Optimal design of composite fuselasge frames for progressive failure and energy absorption by genetic algorithms

摘要

This work presents a method for preliminary design of laminated composite fuselage frames with improved crashworthiness. The proposed method uses a progressive failure analysis and genetic algorithms to obtain frame designs optimized for maximum energy absorption. To demonstrate the method, a representative composite fuselage frame is designed for failure at two different load levels. The analytical results indicate that significant increases in crashwor-thiness can be achieved with this frame design methodology.