A two-dimensional elasto-plastic finite element analysis is developed herein which has the capability of analyzing structural members which are subjected to cyclic thermal-mechanical loadings. This analysis, therefore, is of great value in gas turbine applications. The analysis, which is based on an effective stress-strain formulation, employs a tangent modulus approach in its execution. Both principal and conventional stresses are computed in the body. Unloading procedures are established and subsequently employed in cyclic loading problems. Several examples are presented. A turbine blade shroud, which has been mechanically loaded due to interference with its adjacent member, is analyzed. Cyclic behavior is shown for a uniaxial tension specimen and then generalized to a multiaxial stress state. A “predictor-corrector” procedure, which calculates the most efficient loading increment, is developed. Analyses of stress concentration factors and thermal stress applications are also presented.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.