MATEC Web of Conferences
Volume 53, 2016International Scientific Conference Week of Science in SPbPU – Civil Engineering (SPbWOSCE-2015)
|Number of page(s)||7|
|Section||Engineering and Technology|
|Published online||15 April 2016|
Effective methods of parameter identification for creep models with account of III stage
St.Petersburg State Polytechnical University, Polytechnicheskaya st.29, 195251, Saint-Petersburg, Russia
a Corresponding author: email@example.com
The account of tertiary (third) stage of creep is important for the failure analysis of structures. The correct description of third stage of creep is based on taking into account of damage accumulation process. An identification of the parameters of coupled creep-damage model leads to the optimization problem of finding the global minimum of a functional, having a complex, non-linear structure and a large number of local minimums. The Nelder–Mead method is applied to the solution to the multiparameter identification problem. The effectiveness and robustness of the applied approach are illustrated on examples of mechanical and civil engineering.
© Owned by the authors, published by EDP Sciences, 2016
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