Summary of MTK Features
Here is a summary of the features of the MTK toolbox:
- Mode shape extraction utilities
- Polyreference GUI (afpoly)
- Enhanced FRF functions (efrf_cmif, efrf_mmif, efrf_fit)
- Single reference extraction methods (ind_frf_fit, ind_frf_fit_c)
- Operating Deflection Shape extraction methods (svd_H, svd_T)
- FRF synthesis
- All modal parameters known (shapes, modal mass, modal damping, natural frequency; frfsyn)
- Modal mass unknown (shapes, damping, natural frequency known; frf_fit)
- Modal mass, shapes unknown (damping, natural frequency known; ind_frf_fit, ind_frf_fit_c)
- Single mode (efrf_fit)
- Estimate FRF using SVD (frf_svd)
- Test Mode Shape Verification
- Independence Checks: Test self-orthogonality, self-MAC (ortho)
- Completeness Checks: Test-FEM cross-orthogonality, cross-MAC, Comparison Tables (ortho, comparison_table), Correlation Tables (correlation_table, fem_test_rss)
- Sort modes from multiple extractions to generate final mode set (modesort)
- Test summary xml files (report_test_xml)
- Advanced verification tools
- Grid point energy checks (report_energy_xml)
- Test/FEM modal coefficient checks (e_comac_xml)
- Test data quality checks (summary_coherence)
- Supplemental Routines
- Remove bad sensor from TAM (Test-Analysis-Model) matrices (further_guyan)
- Back expand mode shapes to test display model for viewing (backexp)
- Create back-expansion matrices from analysis mode shapes (shp2TAM, shp2TAMexp)
- Write shapes into NASTRAN format (shp2spc)
- Write ctraces into NASTRAN format (ctrace2aset, ctrace2uset, ctrace2partn)
- Rename mislabeled DOF in imat_fn (rename_dof)
- Return all drive point FRFs in a given imat_fn (drive_points)
- Swap reference and response coordinates in an imat_fn (ref_swap)
- Turn time histories and FRF to positive by switching polarities (fn2pos)
- Back-expand functions from constraint shapes (constraint_shape_expansion)