Inelastic analysis with a generalized plane strain model

A recent trend in design of nuclear power components and other high-temperature components is ''design by analysis''; and the need for inelastic analysis is rising. Inelastic analysis, however, usually requires much manpower and computer time. A simplified model then often enables the efficient analysis; e.g. a generalized plane strain model. A method of elastic-plastic-creep analysis by finite element method is presented. Since constitutive equations are important in inelastic analysis, these are briefly reviewed. As an example, the results of elastic-creep analysis on a boiler furnace wall tube are given. (auth.)