Abstract
The present study is part of an identifying programme for constitutive parameters in damaged materials, termed the “effective parameters”. The programme starting point is that the experimental response depends not only on constitutive parameters, but also on structural mechanics and interaction with the test-machine. It is showed how the load-displacement diagram of compressed concrete cylinders is affected by crack propagation, through the resistant structure modification. Moreover, it is analytically demonstrated that the effective stress (σ eff )-effective strain (є eff ) curve exhibits a strictly positive derivative at the point corresponding to the average stress ()-average strain () curve peak. Finally, it is proposed a new identification procedure which provided satisfactory results, giving monotone strictly non-decreasing, size-effect insensitive and failure mechanism insensitive σ eff — є eff curves.
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© 2003 Springer-Verlag Wien
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Ferretti, E., Di Leo, A., Viola, E. (2003). A Novel Approach for the Identification of Material Elastic Constants. In: Davini, C., Viola, E. (eds) Problems in Structural Identification and Diagnostics: General Aspects and Applications. International Centre for Mechanical Sciences, vol 471. Springer, Vienna. https://doi.org/10.1007/978-3-7091-2536-6_9
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DOI: https://doi.org/10.1007/978-3-7091-2536-6_9
Publisher Name: Springer, Vienna
Print ISBN: 978-3-211-20492-4
Online ISBN: 978-3-7091-2536-6
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