%0 Journal Article %T Energy Absorption Analysis and Multi-objective Optimization of Tri-layer Cups Subjected to Quasi-static Axial Compressive Loading %J International Journal of Engineering %I Materials and Energy Research Center %Z 1025-2495 %A Ghasemabadian, M. A. %A Kadkhodayan, M. %D 2020 %\ 04/01/2020 %V 33 %N 4 %P 686-693 %! Energy Absorption Analysis and Multi-objective Optimization of Tri-layer Cups Subjected to Quasi-static Axial Compressive Loading %K Multi-Objective Optimization %K Crashworthiness Characteristics %K Tri-layer Deep-drawn Cups %K Energy absorption %R 10.5829/ije.2020.33.04a.20 %X In this paper, the energy absorption features of tri-layer explosive-welded deep-drawn cups subjected to quasi-static axial compressive loading are investigated numerically and experimentally. To produce the cups, tri-layer blanks composed of aluminum and stainless steel alloys were fabricated by an explosive-welding process and formed by a deep drawing setup. The quasi-static tests were carried out at a rate of 2 mm/min. Based on the structure of the tri-layer cups and to calculate the energy absorption features of these structures, a numerical model was established and validated by experimental findings. Moreover, based on a surrogate model and using non-domain sorting genetic algorithm II, multi-objective optimizations were performed on specific energy absorption and initial peak load. The results indicated that the total absorbed energy and mean crush force of the pure stainless steel tri-layer cup were about 5.8 and 5.7 times the values of those for the pure aluminum specimen, respectively. %U https://www.ije.ir/article_106044_5f739f8ea6f7265d35259856d582e29b.pdf