Abstract

Reinforcement of fibrous composites by stiff particles embedded in the matrix offers the potential for simple, economical functional grading, enhanced response to mechanical loads, and improved functioning at high temperatures. Here, we consider laminated plates made of such a material, with spherical reinforcement tailored by layer. The moduli for this material lie within relatively narrow bounds. Two separate moduli estimates are considered: a "two-step" approach in which fibers are embedded in a homogenized particulate matrix, and the Kanaun-Jeulin (Kanaun, S.K., Jeulin, D., 2001. Elastic properties of hybrid composites by the effective field approach. Journal of the Mechanics and Physics of Solids 49, 2339-2367) approach, which we re-derive in a simple way using the Benveniste (1988) method. Optimal tailoring of a plate is explored, and functional grading is shown to improve the performance of the structures considered. In the example of a square, simply supported, cross-ply laminated panel subjected to uniform transverse pressure, a modest functional grading offers significant improvement in performance. A second example suggests superior blast resistance of the panel achieved at the expense of only a small increase in weight.

Original languageEnglish
Pages (from-to)2136-2150
Number of pages15
JournalInternational Journal of Solids and Structures
Volume46
Issue number10
DOIs
StatePublished - May 15 2009

Keywords

  • Ashby method for materials selection
  • Blast loading
  • Composite materials
  • Micromechanics
  • Optimization of laminated composites

Fingerprint

Dive into the research topics of 'Micromechanics and structural response of functionally graded, particulate-matrix, fiber-reinforced composites'. Together they form a unique fingerprint.

Cite this