The following lists provide a history of changes to MTK.
New Features/Enhancements
- Add load_extse to import a Nastran external superelement from OP4
- Make svd_H more robust to ill-conditioning
- Enhance spatial_filter to be more robust
Bug Fixes
- Fix TIER#2548, 2552, 2564, 2567
New Features/Enhancements
- Add selectASET documentation
- Add new function constraint_shape_expansion to back-expand functions from a given set of constraint shapes
- Add function frf_svd to calculate basis vectors to estimate FRF using singular value decomposition.
Bug Fixes
- Fix plot_shaker_locations to correctly display shaker locations at nodes with cylindrical or spherical coordinate systems
- Fix TIER#2387
New Features/Enhancements
- Minor updates to shaker_locator output and documentation to be clear about the coordinate system in which the direction cosines are defined
Bug Fixes
- Fix plot_shaker_locations to correctly display the shaker orientations based on the coordinate system in which orientations are defined
- Fix TIER reports 1803, 2020, 2077, and 2078
New Features/Enhancements
- New function invert_TAM to swap the ASET and OSET degrees of freedom in a TAM
- Add a sheet to report_tam_xml containing the Ogg matrix, and add the maximum off-diagonal value to the frequency sheet
- Add capability to optimize sensors using self-orthogonality (Ogg) instead of pseudo-orthogonality (POgg) in downselect_sensors
Bug Fixes
- Fix bug in plot_shaker_locations where in some cases the directions were plotted incorrectly
- Fix TIER reports 1803, 2020, 2077, and 2078
New Features/Enhancements
- New function svd_T to extract Operating Deflection Shapes from time histories using singular value decomposition
- Add capability to compute mass-weighted Complex Mode Indicator Function to cmif and qmif
- Add error metric of the maximum absolute value of the off-diagonals of POgg in downselect_sensors
- New functions shp2TAM and shp2TAMexp to create back-expansion matrices from analysis mode shapes
Bug Fixes
- Fix TIER reports 1719, 7120, 1734, 1737, 1748, 1764, 1790, 1792, 1793, 1802, and 1821
New Features/Enhancements
- New function downselect_sensors to select optimal DOF for a modal test
- New function downselect_xml to export the output of downselect_sensors to an XML file
- New function effmass to compute effective mass fractions for a set of modes
- report_tam_xml and report_test_xml now optionally output effective mass tables
Bug Fixes
- Fix TIER reports 1586, 1589, and 1698
New Features/Enhancements
- Enhance report_test_xml to highlight the cells in each row of the Otg and MACtg worksheets corresponding to the modes used in the RSS calculations
- Clean up orthogonality and MAC matrix worksheets in the XML files generated by report_tam_xml and report_test_xml
Bug Fixes
- Fix some bugs in the POgg table display from report_tam_xml
- Minor documentation updates and bugfixes
- Fix TIER report 1446
New Features/Enhancements
- New function svd_H to calculate singular value shapes from FRF matrix.
Bug Fixes
- Fix bug with report_tam_xml, report_test_xml, and report_energy_xml where the function would attempt to write to '*.xml' when no filename is supplied
- Fix TIER report 1467
New Features/Enhancements
- New function fem_test_rss that maps test modes to the best set of analysis modes
- New function correlation_table that creates a correlation table between test and analysis modes using fem_test_rss
- report_test_xml now uses fem_test_rss and produces extra cross-orthogonality output. It also accepts a new input argument, 'percent', to specify the frequency percentage to use when considering which modes are closely spaced.
Bug Fixes
- Fix TIER report 1432
- Add missing modesort function to the release
- Other minor bug fixes and documentation updates
New Features/Enhancements
- Make sure MAC and orthogonality outputs from report_test_xml and report_tam_xml are scaled consistently
Bug Fixes
- Fix TIER report 1134
- Other minor bug fixes and documentation updates
New Features/Enhancements
- report_test_xml now allows you to specify the MAC and orthogonality thresholds for color-coding
- report_tam_xml now allows you to specify the MAC and orthogonality thresholds for color-coding
- report_test_xml, report_tam_xml, and report_energy_xml now have the option to not export output to an XML file
- New function uimoveresp to animate move response shapes given a FEM and functions
Bug Fixes
- Fix TIER reports 1226, 1227, 1249, 1252
- Other minor bug fixes and documentation updates
Bug Fixes
- Fix TIER report 1160
- Other minor bug fixes and documentation updates
New Features/Enhancements
- TAMeig now handles TAMs with SPOINTs.
- New function fn2pos to turn time histories and FRF to positive by switching polarities
- New function summary_coherence to calculate the weighted coherence for a given set of FRF and Coherence.
Bug Fixes
- Fix TIER reports 1073, 1110, 1130
- Other minor bug fixes and documentation updates
New Features/Enhancements
- backexp has a new 'noaugment' option, and the help has been enhanced
- New function plot_shaker_locations to graphically display the shaker locations returned by shaker_locator
Bug Fixes
- Fix TIER reports 858, 976, 977, 1007
- Other minor bug fixes and documentation updates
New Features/Enhancements
- backexp can now handle any function type as input
- New TAM development cookbook to guide the user through the process of creating a TAM
- load_tam now supports the superelement-based TAM matrix approach (KAAX, MAAX, and MUG1) documented here.
Bug Fixes
- Fix TIER reports 831, 835, 860, 862, 945, 951
- Other minor bug fixes and documentation updates
New Features/Enhancements
- Improve performance of spatial_filter
Bug Fixes
- Fix TIER report 787
- Other minor bug fixes and documentation updates
New Features/Enhancements
- minor updates
Bug Fixes
- Fix TIER report 730, 746
- Other minor bug fixes and documentation updates
New Features/Enhancements
- Added load_tam, TAMeig, ctrace2aset, ctrace2partn, ctrace2uset, drive_points, ref_swap
- Moved all of the MIF functions to the imat/examples directory so they are all in the same place
Bug Fixes
- Fix TIER report 567, 633, 624, 649, 675, 692
- Other minor bug fixes and documentation updates
New Features/Enhancements
- cmif now supports tracking
- Moved all of the MIF functions to the imat/examples directory so they are all in the same place
- report_tam_xml can now handle the case where no TAM matrices are supplied
- report_test_xml can now handle the case where the two supplied shapes can have different DOF. Modify RSS terms for MAC calculations.
Bug Fixes
- Fix TIER reports 536 and 611
- Other minor bug fixes and documentation updates
New Features/Enhancements
Bug Fixes
- Fix TIER report 487. Make Corrected RSS and Corrected RS solution more stable in report_test_xml
- Other minor bug fixes
New Features/Enhancements
- Documentation overhaul.
- frfsyn now accepts a list of frequencies in addition to an imat_fn as input
- report_test_xml and report_tam_xml now support a subset of input arguments
Bug Fixes
- Minor bug fixes
New Features/Enhancements
- Minor updates
Bug Fixes
- Minor bug fixes
New Features/Enhancements
- Minor updates
Bug Fixes
- Minor bug fixes
New Features/Enhancements
- Minor updates
Bug Fixes
- Minor bug fixes
New Features/Enhancements
- Initial release