Experimental Study and Optimization of Dynamic Response of Polymer-Coated Metal Plates Subjected to Impact Loading Using Response Surface Methodology

One of the main aims of the current study is the experimental investigation and optimization of the dynamic response of polymer-coated aluminum plates under impulsive load. In the experimental study, the effect of several important parameters on the free forming of these structures under gas mixture detonation load, including the effect of aluminum plate thickness and polymeric coating, as well as the effect of applied load on the maximum permanent transverse deflection were investigated. In the optimization section, Design Expert Software was used to investigate the simultaneous effect of the mentioned parameters on the plastic deformation of the structure. In this software, the effect of independent parameters such as metal sheet thickness, polymer-coated thickness and loading impulse on the deflection of the two-layer structure has been investigated using the response surface method. Accordingly, the p-value for the model was less than 0.05, which means that the model is significant. The value of R2 is also equal to 0.9980. The results indicate that the presented model is suitable for these experimental data. The values obtained from the prediction of the model are consistent with the experimental results. Optimal conditions for the minimize deflection of the two-layer structure were also determined and tested experimentally. The result indicates that the prediction of the regression model and experimental data have a good agreement.