The Incremental Strain Growth of Elastic-Plastic Bodies Subjected to High Levels of Cyclic Thermal Loading

Author:

Ponter A. R. S.1,Cocks A. C. F.1

Affiliation:

1. Department of Engineering, Leicester University, Leicester, LE1 7 RH, England

Abstract

A linearized method of analysis proposed in an accompanying paper [1] is used to obtain the ratchet rate for two types of thermal loading problems where parts of the structure experience reversed plastic straining. For structures that can shakedown plasticially it is found that for a given increment of load beyond the plastic shakedown boundary, the rate of ratchet increases with increasing level of thermal loading. When a structure is unable to shakedown plastically it ratchets at low mechanical loading as the result of a localized mechanism that involves some reversed plasticity. It is shown that the ratchet rate in such situations can be substantial but its value is very dependent on the local curvature of the yield and not the accuracy of the yield surface itself.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Cited by 11 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Direct Methods: History, Present and Future;Direct Methods for Limit State of Materials and Structures;2023

2. The Anderson-Bishop Problem—Thermal Ratchetting of a Polycrystalline Metals;Direct Methods for Limit States in Structures and Materials;2014

3. Thermal ratchetting of polycrystalline metals with inhomogeneous thermal properties;Philosophical Magazine;2013-08

4. Elastic Shakedown and Adaptation of the Response in Laterally Impacted Steel Tubes;International Journal of Damage Mechanics;2010-03-09

5. On the behaviour of a particulate metal matrix composite subjected to cyclic temperature and constant stress;Computational Materials Science;2005-12

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