Perpustakaan Digital ITB

Buckling patterns have been observed on the side wall structure of the passenger train car body made by PT INKA. To address this issue, an optimization of buckling performance was conducted using the Taguchi method and constrained Bayesian optimization (CBO). Buckling performance was quantified based on the out-of-plane buckling deformation obtained through finite element simulations. These results were then analyzed using the Taguchi method and CBO. Using the Taguchi method, it was concluded that, among the five parameters considered, two have significant effect on the buckling performance. Validation results confirm that the optimum configuration obtained using the Taguchi method leads to improved buckling performance. Using CBO, it was concluded that the optimum set of parameters were successfully obtained which resulted in the smallest mass ratio while keeping the inter-spot-weld buckling deformation under a predefined constraint value.