Optimization of Graded Metallic Foam Subjected to Impulsive Loading through DOE Approach

Abstract

The purpose of this study is to use Design of Experiment (DOE) method to optimize the design of graded metallic foam under impulsive loading. Using aluminum foams with different densities the configuration of the aluminum layers is changed whilst keeping the sandwich structure weight constant. The effects of thickness of steel face sheets and the distance of impulse source were considered. The finite element trial models were designed using the multi-level factorial Design of Experiment method and the results were studied using Analysis of Variance. The statistical models were able to predict the relationship between layer configuration as independent variable, and maximum permanent deflection and internal energy as response variables. The proximity of predicted results and finite element results provides evidence the success of the DOE method in deriving predictive models.