Thermal Expansions of Heterogeneous Solids Containing Aligned Ellipsoidal Inclusions
1974; SAGE Publishing; Volume: 8; Issue: 4 Linguagem: Inglês
10.1177/002199837400800407
ISSN1530-793X
AutoresKenji Wakashima, Motoyuki Otsuka, Sokichi Umekawa,
Tópico(s)Innovations in Concrete and Construction Materials
ResumoA theoretical study has been made to predict overall thermal expansion characteristics of a two-phase material consisting of a matrix and aligned ellipsoidal inclusions. The calculation is based on Eshelby's theory on the transformation problem; an approximate method is Introduced to account for the effect of finite concentrations of the inclusions. The following two cases are treated: elastic matrix-elastic inclusions and elastoplastic matrix- elastic inclusions. The results are explicitly obtained when shapes of the inclusions are spherical, disc-shaped, and fiber-shaped. The calculated over all thermal expansion coefficient for the case of elastic matrix-elastic spheres agrees with Kerner's prediction.
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