TY - GEN

T1 - Predicting the elastic properties of composite materials

AU - Davis, L. C.

AU - Chen, J.

AU - Thorpe, M. F.

PY - 1992/12/1

Y1 - 1992/12/1

N2 - It is shown that for many composites an accurate method to predict elastic moduli is to average the upper and lower (third-order) bounds. Good agreement with experiment is obtained for the metal-matrix composite Al/SiC. The elastic properties of random fiber-aligned composites have been calculated using a digital-image-based simulation with application to the glass fiber/epoxy system and to rigid inclusions. Comparison to Hashin-Shtrikman and third-order bounds has been made. In three dimensions, the finite-element method has been used to study ordered composites. It has been found that for rigid inclusions (voids), the lower (upper) bound on the bulk modulus provides a good estimate except near the critical composition, φc, where the moduli for ordered rigid particles diverge as (φ-φc)-1/2 in 2D and as -ln(φ-φc) in 3D.

AB - It is shown that for many composites an accurate method to predict elastic moduli is to average the upper and lower (third-order) bounds. Good agreement with experiment is obtained for the metal-matrix composite Al/SiC. The elastic properties of random fiber-aligned composites have been calculated using a digital-image-based simulation with application to the glass fiber/epoxy system and to rigid inclusions. Comparison to Hashin-Shtrikman and third-order bounds has been made. In three dimensions, the finite-element method has been used to study ordered composites. It has been found that for rigid inclusions (voids), the lower (upper) bound on the bulk modulus provides a good estimate except near the critical composition, φc, where the moduli for ordered rigid particles diverge as (φ-φc)-1/2 in 2D and as -ln(φ-φc) in 3D.

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M3 - Conference contribution

AN - SCOPUS:0026997846

SN - 0877629978

T3 - Proceedings of the American Society for Composites

SP - 339

EP - 348

BT - Proceedings of the American Society for Composites

PB - Publ by Technomic Publ Co Inc

T2 - Proceedings of the 7th Technical Conference of the American Society for Composites

Y2 - 13 October 1992 through 15 October 1992

ER -