Inelastic constitutive equations: deformation induced anisotropy and the behaviorat high homologous temperature. Final report January 1, 1996 through June 30, 1999

摘要

Demand for predictability of performance of energy producing machinery is everincreasing. Modern industrial society demands the safe and reliable operations of these plants. Due to their size and their life expectancy the safety and reliability of steam, gas turbines and other heavy machinery operating at high temperatures cannot be determined by simulated service testing. An engineering stress and lifetime analysis has to be performed long before the actual structure is built. For this purpose a mathematical description of the actual material deformation behavior, the constitutive equation, is needed.