Candidate Set TAM Verification

 

The next step is to verify that that each full FEM configuration’s modes are accurate when represented by the candidate set DOF. This was performed in truck_wload_irke_tam.dat and truck_irke_tam.dat, which use the ortho alter to compare the candidate set TAM to the full FEM. Matlab functions read_tam.m and rpt_tam.m can be used to read the resulting Nastran data and generate a comma-separated summary table of each FEM configuration, as shown in Table 2. The summary table shows the FEM modes/TAM mode matching, performs a frequency comparison, and also summarizes the Pseudo-Orthogonality and Cross-Orthogonality matrices. It is critical that the candidate set DOF representation of each FEM is very accurate because the candidate set TAM representation is what is carried into the Genetic Algorithm.

 

Table 2. Accuracy of each candidate set TAM for each FEM configuration