Finite Element Modeling: With Applications to HTGR Graphite Core Structural Integrity Analysis and Environmental Fatigue Modeling of LWR Piping
Finite element analysis (FEA) techniques are increasingly becoming sophisticated and can be used for structural integrity prediction of reactor components subjected to complex multi-physics environment, and under material and geometrical nonlinearity. In this seminar the use of commercially available ABAQUS finite element code for reactor structural integrity analysis will be discussed.
The first part of the talk will cover the multi-physics stress analysis of High Temperature Gas Cooled Reactor (HTGR) reflector and fuel bricks. The second part of the talk will give an overview of the ongoing experimental and modeling activities in the Light Water Reactor Sustainability (LWRs) program. Representative results from the Extended Finite Element Method (XFEM) based dynamic crack propagation modeling of steam generator tubes will be presented. Also, the use of FEA for estimating residual stresses in manufacturing processes will be discussed. The third part of the talk will briefly discuss the development of a new facility for monitoring and predicting structural integrity of components based on embedded sensing technology.