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Title: Application Of Elastic Perfectly Plastic Cyclic Analysis To Assessment Of Creep Strain

Conference ·
OSTI ID:1051435
 [1];  [2];  [3]
  1. Stress Engineering Services Inc.
  2. Consultant
  3. ORNL

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.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
Work for Others (WFO)
DOE Contract Number:
DE-AC05-00OR22725
OSTI ID:
1051435
Resource Relation:
Conference: ASME 2012 Pressure Vessels & Piping Division Conference, PVP 2012, Totonto, Canada, 20120715, 20120719
Country of Publication:
United States
Language:
English