Advances in Mechanical Engineering • Vol 15 • No 2
Improved NSGA-II and its application in BIW structure optimization
February 2023 • Xiao Wu, Zhiyong Chen, Tao Liu, H. J. Song, Zhiwei Wang, Wenku Shi
Based on the crowding distance algorithm of Non-Dominated Sorting Genetic Algorithm-II (NSGA-II), three improved algorithms are proposed: side length optimization strategy, diagonal optimization strategy, center optimization strategy. Zero-Ductility Transition (ZDT) series functions and Diode-Transistor Logic with Zener diode (DTLZ) series functions are used to calculate and compare the convergence and diversity of three improved algorithms and NSGA-II. The center optimization strategy based NSGA-II is confirmed t…