Full Vehicle MDO
This example illustrates a realistic application of Multidisciplinary Design Optimization (MDO) and concerns the coupling of the crash performance of a full vehicle with torsional stiffness and mode frequency. LS-DYNA is used for explicit crash and implicit NVH and eigenvalue simulations.
In a first step, a linear sensitivity analysis is performed to identify the variables with high influence on the responses for each discipline. For both crash load cases 60 and for the NVH load cases 75 LS-DYNA simulations were performed. Since the number of variables is relatively high (27 for crash, 32 for stiffness/eigenvalues) a non-linear sensitivity analysis would require significantly more simulations.
This example illustrates a realistic application of Multidisciplinary Design Optimization (MDO) and concerns the coupling of the crash performance of a full vehicle with torsional stiffness and mode frequency. LS-DYNA is used for explicit crash and implicit NVH and eigenvalue simulations.