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Steered fiber paths for improved in-plane compressive response of aerostructural panels: Experimental studies and numerical modeling

机译：Steered fiber paths for improved in-plane compressive response of aerostructural panels: Experimental studies and numerical modeling

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摘要

Results for the manufacturing and structural testing of steered fiber composite panels are presented in this paper. A detailed algorithm and implementation of a surrogate model based optimization procedure in conjunction with a global optimizer such as multi-objective Genetic Algorithm (GA) was introduced for steered fiber composite panels in previous studies by the authors . Three designs were chosen based on the criteria that the total gain in mass be less than 10%, the decrease in global stiffness capped at 10% and more than 25% increase in buckling load compared to a unidirectional laminate. By necessity, the optimal designs incorporated manufacturing induced unintended deviations also known as manufacturing signature(MS). Details of a pixelated Finite Element model to capture as-manufactured behavior of these panels including initial curvature and thickness variations are discussed in detail, and the numerical results are compared against results from the experimental study.

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