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

Christopher J. Brampton, K. Chauncey Wu, H. Alicia Kim

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)493-505
Number of pages13
JournalStructural and Multidisciplinary Optimization
Volume52
Issue number3
Early online date14 May 2015
DOIs
Publication statusPublished - 30 Sep 2015

Keywords

  • Compliance minimization
  • Fiber-matrix composite
  • Fibre path optimization
  • Level set method

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