Target Modes

 

The next step is to assign the target modes for each FEM configuration. This can be done by highlighting the desired modes in the mode table and pushing the add mode button (). The selected modes will be shown in the target mode table. Target modes must be selected for all FEM configurations before the GA can be executed. Increase the weighting factor to make a particular mode shape more important for the selection of accelerometer locations. The weighting factor can be changed by highlighting the desired mode(s) in the target mode table and entering the desired weighting factor in the text box at the bottom of the table and pushing the Apply button. To deselect a target mode highlight the mode in the target mode table and push the remove mode button (). Remember that the candidate DOF TAM mode numbering and frequencies are shown in the GA GUI and these may not be exactly the same as the full FEM mode numbers and frequencies[4].