Assessment of the defect stability for large structures submitted to thermal shock loading through the G(f)(r) criterion

摘要

This paper proposes a formulation and a numerical protocol to allow the application of the G(fr) criterion for thick stainless steel components submitted to thermal shock loading. In a first part of the paper, a short description of the criterion initially defined in the S. Marie's PhD is proposed. The proposition to extend the criterion to thermal loading is then made based on the elastic-plastic stresses determined on the crack free model and the classical influence function formulation.