Abstract
This dissertation begins with a review of the bases for creep constitutive equations. Next, physical metallurgical concepts are used to examine the creep process in simple and complex stress histories. Since, there are many alternatives to modeling an elastic-plastic-creep material the numerous theories available are reviewed and from this review three models: (classical creep theory, subelement theory and Schapery's single integral theory) are selected for further study. In three separate chapters the selected models are developed in detail; methods for implementing these theories in incremental finite element analysis are given; and procedures for determining the material parameters from experimental data are given for each theory. A numerical comparison of the three selected theories and experimental data are given for one and two dimensional problems. Finally, conclusions determined from this research and suggested improvements are given.
Sanders, Duane Ray (1986). A comparison of several creep constitutive theories for the prediction of elastic-plastic-creep response and their application to finite element analysis. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -16383.