Continuously Fiber Path Optimization Based on Gaussian Distribution Function with Convergent Material Orientation

Abstract

Abstract How to optimize the fiber placementpath is of great significance for improving the mechanical properties of composite material. Fiber orientation discretization is regarded as a common means to solve the above problem, and themethod with multivariate is generally adopted to find the optimal fiber angle. However, the cost is high, and eventually there are still multiple discrete angles as the result, which cannot meet the ultimate requirements of fiber orientation convergence and path continuity. Therefore, an optimization method of fiber placement path based on Gaussian distribution function is proposed, where only one variable is used to select the optimized angle among any number of discrete placement angles. By adjusting several parameters in the Gaussian distribution function, the fiber orientation is converged, and the path continuity is realized by the spatial filtering. New method can be used to avoid the multiple local minima problem found in fiber orientation discretization process. Numerical experiments are carried out to optimize the fiber placement path of aerofoil skin and rocket interstagesection skin respectively, which shows the efficiency of the proposed method.