Advances in the optimization design study for aircraft composite structure

With the increasing requirements of aircraft design, the service condition becomes more and more harsh, development for new material is imminent, and composite material has been widely used in the design and manufacture in the modern aircraft structure by virtue of high specific strength, high specific stiffness, fatigue resistance, and corrosion resistance. The advantage to be designed of composite material provides designers with more broad space for development of its potential abilities; therefore, the optimal design of the composite material gradually is aroused heated discussion among researchers both domestic and abroad. On the issue that optimization theory for composite materials at domestic and abroad, in this paper, the author introduce the development process of composite structure optimization design, and systematically reviews the achievements that researchers have obtained currently. The main contents include the safety factor-based design optimization, reliability-based design optimization and robust optimization design, elaborate the application of the above methods in composite structure optimization design region, discuss the relations among the three optimization design theories, and then the current structure optimization design of the composites presented some problems and the future development direction is analyzed.