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A Novel Approach for the Identification of Material Elastic Constants

  • Elena Ferretti
  • Antonio Di Leo
  • Erasmo Viola
Part of the International Centre for Mechanical Sciences book series (CISM, volume 471)

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.

Keywords

Effective Stress Effective Strain Concrete Cylinder Resistant Area Dominant Crack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Wien 2003

Authors and Affiliations

  • Elena Ferretti
    • 1
  • Antonio Di Leo
    • 1
  • Erasmo Viola
    • 1
  1. 1.DISTART — Department of Structures Transportations Waters Survey and Territory EngineeringUniversity of BolognaBolognaItaly

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