Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. Colloques 48 (1987) C8-221-C8-225
DOI: 10.1051/jphyscol:1987830

ANELASTIC BEHAVIOUR OF MATERIALS UNDER MULTI-AXIAL STRAINS

R.E. BOLMARO¹ et F. POVOLO<sup>2, 3

1</sup>  Instituto de Física Rosario (CONICET-UNR), Facultad de Ciencias Exactas y Ingenieria, Departamento de Física, Universidad Nacional de Rosario, Av. Pellegrini 250, RA-2000 Rosario, Argentina
²  CEN de Grenoble, Département de Recherche Fondamentale, Service de Physique/MP., BP 85 X, F-38041 Grenoble Cedex, France
³  Comisión Nacional de Energia Atomica, Depto. de Materiales, Av. del Libertador 8250, RA-1429 Buenos Aires, Argentina, and Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Depto. de Física, Pabellón 1, Ciudad Universitaria, RA-1428 Buenos Aires, Argentina

Abstract
A theory of analasticity is presented, which involves the relaxation of all the elastic compliances as a function of orientation. It is shown that, in addition to the usual relaxations of Young's and shear moduli anelastic phenomena related to the relaxation of Poisson's ratio should be considered. Finality, the theory is applied to anelastic data in Zircaloy-4 and AISI-1080 steel obtained in longitudinal excitations.