ANZIAM J. 47(EMAC2005) pp.C432--C445, 2006.
A two way particle mapping for calculation of the shear modulus of a spherical inclusion composite with inhomogeneous interphase
N. Lombardo |
Abstract
Based on the Mori--Tanaka method and a replacement scheme, a pair of coupled first order differential equations which model the shear modulus of a particulate composite with inhomogeneous interphase are derived. However, the results derived are not exact since the Mori--Tanaka method is not exact for the shear problem. An improved model is therefore proposed which utilises the generalised self consistent scheme for a spherical inclusion that is surrounded by a hypothetical homogeneous interphase layer. To find the properties of this hypothetical interphase layer a mapping of a homogeneous particle onto a two phase composite is utilised. The results are then presented for a simple power law profile and are shown to be consistent with the conclusions of Shen and Li [Int. J. Solids and Struct., 40, 2003, 1393--1409].
Download to your computer
- Click here for the PDF article (218 kbytes) We suggest printing 2up to save paper; that is, print two e-pages per sheet of paper.
- Click here for its BiBTeX record
Authors
- N. Lombardo
- School of Mathematical and Geospatial Sciences, RMIT University, Melbourne, Australia. mailto:s9508641@student.rmit.edu.au
Published December 15, 2006. ISSN 1446-8735
References
- Shen, L. and Li, J. Effective elastic moduli of composites reinforced by particle or fiber with an inhomogeneous interphase. International Journal of Solids and Structures 40 2003, 1393--1409.
- Weng, G. J. Some elastic properties of reinforced solids, with special reference to isotropic ones containing spherical inclusions. International Journal of Engineering and Science 22, 1984, 845--856.
- Mori, T., Tanaka, K. Average stress in matrix and average elastic energy of materials with misfitting inclusions. Acta Metallurgica 21, 1973, 571--574.
- Christensen, R. M., Lo, K. H. Solutions for the effective shear properties in three phase sphere and cylinder models. Journal of the Mechanics and Physics of Solids 27, 1979, 315--330.
- Lombardo, N., Ding, Y. Effect of inhomogeneous interphase on the bulk modulus of a composite containing spherical inclusions. Proceedings of the 4th Australasian Congress on Applied Mechanics, 2005.
- Qiu, Y. P., Weng, G. J. Elastic moduli of thickly coated particle and fiber reinforced composites. Journal of Applied Mechanics 58 1991, 388--395.
- Hashin, Z. Thermoelastic properties of particulate composites with imperfect interface. Journal of the Mechanics and Physics of Solids 39 1991, 745--762.
- Theocaris, P. S. The exact shear modulus of particulates based on the concept of mesophase. Colloid and Polymer Science 268(12) 1990, 1118--1130.
- Wang, W. and Jasiuk, I. Effective elastic constants of particulate composites with inhomogeneous interphases. Journal of Composite Materials 32(15) 1998, 1391--1424.
- Lombardo, N. The shear modulus of a particulate composite with inhomogeneous interphase. School of Mathematical and Geospatial Sciences, RMIT University, Research Report No. 2005/01, 2005.
- Eshelby, J. D. The determination of the elastic field of an ellipsoidal inclusion, and related problems. Proceedings of the Royal Society of London A 241, 1957, 376--396.