Design and Manufacturing of Aerospace Composite Structures, State-of-the-Art Assessment

Energy-based yield criterion for PMMA from large-scale molecular dynamics simulations

“…Such an understanding together with quantitative computational models are not only relevant from the point of view of basic science but have the potential to help design new materials with improved properties and impact a wide variety of established industries like aerospace 1 and electronics 2 as well as emerging technologies like micro-electromechanical systems. 3 The mechanical response of crystalline materials is well understood in terms of processes involving the motion of defects including dislocations, grain boundaries and vacancies and such understanding has enabled the development of physics-based, predictive, models for these materials.…”

Three-Dimensional Numerical Simulation of Random Fiber Composites With High Aspect Ratio and High Volume Fraction

“…For circular cross section filaments, the calculated x-y plane distance from the new filament's center position to the center position of the existing filament, should fit the criterion «^criterion < 2 X r -|-d",i" (1) where d"i" is the preset minimum tolerable distance between any two filaments and r is the filament's radius. Following collision detection criterion of Eq.…”

Manufacturing processes for composite materials and components for aerospace applications

“…The performance advantages of composites in terms of stiffness and strength to weight had to be weighed against increased cost of manufacture. There has been therefore an increasing focus on reducing the cost of composite parts by reducing the costs of both materials and manufacturing processes [4].…”