Publication Type
Conference Paper
Publication Date
Conference Name
ASME 2012 Pressure Vessels & Piping Division Conference, PVP 2012
Conference Location
Totonto, Canada
Conference Date
-
Abstract
A cyclic elastic-perfectly plastic analysis method is proposed which provides a conservative estimate to cyclic creep strain accumulation within the ratchet boundary. The method is to check for ratcheting based on an elastic-perfectly material with a temperature-dependent pseudo yield stress defined by temperature, time and stress to give 1% creep strain. It does not require stress classification and is also applicable to a full range of temperature above and below the creep regime. This simplified method could be used as a rapid screening calculation, with full time-dependent creep analysis used if necessary.