Journal Published Online: 04 October 2010
Volume 7, Issue 10

The Influence of Elastic Follow-Up on the Integrity of Structures

CODEN: JAIOAD

Abstract

Based on the traditional definitions associated with creep strain accumulation in defect free components, a generalised definition for “elastic follow-up” factor, Z , is proposed that characterises the influence of a “nonlinear” event experienced locally within a structure, i.e., creep, plasticity, cracking, growth of an existing crack, or any combination of such events, on the response of the structure to the applied loading. A “crack affected zone” approach is then outlined for evaluation of this parameter in a defective component. The significance of quantifying elastic follow-up in relation to integrity assessment procedures and the challenges facing its practical implication to the codes is discussed. The approach is finally examined through its application to two example problems; a standard test geometry, centre cracked plate and an external circumferential cracked thick cylinder, i.e., a conventional structural component.

Author Information

Hadidi-Moud, S.
Mechanical Engineering Dept., Ferdowsi Univ. of Mashhad, Univ. Campus, Mashhad, Iran
Smith, D.
Mechanical Engineering Dept., Queen's Building, Univ. of Bristol, United Kingdom
Pages: 12
Price: $25.00
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Details
Stock #: JAI102703
ISSN: 1546-962X
DOI: 10.1520/JAI102703