields 5 and 6 are supplied, they take precedence over program generated labels and units.
Record 9: Format(I10,3I5,2(1X,20A1))
Ordinate (or ordinate numerator) Data Characteristics
Record 10: Format(I10,3I5,2(1X,20A1))
Ordinate Denominator Data Characteristics
Record 11: Format(I10,3I5,2(1X,20A1))
Z-axis Data Characteristics
Note: Records 9, 10, and 11 are always included and have fields the same as record 8. If records 10 and 11 are not used, set field 1 to zero.
Record 12:
Data Values
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Ordinate |
Abscissa |
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General Note: ID lines may not be blank. If no information is required, the word “NONE” must appear in columns 1 through 4.
