Abstract

Continuous curvilinear variable stiffness (CCVS) is presented as a novel solution to improve the load carrying capacity of a fuselage panel with a cutout. The CCVS technique allows for the tow paths to curve around cutouts of arbitrary geometry with initial fiber angle and geometry as design inputs. An optimum CCVS design is generated using a genetic algorithm method coupled with a finite element model in NASTRAN and the results are compared with those obtained using a quasi-isotropic laminate. The optimized CCVS laminate is found to improve the load carrying capacity compared with the quasi-isotropic design by 57%.

中文翻译：

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连续曲线可变刚度设计，用于提高带有切口的面板的强度

摘要

连续曲线变刚度 (CCVS) 作为一种新颖的解决方案被提出来提高带有切口的机身面板的承载能力。CCVS 技术允许丝束路径围绕任意几何形状的切口弯曲，并将初始纤维角度和几何形状作为设计输入。使用遗传算法方法和 NASTRAN 中的有限元模型生成最佳 CCVS 设计，并将结果与​​使用准各向同性层压板获得的结果进行比较。与准各向同性设计相比，优化后的 CCVS 层压板的承载能力提高了 57%。