New optimization method for steered fiber composites using the level set method

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...

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Bibliographic Details
Published in:Structural and multidisciplinary optimization 2015-09, Vol.52 (3), p.493-505
Main Authors: Brampton, Christopher J., Wu, K. Chauncey, Kim, H. Alicia
Format: Article
Language:English
Subjects:
Computational Mathematics and Numerical Analysis
Continuous fiber composites
Continuous fibers
Engineering
Engineering Design
Fiber composites
Fiber placement
Optimization
Research Paper
Sensitivity
Theoretical and Applied Mechanics
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Summary: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.
ISSN:1615-147X
1615-1488
DOI:10.1007/s00158-015-1256-6