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Geotechnical tests are performed by controlling applied forces or displacements, or even a combination of them. The question arises whether or not any load programme could be followed before reaching the limit state. It is shown that, if the system stiffness matrix is not symmetric (non-associated flow rule), full controllability of the loading programme can be lost before reaching the limit state (ordinary failure locus). Examples of the occurrence of homogeneous and non-homogeneous bifurcations on element tests are given.
Geotechnical tests are performed by controlling applied forces or displacements, or even a combination of them. The question arises whether or not any load programme could be followed before reaching the limit state. It is shown that, if the system stiffness matrix is not symmetric (non-associated flow rule), full controllability of the loading programme can be lost before reaching the limit state (ordinary failure locus). Examples of the occurrence of homogeneous and non-homogeneous bifurcations on element tests are given.
Controllability of geotechnical testing
Nova, Roberto (author)
Revue Française de Génie Civil ; 8 ; 613-634
2004-08-01
22 pages
Article (Journal)
Electronic Resource
Unknown
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