A new static identification approach based on the minimum constitutive relation error (CRE) principle for beam structures is introduced. The exact stiffness and the exact bending moment are shown to make the CRE minimal for given displacements to beam damages. A two-step substitution algorithm - a force-method step for the bending moment and a constitutive-relation step for the stiffness - is developed and its convergence is rigorously derived. Identifiability is further discussed and the stiffness in the undeformed region is found to be unidentifiable. An extra set of static measurements is complemented to remedy the drawback. Convergence and robustness are finally verified through numerical examples.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 2017 Jun 2|
|Event||12th International Conference on Damage Assessment of Structures, DAMAS 2017 - Kitakyushu, Japan|
Duration: 2017 Jul 10 → 2017 Jul 12
ASJC Scopus subject areas
- Physics and Astronomy(all)