MULTIPHASE MATERIAL OPTIMIZATION FOR FIBER REINFORCED COMPOSITES CONSIDERING STRAIN SOFTENING

• KATO Junji

  東北大学 大学院工学研究科土木工学専攻

• RAMM Ekkehard

• TERADA Kenjiro

  東北大学 大学院工学研究科土木工学専攻

• KYOYA Takashi

  東北大学 大学院工学研究科土木工学専攻

Bibliographic Information

Other Title

• 繊維複合材料のひずみ軟化を考慮した多層材料最適化手法の提案

Abstract

 The present paper addresses an optimization strategy of textile fiber reinforced concrete (FRC) with emphasis on its special failure behavior. Since both concrete and fiber are brittle materials, a prominent objective for FRC structures is concerned with the improvement of structural ductility, which may be defined as energy absorption capacity. Despite above unfavorable characteristics, the interface between fiber and matrix plays a substantial role in the structural response. This favorable 'composite effect' is related to material parameters involved in the interface and the material layout on the small scale level. Therefore the purpose of the present paper is to improve the structural ductility of FRC at the macroscopic level applying an optimization method with respect to significant material parameters at the small scale level. The method discussed is based on multiphase material optimization. This methodology is extended to a damage formulation. The performance of the proposed method is demonstrated in a series of numerical examples; it is verified that the structural ductility can be considerably improved.

Journal

• Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

  Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 67 (1), 39-53, 2011

  Japan Society of Civil Engineers

Keywords

• multiphase material optimization
• material nonlinearity
• fiber reinforced composites

Details

• CRID: 1390282680326069632
• NII Article ID: 130004557141
• DOI: 10.2208/jscejam.67.39
• ISSN: 21854661
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed