Creep life predictions for structures subject to variable loading

Autor: Ainsworth, R.A., Goodall, I.W.
Zdroj: International Journal of Solids and Structures; January 1976, Vol. 12 Issue: 7 p501-515, 15p
Abstrakt: Previous work which established upper and lower bounds on the creep life of steadily loaded structures is extended to cater for load and temperature variations in non-homogeneous structures. The investigation is limited to the range where short term plasticity and fatigue damage can be ignored. For proportional loading, the upper bound which is based on limit analysis, is similar in form to that for constant loading. In the more general case, the upper bound is less stringent and is based on the mean load and temperature distribution over the lifetime. A lower bound on life is taken as the time for the first part of the structure to fail.
Databáze: Supplemental Index