Design Sensitivity of Hat-Stiffened Composite Panels

摘要

Sizing of hat-stiffened composite panels is challenging because of the broadrndesign hyperspace in several geometric and material parameters available to therndesigner. Design tasks can be simplified if parameter sensitivity analysis is performedrna priori and design data is made available in terms of a few important parameters. Inrnthis paper, design sensitivity analysis is performed using finite element analysis (FEA)rnand analytical solution models. Experimental testing of a hat-stiffened panel isrnperformed to validate the FEA and idealized analytical solutions. This is an attemptrnto initiate a structural architecture methodology to speed the development andrnqualification of composite aircraft that will reduce design cost, increase thernpossibility of content reuse, and improve time-to-market. In particular, we comparernFEA results with analytical solutions and develop a design methodology that willrnallow extensive reuse of parametric hat-stiffened panels in the design of compositesrnstructural components. This methodology will be utilized in developing a library ofrncommonly used, built-in, composite structural elements in design of aircraft.