New optimization method for steered fiber composites using the level set method
New optimization method for steered fiber composites using the level set method
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DOI：
10.1007/s00158-015-1256-6
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发表时间：
2015-09-01
影响因子：
3.9
通讯作者：
Kim, H. Alicia
中科院分区：
文献类型：
--
作者：
Brampton, Christopher J.;Wu, K. Chauncey;Kim, H. Alicia
先进纤维铺放（AFP）复合材料制造技术提供了一种针对复杂负载环境定制复合纤维并显着提高整体结构效率的方法。本文介绍了一种利用水平集方法对连续变化光纤路径进行优化的新方法。纤维的路径由恒定水平集函数值定义，描述了一系列连续的等距纤维路径。导出了结构柔度对纤维路径水平集函数定义变化的灵敏度。灵敏度用于优化水平集定义的光纤路径，以最小化结构顺应性，同时保持连续的光纤路径并产生可以使用AFP制造的解决方案。在三个数值研究中证明了优化方法。
Advanced fiber placement (AFP) composite manufacturing technology offers a means to tailor composite fibers for complex loading environments and significantly improve the overall structural efficiency. This paper introduces a new method to optimize the continuously varying fiber paths for AFP using a level set method. The paths of the fibers are defined by constant level set function values, describing a series of continuous equally spaced fiber paths. The sensitivity of the structural compliance to a change in level set function definition of the fiber path is derived. The sensitivities are used to optimize the level set defined fiber paths to minimize structural compliance, while maintaining the continuous fiber paths and producing a solution that can be manufactured using AFP. The optimization method is demonstrated in three numerical studies.