Analytical Studies on Auxiliary Box in Composite Fin of Civil Aircraft and Validation of Structural Design by Optimization

摘要

A need is aroused in recent days for a separate space to house the actuators of control surface of wing and empennage structures of civil aircraft. The creation of an independent space outside main structural box is understood as auxiliary box structure. The space for auxiliary box is created by providing an auxiliary spar member between front and rear spars. This auxiliary spar is provided based on technical evidence that mere provision of spar should not make main structural box to reduce its bending stiffness and torsional rigidity. Various analytical studies have been carried out to find the optimum location of spars that resulted in least displacement with least possible mass of the fin structure. The present studies have been carried out on a composite fin structure of civil aircraft which had been previously designed for a given loading and geometry through classical approach. The structural optimization also carried out on a few fin models to see the difference in the mass obtained from structural optimization with that of mass of initial design. It is seen that there is good agreement between optimized mass and that mass of initial design through classical method.udConf Name: International Conference On Trends in Product Life Cycle, Modeling, Simulation and Synthesis PLMSS-2014 ud